US Pat. No. 9,284,422

METHOD OF PREPARING A TRANSPARENT POLUMER MATERIAL COMPRISING A THERMOPLASTIC POLYCARBONATE AND MINERAL NANOPARTICLES

RENAULT S.A.S. SOLVAY SA,...

1. A method of preparing a transparent polymer material, the method comprising the following steps:
i) mixing mineral nanoparticles selected from the group consisting of nanoparticles of alkaline-earth metal carbonates and
alkaline-earth metal sulfates and a composition A including at least one thermoplastic polymer in the molten state selected
from the group consisting of polycarbonate (PC), polystyrene (PS) and polymethyl methacrylate (PMMA) in order to obtain a
master-batch, the mixture of step i) including at least 25% and at most 75% by weight of said mineral nanoparticles; and

ii) mixing the master-batch obtained in step i) with a composition B comprising a transparent thermoplastic polycarbonate
matrix (PCm) in the molten state, to obtain the transparent polymer material including at most 10% by weight of said mineral
nanoparticles, wherein said addition of said master batch including said nanoparticles is added in an amount, concentration
and manner to said transparent thermoplastic polycarbonate matrix (PCm) such that it results in said transparent thermoplastic
polycarbonate matrix having no more than a 25% reduction in light transmission percentage relative to a reference material
of a transparent thermoplastic polycarbonate matrix (PCm) having no master batch included, such that there is no significant
loss of contrast to an object viewed therethrough

wherein said polymer material has a light transmission loss at 650 nm, compared with a reference material obtained solely
from the thermoplastic polycarbonate matrix (PCm), of at most 25%, and

wherein said polymer material has a molecular weight loss, compared with a reference material obtained solely from the transparent
thermoplastic polycarbonate matrix (PCm), of at most 30%.

US Pat. No. 9,163,125

METHOD OF PREPARING A TRANSPARENT POLYMER MATERIAL COMPRISING A THERMOPLASTIC POLYCARBONATE AND SURFACE-MODIFIED MINERAL NANOPARTICLES

ARMINES, Paris (FR) SOLV...

1. A method of preparing a transparent polymer material, the method comprising the following steps:
i) obtaining composite nanoparticles comprising mineral nanoparticles at least partially coated with at least one monomer,
wherein the monomer is selected from the group consisting of styrene, methyl methacrylate, butyl acrylate, bisphenol A, phosgene,
diphenyl carbonate, acrylamide, and combinations thereof

at least one polymer, wherein the polymer either one of selected from the group consisting of polystyrene, polycarbonate,
polymethyl methacrylate, polybutyl acrylate, polyacrylamide, and combinations thereof, or

a copolymer of the group consisting of styrene, polycarbonate monomer, methyl methacrylate, butyl acrylate, bisphenol A, acrylamide,
and combinations thereof

and combinations thereof, suitable for promoting physicochemical interactions at the interface between the mineral nanoparticles
and a thermoplastic polycarbonate matrix, said mineral nanoparticles being surface-modified by said monomer, said polymer,
and combinations thereof:

directly by grafting or directly by adsorption of the monomer, the polymer, and combinations thereof, onto the surface of
said mineral nanoparticles

wherein said mineral nanoparticles being surface-modified by said monomer, said polymer, and combinations thereof, directly
by creating a hydrogen bond or creating Van der Waals bond, between the mineral nanoparticles from one hand, and the monomer,
the polymer, and combinations thereof, from the other hand; and

ii) mixing the composite nanoparticles obtained in step i) with the thermoplastic polycarbonate matrix in a molten state to
obtain said transparent polymer material, said transparent polymer material including at most 10% by weight of said composite
nanoparticles, wherein said transparent polymer material is a material through which an image is observed with no loss contrast.

US Pat. No. 9,282,886

DEVICE FOR DETERMINING A GROUP OF VISION AIDS SUITABLE FOR A PERSON

1. A device for determining a group of at least one vision aid apparatus suitable for the vision of an individual, comprising:
computing means with a memory, and in the memory, a pre-established list of vision aid apparatuses, programmed to:
a) determine at least one characteristic of the vision of said individual,
b) determine at least one use of the group of at least one vision aid apparatus, desired by the individual,
c) determine said group of at least one vision aid apparatus as a function of the characteristic of the vision and of the
use desired by the individual,

said step c) comprising preselecting, in a course of a step c1), from among said pre-established list, a set of vision aid
apparatuses suitable for aiding the individual as a function of at least one characteristic of the individual's vision determined
in said step a).

US Pat. No. 9,274,253

PROCESS OF DRILLING ORGANIC GLASSES

1. A process of drilling organic glasses, comprising the following steps:
providing an organic glass substrate;
providing onto at least one surface of said organic glass substrate a polymer film having:
an elastic modulus of equal to or less than 3 GPa in at least one direction, and
a E*h2 equal to or more than 3.5 N in at least one direction, wherein E and h are respectively the elastic modulus and a thickness
of the polymer film; and

drilling a hole through the organic glass substrate and the polymer film by means of a drill.

US Pat. No. 9,221,145

DEVICE FOR BLOCKING AN OPHTHALMIC LENS

1. A blocking device (1) comprising:
a structure (10);

a manipulation arm (30) mounted on the structure (10) to be movable between two extreme positions and including gripper means (33) for gripping a blocking accessory for placing on an ophthalmic lens;

guide means (50) for guiding the manipulation arm (30) between the two extreme positions along a path that presents a curved portion and an adjacent rectilinear portion; and

drive means (70) for changing the position of the manipulation arm (30) and comprising a wheel (73) engaging a drive surface (40),

wherein the drive surface (40) forms part of the manipulation arm (30) and presents a circularly arcuate portion (41) enabling the wheel (73) to drive the manipulation arm (30) along the curved portion of the path and a rectilinear portion (42) enabling the wheel (73) to drive the manipulation arm (30) along the rectilinear portion of the path.

US Pat. No. 9,250,360

METHOD FOR PRODUCING ZIRCONIA COLLOIDS

SHANGHAI UNIVERSITY, Sha...

1. A method for producing a colloidal suspension of zirconia particles, comprising the following successive steps:
a) subjecting a mixture of zirconium oxychloride (ZrOCl2) and an alkali metal halide in an aqueous solvent to hydrothermal treatment at a temperature above 150° C.,

b) separating a slurry obtained from a supernatant in step (a), and
c) peptizing said slurry by adding a strong acid thereto, and
d) desalting said slurry, so as to form the colloidal suspension of zirconia particles.

US Pat. No. 9,254,615

METHOD AND AN APPARATUS FOR MANUFACTURING AN OPTICAL LENS

1. A method of manufacturing an optical lens, the method comprising the steps of:
removably mounting a lens member at a first position on a single blocking surface, the lens member having a surface to be
manufactured and an opposing surface to the surface to be manufactured, the opposing surface being in contact with the blocking
surface;

determining the first position of the lens member with respect to the blocking surface while the lens member is on the blocking
surface, wherein geometry of the opposing surface and a geometrical configuration of the blocking surface are used to determine
positioning of the lens member with respect to the blocking surface;

comparing the first position of the lens member with a predetermined position in order to determine a positioning error between
the first position and the predetermined position;

determining a surface position of the surface to be manufactured with respect to the blocking surface according to the positioning
error;

determining operational parameters of a lens manufacturing tool according to the determined surface position and configuring
the lens manufacturing tool with the operational parameters for manufacturing the surface to be manufactured such that desired
optical properties of the optical lens are obtained; and

using the configured lens manufacturing tool on the lens member mounted on the blocking surface at the first position to manufacture
the optical lens therefrom.

US Pat. No. 9,242,418

OPHTHALMIC LENS CONTAINING A FRESNEL SURFACE AND METHOD FOR MANUFACTURING SAME

Essilor International, C...

1. A process to manufacture an ophthalmic lens containing a Fresnel surface inside the ophthalmic lens, the process comprising
the steps of:
injection molding by injecting a first thermoplastic material in a mold comprising a microstructured mold insert to provide
a first microstructured form having a Fresnel surface,

the microstructured mold insert having a heat conductivity that is lower than the heat conductivity of the first thermoplastic
material to delay heat dissipation of the first thermoplastic material and allow the first thermoplastic material to flow
therethrough,

a temperature of the microstructured mold insert being lower than the first thermoplastic material's glass transition temperature
upon injecting the first thermoplastic material in the mold,

the microstructured mold insert being demoldable from the first microstructured form; and
overmolding a second thermoplastic material onto the Fresnel surface of the first microstructured form to provide the ophthalmic
lens, the second thermoplastic material being different from the first thermoplastic material.

US Pat. No. 9,188,703

CURABLE COATING COMPOSITIONS PROVIDING ANTISTATIC ABRASION RESISTANT COATED ARTICLES

1. An article having at least one surface comprising an antistatic coating obtained by depositing on a substrate and curing
a curable composition comprising:
a) at least one conductive polymer;
b) colloidal particles of at least one non-conductive oxide; and
c) at least one binder comprising at least one epoxysilane having at least two hydrolyzable groups directly linked to a Si
atom of the epoxysilane, and/or its hydrolysis product,
wherein the at least one conductive polymer and the colloidal particles of at least one non-conductive oxide are substantially
not agglomerated,
wherein content of the at least one conductive polymer in a dry extract of the curable composition is from 0.1 to 10% by weight,
and content of a dry extract of the at least one epoxysilane in the dry extract of the curable composition is from 20 to 80%
by weight based on total weight of the dry extract, and

wherein the at least one conductive polymer of the curable composition is in the form of particles in a size ranging from
2 to 150 nm.

US Pat. No. 9,174,321

LENS BLOCKING AND DEBLOCKING METHOD AND RELATED DEVICE

1. A method of deblocking a lens component fixed on a thermoplastic block of an ophthalmic lens block comprising the steps
of:
(a) applying a pushing strain on the surface of the lens component fixed on the thermoplastic block;
(b) providing a warm gas flow at the interface between the lens component and the thermoplastic block; and
maintaining the pushing strain during the step of providing the warm gas flow at the interface between the lens component
and the thermoplastic block, wherein the stress applied to obtain the pushing strain of step (a) is greater than or equal
to 0.1 MPa and less than or equal to 1 MPa and wherein the temperature of the warm gas flow of step (b) is greater than or
equal to 30° C. and less than or equal to 70° C.;

wherein the pushing strain is perpendicular to the interface and the warm gas flow propagates parallel to the interface.

US Pat. No. 9,114,419

METHOD FOR HOLDING A LENS FOR DIP TREATMENT THEREOF

1. A method for dip treatment of an optical element, comprising:
dipping said optical element,
said optical element having a peripheral edge defined by an edge surface located between a front face and a rear face,
the peripheral edge surface defining, in a first plane located completely between said front and rear faces, an arcuate exterior
circumferential perimeter of said optical element,

wherein while said optical element is being dipped, holding said arcuate exterior circumferential perimeter of said optical
element by a holding ring,

the holding ring comprising a hoop for draining and encircling a peripheral edge of the optical element, said hoop forming
an arc over more than 180° and being provided at each of two ends with an outwardly-directed drip tab pointing away from the
held optical element, said hoop further comprising a front edge and a rear edge with an inside circumferential face therebetween,
the inside face having an inner arcuate circumferential surface that extends from a first of said drip tab to a second of
said drip tab, the inner arcuate circumferential surface defining, in a second plane located completely between said front
and rear edges, an opening via which the ring is clipped around the optical element by embracing the peripheral edge of said
optical element by more than 180° of the inner arcuate circumferential surface of the holding ring forming a single continuous
circumferential contact region along more than 180° of said arcuate exterior circumferential perimeter of said optical element,
the inner arcuate circumferential surface thereby exerting continuous linear contact with said peripheral edge over the contact
region of more than 180° of said arcuate exterior circumferential perimeter of said optical element.

US Pat. No. 9,327,460

OPTICAL ELEMENT COMPRISING A CRACK-FREE AEROGEL

1. A process for manufacturing a transparent optical element comprising:
a) providing an optical element having a surface with at least one open cell;
b) carrying out a surface treatment of said cell, the surface treatment increasing the wettability of the surface;
c) preparing a solution comprising:
an organic-aqueous solvent;
at least one organic polymer, soluble in said solvent, having a weight-average molecular weight greater than 10,000 g/mol;
at least one alkoxysilane selected from the group consisting of (C1 to C3 alkyl)tri(C1 to C3 alkoxy)silanes and tetra(C1 to C3 alkoxy)silanes and mixtures thereof;

d) adding an acid or base hydrolysis catalyst to the solution so as to obtain a sol;
e) depositing the sol in the pretreated cell before the gel point of the sol is achieved and sealing the filled cell using
a film;

f) leaving the optical element to stand in an alcoholic atmosphere for between 15 minutes and 5 hours in order to mature the
gel;

g) removing the film sealing the cell in an alcoholic medium;
h) carrying out, in an autoclave, supercritical drying of the gel contained in the cell so as to obtain an aerogel.

US Pat. No. 9,291,522

PROCESS FOR DETERMINING POSITION PARAMETERS OF A MANUFACTURED SURFACE RELATIVE TO A REFERENCE SURFACE

ESSILOR INTERNATIONAL, C...

1. A process implemented by computer means for determining at least six position parameters defining the relative position
of a manufactured derivable surface relative to a reference surface, wherein the manufactured derivable surface is a surface
to be manufactured of an ophthalmic lens, and for determining at least one deformation parameter of a deformation surface
of the ophthalmic lens, the process comprising:
a nominal surface providing step during which a nominal surface expressed in a nominal frame of reference and corresponding
to the theoretical derivable surface to be manufactured with the nominal value of the position parameters defining the relative
position of the nominal surface relative to the reference surface is provided;

a measured surface providing step during which a measured surface of the manufactured derivable surface expressed in the nominal
frame of reference is provided;

a deformation surface providing step during which at least one deformation surface defined by at least one deformation adjustable
parameter is provided;

a composed surface determining step during which a composed surface is determined by adding the measured surface and the deformation
surface;

a parameters determining step during which the position parameters and the at least one deformation parameter are determined
by minimizing the difference between the nominal surface and the composed surface,

an error surface determining step during which the error surface corresponding to the difference between the measured surface
positioned relative to the reference surface by using the at least six position parameters and the nominal surface is determined;
and

a controlling step during which the error surface is controlled.
US Pat. No. 9,278,885

METHOD FOR PREPARING A GLASS CONVENIENT FOR TRIMMING, A GLASS THUS OBTAINED, AND METHOD FOR TRIMMING SUCH A GLASS

1. A method for improving adhesion between ophthalmic glass comprising a hydrophobic and/or oil-repellent substrate coating
and an adhesive holding pad associated with a glass trimming device, said method comprising:
applying a temporary layer on the hydrophobic and/or oil-repellent substrate coating, the temporary layer imparting to the
ophthalmic glass a surface energy of at least 15 mJ/m2.

US Pat. No. 9,110,223

METHOD FOR TREATING THE SURFACE OF A SUBSTRATE BASED ON SULPHUR POLYMER, INTENDED TO BE COVERED WITH A COATING

1. A method for coating at least one surface of a substrate comprising a sulphur polymer, comprising, prior to depositing
the coating onto the surface of the substrate, a treating step of said surface using a treating composition comprising at
least one reducing agent which is able to reduce C—S, S—S, CON bonds and salts in the sulphur polymer forming the substrate,
causing the sulphur polymer to functionalize through the creation of SH bonds near the surface by contact with the reducing
agent,
wherein the treating step comprises at least the steps of:
dipping the substrate into at least a bath comprising the treating composition, and
rinsing off the substrate by dipping it into a deionized water bath.

US Pat. No. 9,099,278

PROTECTIVE ENCLOSURE FOR AN ION GUN, DEVICE FOR DEPOSITING MATERIALS THROUGH VACUUM EVAPORATION COMPRISING SUCH A PROTECTIVE ENCLOSURE AND METHOD FOR DEPOSITING MATERIALS

1. A device for depositing materials through vacuum evaporation comprising:
a treating chamber having a substrate holder;
an ion gun having an outlet configured to direct an ion beam towards the substrate holder;
a protective enclosure for the ion gun comprising:
at least one curved side wall surrounding the ion gun;
an open upper end defining an opening; and
a longitudinal axis;
where the side wall forms a truncated tube such that:
the opening of the open upper end of the protective enclosure defines an incline relative to the longitudinal axis; and
the open upper end has an upper section and a lower section such that at least a portion of the opening is disposed at a non-perpendicular
angle relative to the longitudinal axis; and

an innermost surface of the side wall is parallel to the longitudinal axis.

US Pat. No. 9,090,032

LENS BLOCKING METHOD AND RELATED DEVICE

1. A method of blocking an unfinished optical lens to be machined, the unfinished optical lens comprising an unfinished face
and a second face, the method comprising:
an unfinished optical lens providing step in which the unfinished optical lens is provided;
a positioning step in which the unfinished optical lens is positioned in a first reference position by positioning the unfinished
face of the unfinished optical lens on the top of at least three pins;

a preformed optical substrate block providing step in which a preformed optical substrate block is provided; and
a docking step in which the second face of the unfinished optical lens in the first reference position is docked to the docking
surface of the preformed optical substrate block, wherein the docking step is performed without moving the unfinished optical
lens.

US Pat. No. 9,266,772

METHOD FOR MANUFACTURING A SUBSTRATE COATED WITH MESOPOROUS ANTISTATIC FILM, AND USE THEREOF IN OPHTHALMIC OPTICS

1. A method for manufacturing a substrate coated with a mesoporous antistatic film, comprising:
a) preparing a precursor sol of a mesoporous antistatic film comprising:
at least one inorganic precursor agent A selected from compounds of formula:
Si(X)4
 wherein the X groups independently are hydrolyzable groups or a hydrolyzate of such precursor agent;
at least one precursor agent B selected from organosilanes comprising:
a silicon atom carrying at least two hydrolyzable groups; and
at least one ammonium group;
or a hydrolyzate of such precursor agent;
at least one organic solvent, at least one pore-forming agent, and water;
the B compound / A compound molar ratio ranging from 0.1 to 0.8;
b) depositing the precursor sol to form a precursor sol film onto a main surface of the substrate;
c) consolidating the deposited film;
d) removing the pore-forming agent from the film resulting from the previous step; and
e) recovering a mesoporous antistatic film having a refractive index lower than or equal to 1.45;
the method further comprising:
(i) a step of treating the film after step b) or after step c), with at least one hydrophobic reactive compound carrying at
least one hydrophobic group; and/or

(ii) a step of introducing at least one hydrophobic precursor agent carrying at least one hydrophobic group into the precursor
sol before the step b) of depositing the precursor sol film.

US Pat. No. 9,133,348

ANTISTATIC SOL/GEL COMPOSITIONS AND OPTICAL ARTICLES COATED THEREWITH

1. An antistatic sol/gel forming coating composition comprising:
(a) a hydrolyzate resulting from at least partial hydrolysis of a component A consisting of one or more compounds containing
at least one polyalkylene oxide segment and at least two —Si(X)n hydrolyzable groups in which n is an integer ranging from 1 to 3, and the X groups independently are precursors of OH groups;

(b) optionally, at least one component B consisting of:
one or more compounds of formula:
Rn?Si(Z)4-n?  (I)

or a hydrolyzate thereof, in which the R groups independently are monovalent alkyl groups, the Z groups independently are
hydrolyzable groups or hydrogen atoms, and n? is an integer equal to 0, 1 or 2, such that the Z groups do not all represent
a hydrogen atom when n?=0; with or without one or more compounds of the formula:

R1n1Ym1Si(Z1)4-n1-m1  (II)

or a hydrolyzate thereof, in which the R1 groups independently are monovalent organic groups linked to the silicon atom through
a carbon atom, the Y groups independently are monovalent organic groups linked to the silicon atom and containing at least
one epoxy function, the Z1 groups independently are hydrolyzable groups or hydrogen atoms and m1 and n1 are integers such
that m1 is equal to 1 or 2 and n1+m1=1 or 2; and

(c) at least one inorganic metal salt;
wherein component A and optional component B generate a cross-linked structure upon polymerization of the composition, the
dry extract of the composition containing less than 5% by weight free polyalkylene oxide polymers.

US Pat. No. 9,046,633

TRANSPARENT OPTICAL ELEMENT HAVING A PLURALITY OF LAYERS CONSISTING OF CELLULAR TILING

1. A transparent optical element, comprising:
a plurality of layers superposed along an optical axis of the element,
each layer extending perpendicularly to the optical axis formed from a tiling of contiguous cells, with a distribution function
of an optical phase shift in each layer having a constant value inside each cell of said layer,

neighboring cells in each layer being separated by a wall that extends perpendicularly to said layer,
a refractive function of the element resulting from a combination of the respective optical phase shift distribution functions
of the layers, the optical phase shift being obtained by at least one of a variation in thickness or by variations in refractive
index of transparent materials contained in the cells,

wherein the tilings of at least two of the layers do not coincide in a projection of said layers onto a surface perpendicular
to the optical axis, so that the boundaries between some of the contiguous cells of one of the two layers cut some cells of
the other of the two layers in said projection, and

the element is adapted to form an image of a scene from the light originating from said scene and passing through said element.

US Pat. No. 9,389,435

OPHTHALMIC LENS

1. An ophthalmic lens having a front main face and a back main face, at least one of both main faces comprising a filter,
which provides the main face comprising said filter with the following properties:
an average blue reflectance factor (Rm,B) within a wavelength range of from 420 nanometers to 450 nanometers, which is higher than or equal to 5%, for an angle of
incidence ranging from 0° to 15°,

a spectral reflectivity curve for an angle of incidence ranging from 0° to 15°, this reflectivity curve having:
a maximum reflectivity at a wavelength of less than 435 nanometers, and
a full width at half maximum (FWHM) higher than or equal to 80 nanometers, and
for an angle of incidence ? ranging from 0° to 15° and for an angle of incidence ?? ranging from 30° to 45°, a parameter ?(?,??)
defined by the relation ?(?,??)=1?[R??(435 nm)/R?(435 nm)], in such a way that this parameter ?(?,??) is higher than or equal to 0.6, where

R?(435 nm) represents the reflectivity value of the main face comprising said filter at a 435 nanometer-wavelength for the angle
of incidence ?, and

R??(435 nm) represents the reflectivity value of the main face comprising said filter at a 435 nanometer-wavelength for the angle
of incidence ??.

US Pat. No. 9,315,693

GLYOXAL ADHESIVE SYSTEM AND PROCESS FOR MANUFACTURING SAME

1. An optical adhesive product for improved wet adhesion in a laminated ophthalmic lens consisting essentially of:
a glyoxal-water solution containing greater than 5% and up to about 50% by weight glyoxal,
less than 1% by weight of a pH adjusting compound to adjust pH of the glyoxal-water solution to below 7, and
water,
wherein the optical adhesive product formed therefrom is an adhesive for the laminated ophthalmic lens, and the adhesive demonstrating
a wet peel force strength above about 6 Newtons.

US Pat. No. 9,291,747

OPTICAL ARTICLE COMPRISING AN ANTI-REFLECTING COATING HAVING ANTI-FOGGING PROPERTIES

1. An optical article having anti-fogging properties, comprising a substrate comprising a front face and a rear face, at least
one of these two faces is coated with an anti-reflecting stack of layers of low refractive index (LI) having a refractive
index of 1.55 or less and high refractive index (HI) having a refractive index higher than 1.55, said anti-reflecting stack
of layers including an outermost layer which is the farthest from the substrate and an innermost layer which is the closest
from the substrate, both of said outermost and innermost layer have low refractive index and being made from SiO2, SiOx with 1?x<2, a mixture of SiO2 and SiOx, a mixture of SiO2 with 10% by weight or less, based on the total weight of the mixture, of Al2O3, and a mixture of SiOx with 10% by weight or less, based on the total weight of the mixture, of Al2O3, or a mixture of SiO2 with SiOx and with 10% by weight or less, based on the total weight of the mixture, of Al2O3, wherein the outermost layer of the anti-reflecting stack is a sandwich layer comprising a core portion interleaved between
two side portions, the core portion having a physical thickness ranging from 20 to 150 nm and the side portions having a physical
thickness of 1 to 50 nm, the core portion having further a lower density than the one of the side portions, and wherein said
innermost layer has a physical thickness ranging from 50 to 500 nm, and a lower density than the one of the side portions.
US Pat. No. 9,075,189

METHOD FOR OBTAINING OPTICAL ARTICLES HAVING SUPERIOR ABRASION RESISTANT PROPERTIES, AND COATED ARTICLES PREPARED ACCORDING TO SUCH METHOD

1. A method for preparing an abrasion resistant optical article comprising:
a) providing an optical article having at least one main face bearing an abrasion resistant coating;
b) positioning said optical article in a vacuum deposition chamber;
c) depositing a first inorganic layer comprising SiO2 onto and in direct contact with said abrasion resistant coating by vacuum evaporation of SiO2 and/or SiOx, with 1?x<2, in said vacuum chamber, the thickness of said first inorganic layer ranging from 10 to 100 nm, wherein oxygen
is introduced inside said vacuum chamber during said evaporation; said deposition being conducted without ion assistance;

d) depositing a second inorganic layer comprising SiO2 onto and in direct contact with said first inorganic layer by vacuum evaporation of SiO2 and/or SiOx, with 1?x<2, in said vacuum chamber, the thickness of said second inorganic layer ranging from 70 to 300 nm, wherein said
deposition is conducted without ion assistance and the pressure in said vacuum chamber during the deposition of said second
inorganic layer being lower than the pressure during evaporation of said first inorganic layer and optionally

e) applying onto and in direct contact with said second inorganic layer a hydrophilic or an antifouling hydrophobic layer,
preferably having a thickness ranging from 1 to 15 nm;

wherein the outermost layer of the article is said second inorganic layer, or, when present, said hydrophilic or hydrophobic
layer.

US Pat. No. 9,802,174

METHOD FOR PRODUCING ZIRCONIA COLLOIDS

SHANGHAI UNIVERSITY, Sha...

1. A method for producing a colloidal suspension of zirconia particles, comprising the following successive steps:
(a) subjecting a mixture of zirconium oxychloride and an alkali metal halide AX in an aqueous solvent to hydrothermal treatment
at a temperature above 150° C., so as to obtain a suspension in the form of a two-phase mixture comprising a slurry and a
supernatant, and

(b) desalting said suspension, without first peptizing said suspension, so as to form a colloidal suspension of zirconia.
US Pat. No. 9,523,004

SURFACE TREATMENT COMPOSITION, PROCESS FOR PRODUCING THE SAME, AND SURFACE-TREATED ARTICLE

ESSILOR INTERNATIONAL, C...

1. A surface treatment composition comprising an organosilicon compound represented by the general formula (A):
F—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o—(CH2)p—X—(CH2)r—C3H6—Si(X?)3-a(R1)a  (A)

wherein q is an integer from 1 to 3; m, n, and o are independently integers from 0 to 200; p is 1 or 2; X is oxygen or a bivalent
organic group; r is an integer from 0 to 17; R1 is a C1-22 linear or branched hydrocarbon group that does not have an unsaturated aliphatic bond; a is an integer from 0 to 2; and X?
is hydrolysable group,

wherein a total content of fluorine-containing compounds represented by the general formulas (B) and (C) in the surface treatment
composition is less than 25 mol % based on the surface treatment composition, and wherein a content of the fluorine-containing
compound represented by general formula (C) is at least 0.1 mol % based upon the surface treatment composition:

F—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o—F  (B)

wherein q, m, n and o are the same as described above,
F—(CF2)q—(OC3F6)m—(OC2F4)n—(OCF2)o—(CH2)p—X—(CH2)r—CH?CHCH3  (C)

wherein q, m, n, o, p, r and X are the same as described above.
US Pat. No. 9,481,602

METHOD FOR PREPARING THE SURFACE OF A LENS INCLUDING AN ANTI-SOILING COATING FOR EDGING THE SAME

Essilor International, C...

1. A method for treating an optical lens, comprising the following steps:
providing an optical lens coated on at least one of the main surfaces thereof with a hydrophobic and/or oleophobic outer coating;
depositing a temporary coating of polymeric nature comprising one or more layers onto the main surface of the lens so as to
cover at least partially the hydrophobic and/or oleophobic coating, wherein a layer of the temporary coating is in direct
contact with said hydrophobic and/or oleophobic coating and is formed by depositing onto said main surface of the lens a liquid
coating composition, and then curing the liquid composition; and

wherein, prior to the step of depositing the temporary coating onto the main surface of the lens, at least part of the peripheral
area of the main surface coated with the hydrophobic and/or oleophobic coating is submitted to a treatment resulting in the
removal of the coating in at least part of this peripheral area, and/or to the modification of the coating that lowers the
hydrophobic character thereof, in at least part of this peripheral area, without affecting the hydrophobic and/or oleophobic
coating on the main surface outside said peripheral area.

US Pat. No. 9,411,170

PROCESS FOR DETERMINING A PAIR OF PROGRESSIVE OPHTHALMIC LENSES

1. A process for determining a pair of progressive ophthalmic lenses comprising the steps of;
determining a prescribed far vision mean power (PFV) for each lens of the pair;

determining a prescribed addition (A) for each lens of the pair;
determining a reading direction for a wearer of the lenses;
defining a temporal side and a nasal side on each lens of the pair;
defining, on each lens being worn and for each gaze direction, a refractive power (P?,?) and a module of resulting astigmatism (Asr?,?), each gaze direction corresponding to a lowering angle (?) and to an azimuth angle (?);

defining a proximate vision gaze direction (?PV,?PV) for each lens of the pair;

defining, for each lens of the pair, a temporal half-width field of refractive power (TP_LE, TP_RE) as the angular distance, at constant lowering angle (?), between the proximate vision gaze direction (?PV, ?PV) and a gaze direction (?PV, ?TP) on the temporal side of the lens where the refractive power reaches the value of the prescribed far vision mean power plus
three quarters of the prescribed addition (PFV+¾*A);

defining, for each lens of the pair, a nasal half-width field of refractive power (NP_LE, NP_RE) as the angular distance, at constant lowering angle (?), between the proximate vision gaze direction (?PV, ?PV) and a gaze direction (?PV, ?NP) on the nasal side of the lens where the refractive power reaches the value of the prescribed far vision mean power plus
three quarters of the prescribed addition (PFV+¾*A);

defining, for each lens of the pair, a temporal half-width field of module of resulting astigmatism (TA_LE, TA_RE) as the angular distance, at constant lowering angle (?), between the proximate vision gaze direction (?PV, ?PV) and a gaze direction (?PV, ?TA) on the temporal side of the lens where the module of resulting astigmatism reaches the value of one quarter of the prescribed
addition (A/4);

defining, for each lens of the pair, a nasal half-width field of module of resulting astigmatism (NA_LE, NA_RE) as the angular distance, at constant lowering angle (?), between the proximate vision gaze direction (?PV, ?PV, ) and a gaze direction (?PV, ?NA) on the nasal side of the lens where the module of resulting astigmatism reaches the value of one quarter of the prescribed
addition (A/4);

wherein the ratio of the difference over the sum of temporal and nasal half-width fields of refractive power ((TP_LE?NP_LE)/(TP_LE+NP_LE), (TP_RE?NP_RE)/(TP_RE+NP_RE)) and/or the ratio of the difference over the sum of temporal and nasal half-width fields of module of resulting astigmatism
((TA_LE?NA_LE)/(TA_LE+NA_LE), (TA_RE?NA_RE)/(TA_RE+NA_RE)) are determined for each lens of the pair based on the reading direction determined for the wearer, and

wherein the ratio of the difference over the sum of temporal and nasal half-width fields of refractive power ((TP_LE?NP_LE)/(TP_LE+NP_LE), (TP_RE?NP_RE)/(TP_RE+NP_RE)) and/or the ratio of the difference over the sum of temporal and nasal half-width fields of module of resulting astigmatism
((TA_LE?NA_LE)/(TA_LE+NA_LE), (TA_RE?NA_RE)/(TA_RE+NA_RE)) are determined for each lens of the pair according to the following rules:

if the reading direction determined for the wearer is left-to-right, then the ratio of the difference over the sum of temporal
and nasal half-width fields of refractive power and/or resulting astigmatism is negative for the left eye lens, and positive
for the right eye lens; and

if the reading direction determined for the wearer is right-to-left, then the ratio of the difference over the sum of temporal
and nasal half-width fields of refractive power and/or resulting astigmatism is positive for the left eye lens, and negative
for the right eye lens.

US Pat. No. 9,120,277

PROCESS OF DRILLING ORGANIC GLASSES USING A THERMOPLASTIC FILM PROTECTING AGAINST CRACKING AND CRAZING

1. A process of drilling organic glasses, comprising the following steps:
(a) providing a substrate of organic glass,
(b) laminating onto at least one surface of said organic glass substrate via an adhesive layer selected from the group consisting
of pressure sensitive adhesives and hot melt adhesives, a thermoplastic polymer film having a thickness of at least 40 ?m
and an elastic modulus of at least 3 GPa, the peel strength of the thermoplastic polymer on the organic glass substrate being
higher than 1.3 N/25 mm, and

(c) drilling a hole through the substrate and polymer film by means of a drill.

US Pat. No. 9,104,025

DISPLAY FOR INCORPORATING IN A PAIR OF EYEGLASSES

1. A display comprising an optical imager for shaping light beams emitted by a light beam generator system, said beams being
introduced into said imager via an inlet face, and for directing the beams towards the eye of a wearer in order to enable
an image to be viewed, two hooks being in reference positions relative to the imager, and said light beam generator system
including a connection arrangement for connection to said hooks, the connection between said system and said hooks being releasable
and said hooks being designed to be received in housings carried by the connection arrangement, wherein said housings are
arranged in such a manner that said connection arrangement is assembled on said hooks by applying thrust against one of said
hooks, by turning about said hook, and by snap-fastening onto the other hook.

US Pat. No. 9,535,270

METHOD FOR MEASURING THE GEOMETRIC MORPHOMETRIC PARAMETERES OF A PERSON WEARING GLASSES

1. A method for measuring morpho-geometric parameters of an individual wearing spectacles, said method implementing an autonomous
computerized device having a screen, a target, a compact image acquisition system furnished with a means for determining the
inclination thereof, said system being linked to said screen, and a computer making it possible to control the image acquisition
system and to process the images obtained, said method comprising the steps of:
acquisition of an item of information relating to a first position of the frame worn by an individual, when he is looking
at a point situated in front of him at infinity, with a natural head carriage in a substantially horizontal direction, the
pair of spectacles occupying a natural position on the individual's face,

observation by the individual of the target placed in a known position with respect to the image acquisition system, while
performing at least one upward pitching movement of his head without taking his eyes off the target, the pair of spectacles
maintaining an unchanged position on the individual's face with respect to the first step,

acquisition by means of the same image acquisition system as that used for the first posture, of several images of the individual's
face during this rotation movement, each image corresponding to a particular degree of inclination of the head,

selection of the image closest to the ideal image for which the inclination of the face with respect to an axis linking the
eyes to the observed target is identical to the inclination of the face with respect to a horizontal direction adopted by
the individual when he is looking at a point at infinity,

Processing by the computer of the selected image so as to determine the morpho-geometric parameters of the individual, on
the basis of the position of the eyes, of the position of the frame in the first posture, of the position of the frame on
the selected image, and of the degree of inclination of the image acquisition system,

outputting of the result of the measurements.

US Pat. No. 9,477,099

TRANSPARENT OPTICAL ELEMENT WITH DUAL LIGHT-POLARIZING EFFECT

1. A set of paired eyeglasses comprising:
right and left eyeglasses suitable for being assembled in a spectacle frame, at least one of said right and left eyeglasses
being a finished or semi-finished ophthalmic eyeglass and forming a transparent optical element with dual light-polarizing
effect, the element having an optical surface and including:

at least first and second films each arranged in parallel with said optical surface,
the first film forming a linear light-polarizer in a first portion of the optical surface; and
the second film forming a retarder plate in a second portion of the optical surface; wherein:
within the optical surface, the second portion is smaller than the first portion and is contained within said first portion,
and a retarder efficiency of the second film is higher in the second portion with respect to the first portion out of said
second portion,

said element includes a base eyeglass,
at least one of the first film and the second film is present inside the base eyeglass, or the first and second films are
laminated on the base eyeglass,

the second film is situated before the first film at least in the second portion of the optical surface, along light rays
entering, through the eyeglass, into an eye of a wearer of the eyeglass,

the second film comprises, in the second portion of the optical surface, a film of a birefringent material with a slow axis
and a fast axis both parallel to the second film and perpendicular to each other,

the second film is oriented so that a polarization direction of light transmitted through the first film is angularly offset
with respect to each of the slow and fast axes by more than 5 degrees,

the first portion of the optical surface out of the second portion is devoid of retarder efficiency produced by the second
film, and

the retarder plate has no focus power.

US Pat. No. 9,454,019

PROGRESSIVE OPHTHALMIC LENS

1. A progressive ophthalmic lens comprising:
a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value, and a cylinder value,
the front surface of the lens comprising:
a far vision zone having a far vision reference point,
a near vision zone having a near vision reference point, and
a main meridian,
wherein the front surface is a regressive surface which is a continuous aspheric surface having a zone of decreasing mean
sphere value connecting the far vision zone and the near vision zone and has:

a sphere gradient normalized value of less than 7.50·10?1 mm?1 at any point in a central portion of the lens including a portion of the main meridian, the far vision reference point, and
the near vision reference point, and

a cylinder gradient normalized value of less than 1.45 mm?1 at any point in the central portion of the lens.

US Pat. No. 9,352,510

METHOD FOR ADJUSTING THE POSITION OF A TRANSPARENT ELEMENT

Essilor International, C...

1. A method for adjusting a position of a transparent element having two opposed faces laterally joined by a peripheral edge,
the element being transparent for a direction of propagation of light passing through the two opposed faces, the method comprising:
arranging at least one light source with light outputs distributed externally to and around the peripheral edge of the transparent
element, so that the entire peripheral edge of the transparent element is lit in a continuous manner by a portion of the light
produced by the light source, and the portion of the light being diffused by the entire peripheral edge of the transparent
element;

arranging an image formation system above one of the opposed faces of the transparent element, so as to form an image of the
entire peripheral edge of the transparent element by using the portion of the light diffused by the entire peripheral edge
of the transparent element, the peripheral edge of the transparent element being thus imaged entirely within each image formed,
separately from other images; and

moving the transparent element to adjust a difference between the imaged peripheral edge of the transparent element and reference
marks which indicate a reference position for the transparent element.

US Pat. No. 9,162,338

METHOD FOR CUTTING A PATCH TO BE APPLIED ONTO A CURVED SUBSTRATE

1. A method, comprising:
obtaining three-dimensional coordinates for a set of meshing points forming a mesh on a curved face of a substrate which is
bounded by a peripheral edge of said face,

determining a reference point in the substrate face, a reference axis which passes through the substrate face at said reference
point, a reference plane which is tangential to the substrate face at said reference point, and a series of sampling points
along the peripheral edge of said substrate face,

performing the following substeps for each sampling point of the peripheral edge:
determining a development plane which contains the reference axis and which passes through said sampling point of the peripheral
edge,

from the coordinates of the meshing points, calculating a curvilinear length between the reference point and said sampling
point of the peripheral edge, by following a curved segment at an intersection of the substrate face with the development
plane,

applying the curvilinear length, starting from the reference point, along a straight line at an intersection between the development
plane and the reference plane, to form a straight line segment issuing from said reference point and having the calculated
curvilinear length,

connecting ends of the straight line segments opposite the reference point, by an interpolated contour contained within the
reference plane, and

transferring the interpolated contour onto a planar film and cutting out a patch from the film based on said interpolated
contour.

US Pat. No. 9,146,406

ACTIVE SYSTEM OF VISION AND ASSOCIATED METHOD FOR IMPROVING VISUAL COMFORT TO A WEARER

1. An active system of vision for a wearer comprising:
a lens for ophthalmic spectacles having a peripheral edge, comprising:
a primary zone on a first face;
a secondary zone on the first face located between said primary zone and at least a portion of the peripheral edge of the
lens;

at least first and second regions forming a partition of the secondary zone, which are contiguous and alternate with a pitch,
the lens being adapted so that a spectacle eyeglass obtained from said lens produces a first ophthalmic correction in the
primary zone and in the first regions and produces a second ophthalmic correction in the second regions which is different
from said first ophthalmic correction;

a second face opposed to the first face separated by a refringent medium;
an occultation device comprising:
a selection device adapted for selecting the wearer's viewing state among a first vision viewing state and a second vision
viewing state;

an optical occultation system adapted to occult alternatively a first group and a second group according to the wearer's viewing
state selected by the selection device, the first group comprising at least the primary zone and the first regions, and the
second group comprising at least the second regions.

US Pat. No. 9,709,820

FRESNEL LENS AND OPTICAL DEVICE

Nikon Corporation, Tokyo...

1. A Fresnel lens for use in an optical system including an image plane,
the Fresnel lens being constructed as a refractive optical element with respect to visible light, and comprising:
a plurality of annular zone lens surfaces disposed concentrically; and
a plurality of side wall surfaces each formed between adjacent annular zone lens surfaces, the side wall surfaces generating
noise lights due to reflection and/or refraction of light incident at varying angles on the side wall surfaces,

wherein the side wall surfaces are modulated so as to spatially spread the noise lights in the image plane.
US Pat. No. 9,488,852

OPTICAL ARTICLE COMPRISING AN ANTIREFLECTIVE COATING WITH A LOW REFLECTION BOTH IN THE ULTRAVIOLET REGION AND IN THE VISIBLE REGION

1. An ophthalmic lens comprising a substrate with a front main face and a rear main face, the rear main face being coated
with a multilayered antireflective coating comprising a stack of at least one layer having a refractive index higher than
1.6 and of at least one layer having a refractive index lower than 1.5, wherein:
the mean reflection factor Rm-UV2 on the rear face between 300 nm and 320 nm is lower than 4%, for an angle of incidence of 15° and/or 30° and/or 45°;

the multilayered antireflective coating comprises at least 3 layers;
the multilayered antireflective coating does not comprise any layer with a thickness higher than 15 nm based on indium oxide;
the antireflective coating outer layer is a silica-based layer; and
the mean spectral reflection factor on the rear face for at least one wavelength in the 280-295 nm range for both an angle
of incidence of 30° and an angle of incidence of 45° is higher than 5%.

US Pat. No. 9,477,098

OPHTHALMIC LENSES TAKING INTO ACCOUNT THE WEARER'S HANDEDNESS

1. An ophthalmic lens adapted to be worn by a wearer, wherein the lens is designed as a function of the wearer's handedness,
wherein said ophthalmic lens has respective nasal and temporal half-widths of a near-vision zone with respect to a proximate-vision
gaze direction, of an intermediate-vision zone with respect to a meridian line, and of a distant-vision zone with respect
to a distant-vision gaze direction,

wherein said lens is asymmetric in that:
the nasal/temporal half-widths of one or more of the following:
the near-vision zone with respect to a proximate-vision gaze direction,
the intermediate-vision zone with respect to the meridian line,
the distant-vision zone with respect to a distant-vision gaze direction,
are asymmetric as a function of the wearers handedness, and/or
at least one optical parameter between the nasal part and the temporal part of the lens is asymmetric as a function of the
wearers handedness,

wherein said optical parameter is selected from
any one of central vision optical criteria selected from the group comprising: power in central vision, astigmatism in central
vision, high order aberration in central vision, acuity in central vision, prismatic deviation in central vision, ocular deviation,
object visual field in central vision, image visual field in central vision, magnification in central vision;

any one of peripheral vision optical criteria selected from the group comprising: power in peripheral vision, astigmatism
in peripheral vision, high order aberration in peripheral vision, pupil field ray deviation, object visual field in peripheral
vision, image visual field in peripheral vision, prismatic deviation in peripheral vision, magnification in peripheral vision;

any one of global optical criteria selected from the group comprising: magnification of the eye, temple shift,
any one of surface criteria selected from the group comprising: front or back mean curvature, front or back minimum curvature,
front or back maximum curvature, front or back cylinder axis, front or back cylinder, front or back mean sphere, front or
back maximum sphere, front or back minimum sphere, and/or

the maximal value (respectively, minimal value, peak-to-valley value, maximal gradient value, minimal gradient value, maximal
slope value, minimal slope value, average value) of any one of the preceding criteria,

in one or more useful zones of the lens, including zones for near-vision, distant-vision, and intermediate-vision,
wherein the lens is asymmetric in that at least one optical parameter (?) between the nasal (N) part and the temporal (T)
part of the lens is asymmetric as a function of the wearer's handedness, and wherein:

ABS[(?T??N)/avg(?T;?N)]>0.15

wherein:
ABS is absolute value,
avg denotes the average value.

US Pat. No. 9,327,380

LENS BLOCKING METHOD AND RELATED DEVICE

1. A method for blocking an optical lens, comprising an upper and a bottom lens surface, on a holding unit using a thermoplastic
material layer, the holding unit comprising a bottom part to be inserted and fixed in a lens machining tool and an upper part
with an upper assembling surface, where the upper assembling surface is smaller than the bottom lens surface, said method
comprising the steps of:
a) providing around the holding unit a removable part comprising an upper part surface which is arranged so as to extend the
upper assembling surface of the holding unit and not to contact the bottom lens surface;

b) providing a predetermined volume of a thermoplastic material on the upper assembling surface or on a tape arranged on the
upper assembling surface of the holding unit, where the predetermined volume is determined so as to obtain a desired shape
and size of the thermoplastic material layer;

c) orienting the lens in a desired spatial configuration;
d) positioning the lens so that its bottom surface or the bottom surface of a tape stuck to the lens bottom surface contacts
the thermoplastic material of step b) at a softened or melted state and pressing the lens so as to keep the lens spatial configuration
constant and to let the thermoplastic material flow from the upper assembling surface of the holding unit to at least a part
of the upper part surface of the removable part and form the desired shape and size of the thermoplastic material layer;

e) removing the removable part from around the holding unit after at least partial consolidation of the thermoplastic material
layer,

wherein the holding unit comprises at least an external wall having an axial symmetry, where the symmetry axis is a vertical
axis,

wherein the removable part has an axial symmetry with the vertical symmetry axis of the external wall of the holding unit,
wherein the shape of the upper part of the holding unit is a cylinder of diameter D which external wall upper edge forms the
perimeter of the upper assembling surface and where the removable part is an annular part which internal wall has a diameter
D and can move slidingly along the external wall of the upper part,

wherein the holding unit is chosen within a series of N holding units where the bottom part of each holding unit has the same
shape and size and where the upper parts of the N holding units of the series have increasing diameters (D1, D2, . . . DN) so as to provide N upper assembling surfaces of increasing surface, where N is an integer equal to or greater
than 2, and

wherein the removable part comprises at least two co-axial annular sliding parts, each having an internal and external wall,
where the internal wall of the first annular sliding part has a diameter D1 of the external wall of the upper part of the first holding unit of the series, the external wall of said first annular sliding
part has a diameter D2 of the external wall of the upper part of the second holding unit of the series, the internal wall of the second annular
sliding part has the diameter D2 of the external wall of the upper part of the second holding unit and where the upper part surface of the first, and respectively
the second, annular sliding part is movable so as to be the upper part surface arranged so as to extend the upper assembling
surface of the first, and respectively the second, holding unit.

US Pat. No. 9,283,717

METHOD FOR PRODUCING AN OPHTHALMIC LENS COMPRISING A BASE LENS AND A FILM STRUCTURE

1. A method for producing an ophthalmic lens including a base lens and a film structure bound to a first optical surface of
said base lens, the method comprising:
/1/ obtaining a semi-finished lens, having the first optical surface and a temporary surface opposite to said first optical
surface;

/2/ obtaining the film structure;
/3/ applying the film structure onto the first optical surface of the semi-finished lens, with layered connecting means arranged
between said film structure and said first optical surface of the semi-finished lens;
step /3/ being performed using a pressing device for producing pressure so as to push the film structure and the first optical
surface of the semi-finished lens against each other;
/4/ after step /3/ and after pressure has been removed: heating the semi-finished lens with the film structure connected to
said semi-finished lens, up to a maximum heating temperature which is higher than a glass-transition temperature of a constituting
material of the semi-finished lens and less than another glass-transition temperature of a material of the film structure;
and

/5/ after step /4/: machining the temporary surface of the semi-finished lens so as to obtain a second optical surface opposite
to the first optical surface, thereby producing the base lens comprised in the ophthalmic lens, the machining causing said
base lens to be thinner than the semi-finished lens.

US Pat. No. 9,239,472

METHOD FOR DETERMINING BINOCULAR PERFORMANCE OF A PAIR OF SPECTACLE LENSES

1. A method implemented by computer means for determining binocular performance of a pair of spectacle lenses when a visual
environment is seen by the right and left eyes of a wearer through right and left spectacle lenses respectively, comprising:
an eyes characteristics providing step in which eyes characteristics data representing the characteristics of the right and
left eyes of the wearer are provided,

a pair of spectacle lenses providing step in which spectacle data representing the pair of spectacle lenses are provided,
an environment providing step in which visual environment data representing a visual environment are provided,
a binocular performance criteria selecting step in which at least one binocular performance criterion which expresses the
binocular performance of the pair of spectacle lenses for viewing an object point in the visual environment is selected,

a binocular performance criteria determining step in which the at least one binocular performance criterion is determined
for a plurality of object points distributed in the visual environment,

wherein the at least one binocular performance criterion is selected among one or a combination of the following criteria
groups consisting of:

central vision criteria group consisting of:
total prismatic deviation in central vision,
horizontal ocular deviation in central vision,
total ocular deviation in central vision,
derivative of any of the preceding central vision criteria,
peripheral vision criteria group consisting of:
power in peripheral vision,
astigmatism in peripheral vision,
horizontal prismatic deviation in peripheral vision,
vertical prismatic deviation in peripheral vision,
total prismatic deviation in peripheral vision,
total pupil field ray deviation,
horizontal pupil field ray deviation,
vertical pupil field ray deviation,
magnification in peripheral vision,
variation of any of the preceding peripheral vision criteria,
added horizontal disparity,
total horizontal disparity,
added vertical disparity,
total vertical disparity,
rotation binocular cyclodisparity,
fusional horizontal translation, and
fusional vertical translation.

US Pat. No. 9,195,078

METHOD FOR DETERMINING, IN A NATURAL POSTURE, AT LEAST ONE GEOMETRIC/PHYSIOGNOMIC PARAMETER ASSOCIATED WITH THE MOUNTING OF AN OPHTHALMIC LENS IN A SPECTACLE FRAME

1. A method for determining at least one geometric/physiognomic parameter associated with the mounting of an ophthalmic lens
in a spectacle frame (30) intended to be worn by a wearer, in a natural posture of the wearer's head in which a Frankfurt plane (PF) of the wearer's
head is substantially horizontal, comprising the following steps:
a) capturing at least one substantially frontal image of the wearer's head (10) with an image capture device,

b) determining a measured value (Am) of an angle of inclination (A) of the wearer's head (10) during the capture of the substantially frontal image, which depends on the inclination of the wearer's head about a main
axis perpendicular to a sagittal plane (PS) of the wearer's head,

c) determining a reference value (Aref) of said angle of inclination (A) corresponding to a natural posture of the wearer's
head (10), by carrying out the following steps:

c1) capturing at least one substantially profile image of the wearer's head in the natural posture with at least one profile
indexing element (23, 24) positioned on the wearer's head (10), where said at least one substantially profile image includes an image of the at least one profile indexing element (23, 24) identifiable on the wearer's head,

c2) identifying, on said substantially profile image, the image of the at least one profile indexing element (23, 24),

c3) determining a geometric characteristic of the image of this profile indexing element, and
c4) determining said reference value (Aref) of said angle of inclination (A) as a function of said geometric characteristic
determined in step c3), and

d) determining said looked-for geometric/physiognomic parameter on the basis of the substantially frontal image captured and
as a function of the difference between said measured value (Am) of the angle of inclination (A) determined in step b) and
said reference value (Aref) of said angle of inclination (A) determined in step c).

US Pat. No. 9,625,742

OPTICAL ARTICLE COMPRISING A PRECURSOR COATING OF AN ANTI-FOG COATING AND A TEMPORARY LAYER MADE OF METAL FLUORIDES OR COMPOUNDS INCLUDING MAGNESIUM AND OXYGEN

1. An optical article, comprising:
a substrate having at least one main surface and a precursor coating for an antifogging coating, said precursor coating being
in direct contact either with said main surface of the substrate, or with a first coating, when said main surface of the substrate
is coated with a first coating, said precursor coating being formed by depositing at least one hydrophilic compound A on the
substrate or, when it is present, on the first coating,

wherein said precursor coating comprises an internal part in which said compound A is grafted to the substrate or, when it
is present, to the first coating, and an external part that can be removed by washing and/or wiping, resulting from the deposition
of the compound A, and

wherein said precursor coating is coated with a temporary layer, in direct contact with it, comprising at least one compound
selected from the group consisting of metal fluorides and compounds comprising magnesium and oxygen.

US Pat. No. 9,387,631

METHOD OF MANUFACTURING AN OPHTHALMIC LENS FOR PROVIDING AN OPTICAL DISPLAY

1. A method of manufacturing an ophthalmic lens, said lens having a front face and a rear face, and into which light beams
emitted by an optical element of a light beam generator system are introduced and directed towards an eye of a wearer to enable
information content to be viewed by a transparent light guide, said light beam generator system being constituted by optical
pieces, a first optical piece placed on a first entry surface of the rear face of the lens and a second optical piece placed
on a second entry surface of the front face of the lens,
said method comprising the step of
molding the lens between a first mold portion and a second mold portion and wherein
the first entry surface is formed by making in the lens a molded cavity using a stud secured to the second mold portion, and
that the light guide is temporarily secured to said stud prior to molding;

the second entry surface is formed by making in the lens second a molded cavity using a mold insert temporarily secured to
said light guide prior to molding, said first mold portion being placed above said mold insert, said mold insert has a section
in a form of an L-shape, a branch of the L-shape being placed on and directly contacting a top surface of said stud and the
other branch of the L-shape being placed on the light guide; and wherein said light guide directly contact said top surface
of said stud.

US Pat. No. 9,289,119

DEVICE FOR DETERMINING AT LEAST ONE SIGHT PARAMETER OF A SUBJECT IN A PLURALITY OF VIEWING DIRECTIONS

1. A device for determining at least one vision parameter of a subject along a plurality of monocular or binocular sight directions
of the subject, said device comprising:
a binocular or monocular ophthalmological measuring apparatus comprising ophthalmological means for measuring the vision parameter
to be determined, which means are able to emit an illuminating optical beam, and to receive a measuring optical beam along
at least one measuring optical axis aligned with a preset sight direction of the eye in question;

visual stimulating means able to generate a stimulating optical beam along a stimulating optical axis aligned with said preset
sight direction of the eye in question; and

head-supporting means able to receive the head of a subject and to keep it in a set posture,characterized in that:there being defined an ellipse having a first focal point on said measuring optical axis and a second focal point, said device
comprises:
at least one optical aligning system placed between the ophthalmological measuring means and the eye in question, said optical
aligning system being able to reflect said illuminating and measuring optical beams between the focal points of the ellipse;
and

adjusting means able to modify the relative position of said optical aligning system relative to the head-supporting means
so as to bring the second focal point into the vicinity of the center of rotation of the eye in question of the subject,

said optical aligning system comprising first reflective optical means and second reflective optical means, said first reflective
optical means being tangent to said ellipse at a first point in a first sight direction and at at least one other point in
at least one other sight direction of the eye in question, and said second reflective optical means being mounted so as to
be rotatably movable about the first focal point between a first position in which the optical aligning system aligns said
first sight direction with the measuring optical axis and at least one other position in which the optical aligning system
aligns said at least one other sight direction of the eye in question with the measuring optical axis.

US Pat. No. 9,095,948

THERMOPLASTIC MATERIAL

1. A method of blocking an optical substrate in a machining position, the method comprising:
heating a thermoplastic material formulated from a composition comprising a shellac and a plasticizer, wherein the shellac
and the plasticizer are chosen so as to have the softening point of the thermoplastic material greater than or equal to 60°
C. and less than or equal to 85° C.; and

docking the optical substrate to the thermoplastic material so as to be positioned in a machining position.
US Pat. No. 9,057,140

METHOD OF MANUFACTURING AN ELECTROCHROMIC ARTICLE

1. A process for manufacturing an electrochromic article comprising the following successive steps:
(a) the deposition of a layer of an electrochromic compound on the surface of a transparent or translucent electrically conductive
substrate, said layer of electrochromic compound covering only one portion of the surface of said electrically conductive
substrate and leaving free at least one other portion thereof,

(b) the deposition of a layer comprising a redox agent which is a reducing agent or an oxidizing agent for the electrochromic
compound, on the portion of the surface of the electrically conductive substrate not covered by the layer of electrochromic
compound,

(c) the contacting of the layer of electrochromic compound, deposited in step (a), and of the layer of redox agent, deposited
in step (b), with a liquid electrolyte for a sufficient time to enable the reduction or the oxidation of the electrochromic
compound by the redox agent, and

(d) the removal of the electrolyte by rinsing and/or drying.

US Pat. No. 9,980,639

VISUAL COMPENSATION SYSTEM AND OPTOMETRIC BINOCULAR DEVICE

1. A visual compensation system allowing observation along an optical axis of observation with an optical correction of variable power, comprising:a first optical element rotatable with a rotary movement centered on the optical axis and having a first cylindrical power along the optical axis;
a second optical element rotatable with a rotary movement centered on the optical axis and having a second cylindrical power along the optical axis;
a lens having said optical axis as an axis and being of variable spherical power; and
a mechanism driven by a motor, the mechanism being configured to drive a ring to rotate in order to control the spherical power of the lens of variable spherical power,
wherein the lens of variable spherical power is a lens containing a fluid and a deformable membrane.

US Pat. No. 9,404,863

EYEGLASS RATING WITH RESPECT TO PROTECTION AGAINST UV HAZARD

1. A method of rating an eyeglass with respect to protection provided by the eyeglass against UV hazard, whereby an index
value is calculated for quantifying a reduction in a total UV amount impinging onto an eye for a wearer of the eyeglass with
respect to UV exposure without eyeglass, the method comprising:
obtaining a measurement of UV intensity, the measurement being generated by a photometer for light reflecting from a face
of the eyeglass;

providing a value of UV reflection on a back face of the eyeglass, the UV reflection being obtained by integrating spectral
reflection values relating to the back face of the eyeglass;

applying UV reflection of the eyeglass to a formula with a non-zero positive factor for the UV reflection; and
calculating the index value from a non-zero base number divided by a result obtained in the applying step, the index value
being based in part on measurements obtained from the obtaining a measurement step.

US Pat. No. 9,285,608

METHOD FOR DETERMINING FRONT AND REAR SURFACES FOR OPTICAL PATCHES

1. A method for determining a set of front patch surfaces and a set of rear patch surfaces for a series of optical patches
each configured to provide optical power to a wearer of spectacles when the optical patch is combined with an eyeglass of
the spectacles, the optical patch having a resiliency such that the front patch surface or the rear patch surface of said
optical patch conforms to a shape of a posterior surface of the eyeglass,
each optical patch being obtained by combining one of the front patch surfaces with one of the rear patch surfaces,
each front patch surface being of pseudo-spherical shape, and each rear patch surface being comprised of a Fresnel structure
superimposed on a pseudo-spherical base shape, pseudo-spherical surface denoting a continuous surface with curvature values
existing at each point in the continuous surface,

the series of optical patches containing at least one optical patch respectively for prescriptions each obtained by combining
one optical power value out of a set of optical power values with one astigmatism value out of a set of astigmatism values,
the method comprising the following steps:
1) providing at least one specification condition for the optical patches;
2) for a start-prescription, determining one first rear patch surface and one first front patch surface so that an optical
patch obtained by combining said first rear patch surface and said first front patch surface meets the specification condition;

3) for each prescription within a prescription start-segment containing the start-prescription, and other than said start-prescription,
calculating a secondary front patch surface so that an optical test patch obtained by combining the first rear patch surface
with the secondary front patch surface corresponds to said prescription;

4) selecting a primary prescription sub-segment within the prescription start-segment, so that all optical test patches obtained
in step 3 and corresponding to prescriptions within said primary prescription sub-segment meet the specification condition;

5) selecting a secondary prescription sub-segment within the primary prescription sub-segment, so that all prescriptions are
contained in at least one prescription segment produced by a tiling based on said secondary prescription sub-segment, with
each prescription segment being obtained by translating the secondary prescription sub-segment used as a tile in a plane with
optical power and astigmatism coordinates;

6) for each prescription segment produced by said tiling, and for the prescription which is at a location with respect to
said prescription segment similar to that of the start-prescription within the secondary prescription sub-segment, determining
a secondary rear patch surface with Fresnel structure so that another optical patch obtained by combining said secondary rear
patch surface with the first front patch surface corresponds to the prescription; and

7) assigning a rear patch surface and a front patch surface to each prescription in the following manner:
7a for the start-prescription, the first rear patch surface and the first front patch surface determined in step 2 is assigned
when the prescription is within the secondary prescription sub-segment, and other than the start-prescription,
the first rear patch surface determined in step 2 is assigned, and
the secondary front patch surface calculated in step 3 for said prescription is assigned, and
when the prescription is within a prescription segment produced by the tiling other than the secondary prescription sub-segment,
the secondary rear patch surface determined in step 6 for said prescription segment is assigned, and
the same front patch surface is assigned as the first front patch surface assigned in sub-step 7a or the secondary front patch
surface assigned in sub-step 7b for the prescription within the secondary prescription sub-segment at the location similar
to that of the current prescription with respect to the prescription segment.

US Pat. No. 9,109,976

METHOD AND TOOL FOR MEASURING THE GEOMETRIC STRUCTURE OF AN OPTICAL COMPONENT

16. A system for measuring the geometric structure of an optical component delimited by a first face and a second face, said
system comprising:
a first measurement apparatus which measures a first signal resulting from a first transformation of a first probe signal
by said first face, a first simulation of said first transformation being used to obtain a first absolute estimation of the
signal resulting from said first transformation of the first probe signal by a first virtual face which is known and positioned
in a first measurement reference frame in a manner identical to said first face during a measurement of the first signal;

a second measurement apparatus which measures a second signal resulting from a second transformation of a second probe signal
by at least said second face, a second simulation of said second transformation being used to obtain a second absolute estimation
of the signal resulting from said second transformation of the second probe signal by at least one second virtual face which
is known and positioned in a first measurement reference frame in a manner identical to said second face during a measurement
of the second signal;

wherein at least one of said first and second measurement apparatuses carries out a zonal measurement;
at least one processor which determines a third transformation to pass from the first reference frame to the second reference
frame;

wherein the at least one processor performs a first calculation to estimate said first face on the basis of the first signal,
of said first simulation, of a first virtual face and of a first cost function quantifying a discrepancy between the first
estimation and the first signal; and

wherein the at least one processor performs a second calculation to estimate said second face on the basis of the second signal,
of said second simulation, of a second virtual face, of said third transformation and of a second cost function quantifying
a discrepancy between the second estimation and the second signal.

US Pat. No. 9,104,041

OPTICAL SYSTEM DETERMINATION ACCORDING TO ADVANCED CRITERIA

1. A method for manufacturing an optical system comprising the steps of:
i. selecting at least one criterion from among the groups consisting of:
a central vision criteria group consisting of: ocular deviation, object visual angular field in central vision, image visual
angular field in central vision, and a variation of preceding criteria;

a peripheral vision criteria group consisting of: pupil field ray deviation, object visual angular field in peripheral vision,
image visual angular field in peripheral vision, prismatic deviation in peripheral vision, magnification in peripheral vision,
and a variation of preceding criteria; and

a general criteria group consisting of: lens volume, magnification of the eyes, and temple shift;
ii. for each criterion selected in step i.), defining:
an evaluation zone comprising one or several evaluation domains and a set of target values associated with said evaluation
domains, if said criterion selected in step i.) belongs to the central or to the peripheral vision criteria groups, or

a target value associated with said criterion selected in step i.), if said criterion belongs to the general criteria group;
iii. selecting a starting optical system and defining a working optical system to be equal to the starting optical system,
wherein the starting optical system and the working optical system are each defined by coefficients of equations of its surfaces,
an index of glasses thereof, and positions of each surface relative to each other, and wherein each optical system comprises
at least two optical surfaces of a same lens;

iv. evaluating for the working optical system and for each criterion selected in step i.):
a set of criterion values associated with said evaluation domains selected in step ii.), if said criterion selected in step
i.) belongs to the central or peripheral vision criteria groups, or

a criterion value, if said criterion selected in step i.) belongs to the general criteria group;
v. modifying at least coefficients of equations of the at least two optical surfaces of the working optical system to minimize
a cost function considering target values and criterion values by repeating step iv.) until a stop criterion is satisfied,
wherein the at least two optical surfaces comprise at least a front and a back surface;

vi. calculating by optimization the optical system; and
vii. surface machining at least one optical surface in accordance with said calculated optical system.

US Pat. No. 9,778,485

PROCESS FOR APPLYING A FILM STRUCTURE ONTO A LENS BLANK

1. A process to apply a film structure onto a lens blank, said lens blank being limited by a top face, a bottom face and a
peripheral edge connecting said top face to said bottom face, said top face comprising a convex surface portion and a margin
portion located between the convex surface portion and the peripheral edge, the convex surface portion and the margin portion
forming a re-entrant angle along a depression track between said convex surface portion and said margin portion, the process
comprising:
arranging the film structure between the top face of the lens blank and a resilient cushion;
pressing the film structure against the top face of the lens blank by moving the resilient cushion and the lens blank closer
to each other, thereby deforming the resilient cushion and suppressing a gap existing initially between the film structure
and the top face of the lens blank, with a contact area of said film structure with said top face which increases when the
resilient cushion is being deformed, said contact area increasing progressively from an initial area comprised within the
convex surface portion to a final area astride at least a part of said convex surface portion and at least a part of the margin
portion adjacent said part of the convex surface portion, and

arranging a closed-loop shaped wedge piece between the resilient cushion and the film structure, said wedge piece being pressed
against the film structure by the resilient cushion being deformed, and said wedge piece being deformed to be situated in
line with the depression track when the contact area has reached the final area, along a moving direction of the resilient
cushion and the lens blank with respect to each other,

wherein the wedge piece is arranged initially so that a projection of said wedge piece onto the top face of the lens blank,
along the moving direction, is contained within the convex surface portion apart from the depression track, and the resilient
cushion causes the wedge piece to slide towards said depression track as the resilient cushion is deformed.

US Pat. No. 9,227,299

METHOD OF MANUFACTURING AN OPTICAL LENS

1. A method of manufacturing an optical lens, the method comprising:
a lens member providing step during which a lens member comprising a first surface and a first reference system identified
by engraved markings on the first surface are provided;

a surface data providing step during which surface data corresponding to a second surface of the optical lens to be manufactured
are provided;

a second markings providing step during which second markings are provided on the lens member defining a second reference
system;

a marking positioning error providing step during which a marking positioning error between the second markings and the engraved
markings is provided;

taping step during which an adhesive tape is provided on the first surface of the lens member; and
a manufacturing step during which the second surface of the optical lens is manufactured according to the surface data and
the marking positioning error such that the relative position of the first and second surfaces is respected.

US Pat. No. 9,164,201

LENS HAVING A PLURALITY OF SURFACES WITH ZONES

1. A lens (1) comprising at least two optical surfaces (S1, S2) each extending transversely relative to an optical axis (A-A) of the lens, so that light rays that pass through the lens
pass through one then the other of the two surfaces, each surface comprising active zones (ZA1, ZA2) inside of which a shape of said surface is adapted to produce part at least of the optical power of the lens for rays that
pass through said active zones, with a sagittal height discontinuity of each surface between two different active zones of
said surface,limits of the active zones (ZA1, ZA2) of a first of the two surfaces being located in line with limits of the active zones of the other of said two surfaces,the lens being characterised in that said first and second surfaces (S1, S2) furthermore comprise separating zones (ZS1, ZS2) arranged so that each of the first and second surfaces consists of an alternation between the active zones and the separating
zones,each active zone (ZA1, ZA2) of one of the first and second surfaces (S1, S2) being in line with a separating zone (ZS2, ZS1) of the other of said first and second surfaces, andthe shape of at least one of the first and second surfaces (S1, S2) in at least one of the separating zones (ZS1, ZS2) is adapted to increase at least one of the following angles:
a first angle (A1) formed by said surface (S1, S2) in said separating zone (ZS1, ZS2) with a direction of a sagittal height jump located at a limit between said separating zone and an active zone (ZA1, ZA2) adjacent to said separating zone,

a second angle (A2) formed by said surface (S1, S2) at a limit of between said separating zone (ZS1, ZS2) and an active zone (ZA1, ZA2) adjacent to said separating zone, and

a third angle (A3) formed by the other surface (S2, S1) at a limit of the active zone (ZA2, ZA1) of said other surface that is located in line with said separating zone (ZS1, ZS2), said third angle being formed by said other surface in said active zone with a direction of a sagittal height jump located
at the limit of said active zone,
relative to an angle (A10, A20, A30) located at a given location of the lens (1) and formed by an imaginary surface (S0) obtained by subtracting respective sagittal heights of the first and second surfaces (S1, S2), said angle for the imaginary surface being acute.
US Pat. No. 9,772,429

FLUORINE-DOPED STANNIC OXIDE COLLOIDS AND METHOD FOR PREPARING SAME

SHANGHAI UNIVERSITY, Sha...

1. A method for producing a colloidal alcoholic suspension of fluorine-doped stannic oxide particles, comprising the following
successive steps:
a) preparing a mixture comprising stannous oxalate, a quaternary ammonium fluoride salt, hydrogen peroxide and an acid, in
a solvent consisting of deionized water optionally mixed with at least one alcohol,

b) subjecting said mixture to hydrothermal treatment, so as to obtain a suspension,
c) desalting said suspension, and
d) optionally subjecting said desalted suspension to a solvent-exchange step with at least one alcohol.

US Pat. No. 9,661,297

PICTURES POSITIONING ON DISPLAY ELEMENTS

1. An improved system for binocular picture positioning:
a binocular displaying device comprising:
a right display element and a left display element, the right display element for presenting a right image to be displayed
and the left display element for presenting a left image to be displayed; and

a means for capturing pupillary parameters; and
a control system for receiving the pupillary parameters from the binocular displaying device, the control system including
logic that, when executed, causes the control system to perform operations comprising at least:

receive the pupillary parameters from the means for capturing the pupillary parameters;
calculate information about the pupillary parameters, the information including interpupillary distance, half interpupillary
distance, a change in interpupillary distance, a change in half interpupillary distance, and a distance from pupils to the
right image and the left image to be displayed;

determine positioning of the right image to be displayed for the right display element based at least in part on the information
about the pupillary parameters;

determine positioning of the left image to be displayed for the left display element based at least in part on the information
about the pupillary parameters;

generate the right image to be displayed or an active right image correction on the right display element based on the calculated
information about the pupillary parameter; and

generate the left image to be displayed or an active left image correction on the left display element based on the calculated
information about the pupillary parameter.

US Pat. No. 9,574,872

SYSTEM AND METHOD FOR OPTICAL READING OF MARKINGS PRINTED ON A FACE OF AN OPHTHALMIC LENS

1. An optical system for reading marks printed on a face (20) of an ophthalmic lens (2), said system (1) comprising:
an image capturing device (26);

a light source (15); and

a holder (18, 31) for receiving said ophthalmic lens (2);
with said image capturing device (26) and said light source (15) and said holder (18, 31) being configured so that, when said ophthalmic lens (2) is received by said holder (18, 31), said light source (15) illuminates said lens (2), thereby making said marks (21-24) visible to said image capturing device (26);
characterized in that said system (1) furthermore comprises a movable element (14) to which said light source (15) is fastened, which movable element (14) has a working position in which said movable element (14) at least partially encircles said holder (18) and in which said light source (15) faces said holder (18, 31), and a retracted position in which said movable element (14) is located a distance away from said holder (18, 31), with said light source (15) and said holder (18, 31) being configured so that, in said working position, when said ophthalmic lens (2) is received by said holder (18, 31) with a masking element (39) that covers said marks (21-24), said light source (15) illuminates an edge face (34) of said lens (2) so that the light penetrates into a bulk (35) of said lens (2) and reaches said masking element (33) through said lens (2).

US Pat. No. 9,421,719

PRODUCTION OF A TRANSPARENT OPTICAL COMPONENT HAVING A CELLULAR STRUCTURE

Centre National de la Rec...

1. A method, comprising
producing a transparent optical component having a cellular structure, adapted to provide a view of an object located on a
first side of the component and at a first distance from said component, for a user situated on a second side of the component
opposite the first side and at a second distance from said component, the component comprising a network of walls forming
a set of cells juxtaposed parallel to a surface of the component, between the first and second sides, each wall extending
perpendicularly to the surface of the component to separate two adjacent cells, and each wall having a thickness, parallel
to the surface of the component, of between 0.1 ?m and 5 ?m, said producing including:

/1/ determining a set of points in the surface of the component with an irregular distribution of said points in said surface,
each point being used to form a center of one of the cells; and

/2/ forming a Voronoi partition of said surface of the component, forming the Voronoi partition including determining a position
and an orientation of each wall parallel to the surface of the component, said Voronoi partition including polygons constructed
from the centers of the cells, such that said network of walls contains at least five walls having different respective orientations
parallel to the surface of the component, wherein the optical component comprises an ophthalmic lens for spectacles, or a
film configured to be applied to a transparent substrate to form an ophthalmic lens for spectacles.

US Pat. No. 9,969,051

HOLDER FOR PNEUMATICALLY BLOCKING AN OPTICAL LENS

1. A pneumatic blocking support for blocking an optical lens on a surfacing machine, comprising:a holding part for fixing it to a corresponding member of said surfacing machine, and
a lens-blocking part for blocking said optical lens and which comprises a body from which there project stops arranged to offer the optical lens a rigid footing, and a seal against which the optical lens is able to be made to bear so as to delimit with said body a reduced-pressure chamber,
wherein said stops comprise first rods which are mounted with translational mobility with respect to said body so as to come to bear via their free ends against the optical lens, and
return means are provided for returning said first rods against the optical lens.

US Pat. No. 9,784,991

PROCESS OF DETERMINATION OF A SEMI-FINISHED BLANK

1. A method for selecting a semi-finished lens blank having two defined faces for processing it into a finished ophthalmic
lens for a given wearer, each defined face of the semi-finished lens blank being intended to allow producing an ophthalmic
lens by machining an opposite face, the method comprising the steps of:
determining a set of defined faces for a product line of finished ophthalmic lenses, each defined face of the set of defined
faces being defined for a corresponding subset of wearer data, frame data, or both of possible wearers;

determining, for each defined face of the set of defined faces, a minimum thickness requirement necessary to produce all of
the lenses of the corresponding subset of wearer data, frame data, or both of possible wearers, the minimum thickness requirement
being a thickness providing a minimum volume of material of a semi-finished lens blank necessary for allowing removal of material
so as to process the lenses of the corresponding subset of wearer data, frame data, or both of possible wearers;

determining combinations of two defined faces of the set of defined faces to be paired to produce subsets of paired defined
faces;

defining a set of double faced semi-finished lens blanks each consisting of two paired defined faces and including the minimum
thickness requirements respectively determined for each of said paired defined faces in a manner that allows producing all
of the lenses of two corresponding subsets of wearer data, frame data, or both of possible wearers for the product line of
finished ophthalmic lenses;

determining a defined face satisfying the wearer data, frame data, or both determined for said finished ophthalmic lens to
be processed;

selecting a double faced semi-finished lens blank among the defined set of double faced semi-finished lens blanks, one of
the two defined faces of said selected double-faced semi-finished lens blank corresponding to the determined defined face
for the finished ophthalmic lens to be processed;

using characteristics of the determined defined face of the selected double faced semi-finished lens blank to configure a
lens processing machine to enable the lens processing machine to process the opposite face of the selected double faced semi-finished
lens blank to result in said finished ophthalmic lens of the product line.

US Pat. No. 9,751,184

OPHTHALMIC-LENS HOLDER

ESSILOR INTERNATIONAL, C...

1. A holder for an ophthalmic lens, comprising:
a plate, and
three studs which are mounted on the plate, the three studs projecting from the plate so as to have free ends by way of which
the three studs are designed to support the ophthalmic lens, and at least one of the three studs is mounted so as to be able
to rotate on the plate about a rotation axis,

wherein the free end of said at least one stud is located at a distance of between 5 and 25 millimeters from the rotation
axis of the at least one stud, and

wherein the at least one stud (250) is free to pivot through one complete revolution about the rotation axis (A1),

wherein said at least one stud comprises a finger in the form of a stem, and a base to which the finger is fixed and which
is mounted so as to be able to rotate on the plate, and

wherein said base is in the form of a transparent disk and is mounted in a corresponding circular housing in the plate.
US Pat. No. 9,658,467

OPHTHALMIC LENS THAT CAN BE EDGED, COMPRISING A HYDROPHOBIC BILAYER AND A TEMPORARY METAL FLUORIDE LAYER

1. An ophthalmic lens fit for edging, comprising a front main face and a back main face, wherein it is obtained by depositing
in succession in this order on at least one of the main faces of the lens and preferably the front main face:
at least one first hydrophobic layer, of a physical thickness of 6 to 16 nm, obtained by depositing a composition comprising
a constituent A chosen from fluorinated compounds and preferably perfluorinated compounds containing at least one silanol
group or a silanol-group precursor, and the number average molar mass of which is higher than or equal to 2000 g/mol and preferably
2000 to 10000 g/mol;

at least one second hydrophobic layer, of a physical thickness ranging from 3 to 20 nm, obtained by depositing a composition
comprising a constituent B chosen from fluorinated compounds and preferably perfluorinated compounds containing at least one
silanol group or a precursor thereof and the number average molar mass of which is lower than or equal to 900 g/mol;

at least one temporary layer comprising a metal fluoride, preferably magnesium fluoride, of a physical thickness of 22 to
50 nm; and

optionally a temporary layer comprising a metalloid or metal hydroxide and/or oxide.
US Pat. No. 9,631,114

COATING COMPOSITION FOR AN OPTICAL ARTICLE, COMPRISING A COLLOIDAL SUSPENSION OF ZIRCONIA PARTICLES

1. A transparent coating composition comprising:
(a) a transparent colloidal suspension of zirconia nano-particles comprising mainly single monoclinic rod-shaped crystallites,
which particles represent from 10 to 85 dry wt. % of the dry weight of the composition,

(b) at least one epoxysilane hydrolyzate,
(c) optionally, at least one alkoxysilane which does not contain any reactive functional group, and
(d) a curing catalyst,
wherein the composition does not contain any other metal oxide than zirconia.

US Pat. No. 9,557,578

METHODS FOR DETERMINING A PROGRESSIVE OPHTHALMIC LENS

1. A method implemented by computer means, for determining a progressive ophthalmic lens with vision correcting properties
related to a prescription of an individual wearer and enabling reduction of lens distortion of a lens, the lens to comprise
a near vision area, a far vision area, and a main meridian separating the lens into a nasal area and a temporal area, the
method comprising:
providing a misalignment error (Tx) in an X axis direction of the lens due to a manufacturing process to be used to manufacture
the lens,

providing a misalignment error (Ty) in a Y axis direction of the lens due to the manufacturing process to be used to manufacture
the lens,

determining a first surface and a second surface of the lens;
determining the second surface to provide, in combination with the first surface, all vision correcting properties related
to the prescription of the individual wearer;

determining a spherical area on the first surface of the lens having a substantially constant sphere value, and including
within the spherical area a far vision diopter measurement position of the individual wearer, the far vision diopter measurement
position (“FV position”) and a near vision diopter measurement position (“NV position”) of the individual wearer having substantially
a same mean sphere value; and

determining the first surface to reduce the lens distortion by defining a toric area extending outside the spherical area
on the first surface in at least one of the nasal area and the temporal area, such that characteristics of the toric area
are related to astigmatism,

the spherical area having a first part and a second part, with the first part including the FV position and the second part
including the NV position, said first part being separated from or continuous with the second part,

the size of each of the first part and the second part of the spherical area being defined by a reference width ‘a’ and a
reference height ‘b’,

the FV or NV position being centered at its respective part of the spherical area defined by the reference distance ‘a’ and
the reference distance ‘b’,

whereby for the first part of the spherical area including the FV position, the reference distance ‘a’ is set to be greater
than two times the misalignment error (Tx) in the X axis direction of the lens due to the manufacturing process, and the reference
distance ‘b’ is set to be greater than two times the misalignment error (Ty) in the Y axis direction of the lens due to the
manufacturing process, and

for the second part of the spherical area including the NV position, the reference distance ‘a’ is greater than two times
the misalignment error (Tx), and the reference distance ‘b’ is greater than two times the misalignment error (Ty).

US Pat. No. 9,274,351

METHOD FOR OPTIMIZING THE POSTURAL PRISM OF AN OPHTHALMIC LENS

1. Method for optimizing a postural prism to be added to a pair of ophthalmic multifocal lenses adapted to a wearer and to
slow down myopia progression, each multifocal ophthalmic lens comprising at least a first and a second vision zone, the first
and second vision zones being distinct, the first vision zone being adapted to a first distance vision, the postural prism
being optimized so as to have the wearer gaze through the first vision zone when gazing at a target at a first distance, the
method comprising:
an initial pair of ophthalmic multifocal lenses providing step S1, during which the pair of ophthalmic multifocal lenses adapted to the wearer is provided to the wearer, each ophthalmic multifocal
lens comprising at least the first and the second vision zones, the first vision zone being adapted to the first distance;

a postural prism adding step S2, during which a first postural prism is added to each ophthalmic multifocal lens;

a gazing step S3, during which the wearer is required to gaze at at least the first distance target through the pair of ophthalmic multifocal
lenses with the first postural prism of the postural prism adding step S2; and

a gazing direction determining step S4, during which a wearer's gazing direction during the gazing step S3 is determined,

steps S2 to S4 being repeated while changing the first postural prism and imposing that any added postural prism is smaller than or equal
to a maximum prism value when steps S2 and S4 are repeated, steps S2 to S4 being repeated so as to determine a smallest added postural prism for which the wearer's gazing direction determined during
the gazing direction determining step S4 passes through the first vision zone, and

the first vision zone being adapted to a near vision and the first distance corresponding to a near vision distance.

US Pat. No. 9,132,594

BI-LAYER ADHESIVE FOR LENS LAMINATION

1. A method for manufacturing a functionalized optical element comprising:
providing an optical base element;
providing a functionalized layered structure that includes at least one functional layer, such that the functionalized layered
structure adheres to the optical base element, the providing including the steps of:

applying a first coating as a layer of latex adhesive onto one exposed surface of the at least one functional layer;
drying said first coating thereby forming a dried latex adhesive layer which bonds strongly to the at least one functional
layer;

applying a second coating as a layer of hot-melt adhesive (HMA) onto the dried latex adhesive layer to form a uniformly thin
bi-layer adhesive lamina of optical quality, wherein a polymer for forming the HMA layer includes only a thermoplastic polymer;

drying the second coating applied as the HMA layer before hot pressing,
each of the first coating and the second coating comprising a different adhesive layer; and
upon preparing the bi-layer adhesive lamina, hot pressing the functionalized layered structure against the optical base element
with the bi-layer adhesive lamina therebetween, whereby the second coating formed as a dried HMA layer bonds with the optical
base element,

the bi-layer adhesive lamina forming a functionalized optical element,
such that a high adhesive strength is thereby provided between the optical base element and the functionalized layered structure
by using the latex adhesive and the HMA layer in combination to form the bi-layer adhesive lamina to address disparate material
properties between the at least one functional layer and the optical base element.

US Pat. No. 10,088,602

OPTICAL ARTICLE COMPRISING AN ANTIREFLECTIVE COATING WITH A VERY LOW REFLECTION IN THE VISIBLE AND ULTRAVIOLET REGIONS

ESSILOR INTERNATIONAL Cha...

1. An ophthalmic lens comprising a transparent substrate with a front main face and with a rear main face, at least one of the main faces being coated with a multilayered antireflective coating comprising a stack of at least one high refractive index layer (HI) having a refractive index higher than or equal to 1.55 and at least one low refractive index layer (LI) having a refractive index lower than 1.55, wherein:said at least one high refractive index layer (HI) and said at least one low refractive index layer (LI) are adjacent, forming a bilayer;
said bilayer has a physical thickness lower than or equal to 60 nm;
said bilayer is, in the direction moving away from said transparent substrate, in second to last place in said multilayered antireflective coating; and
said multilayered antireflective coating has a mean reflection factor RUV between 280 nm and 380 nm, lower than 5% for an angle of incidence in the range from 20° to 50°.

US Pat. No. 9,952,447

METHOD FOR DETERMINING A BEHAVIOURAL, POSTURAL OR GEOMETRIC-MORPHOLOGICAL CHARACTERISTIC OF A PERSON WEARING SPECTACLES

13. A method for determining at least one characteristic for optimizing the wear position of a pair of spectacles on the face of a wearer, said optimizing characteristic being a geometrico-morphological, postural or behavioral characteristic, the pair of spectacles including a frame and two lenses, the method including steps of:a) illuminating at least part of the head of the wearer using an infrared light source;
b) acquiring, via an infrared image sensor, an image of the head of the wearer illuminated by the infrared light source, in which image the pair of spectacles and the eyes of the wearer appear;
c) locating, in the image acquired in step b), largest reflections of the infrared light source reflected by the two lenses of the pair of spectacles and at least one corneal reflection of the infrared light source reflected by one of the two eyes of the wearer; and
d) deducing by a processing unit said geometrico-morphological, postural or behavioral characteristic depending on:
the distances separating an observable axis from the centers of the two largest reflections, and
the position of said corneal reflection in said image.

US Pat. No. 9,891,447

PAIR OF PROGRESSIVE OPHTHALMIC LENSES

1. A method for providing a pair of progressive ophthalmic lenses to an identified wearer, said method comprising the following
steps:
/1/ for the wearer of both lenses:
obtaining prescriptions for both eyes including a prescribed far vision mean refractive power and a prescribed addition for
each of the two lenses, said prescribed addition being common to both lenses of the pair;

obtaining a value for a separation distance between both pupils of the wearer, and a position of a cyclopean eye for the wearer;
and

defining a cyclopean coordinate system for the wearer, based on the pupil separation distance and the cyclopean eye position;
/2/ for each lens in standard as-worn conditions of the lens by the wearer:
determining a main line, a fitting cross, a prism reference point, and a mean refractive power for each gaze direction through
the lens corresponding to a lowering angle ? and to an azimuth angle ? within a cyclopean coordinate system,

the main line for each lens corresponding to gaze directions for which a resulting astigmatism is minimum as a function of
the azimuth angle ?, and at constant value for the lowering angle ?, and

the lowering angle ? being measured from the gaze direction through the fitting cross, with positive values downwards;
defining a first height as a difference in the lowering angle ? between a gaze direction on the main line where the mean refractive
power equals the prescribed far vision mean refractive power plus 10% of the prescribed addition, and the gaze direction through
the fitting cross;

defining a second height as a difference in the lowering angle ? between 36° and a gaze direction on the main line where the
mean refractive power equals the prescribed far vision mean refractive power plus 85% of the prescribed addition;

defining a maximum mean refractive power gradient for gaze directions corresponding to a cyclopean gaze direction which is
comprised:

inside a zone centered on the cyclopean gaze direction corresponding to a gaze direction passing through the prism reference
point of said lens and containing all cyclopean gaze directions respecting the following inequality (|?|2+|?|2)1/2?40°, and

outside a central optical zone, said central optical zone comprising a main line of cyclopean directions for which, for each
angle ?min, the resulting astigmatism reaches its minimum, the central optical zone being delimited on either side of the main line
by cyclopean gaze directions whose azimuth angle is equal to ?min±5°;

/3/ optimizing at least one lens of the pair,
so that at least one among a difference between the first heights of the two lenses is set to a value greater than 8° in absolute
value, and a difference between the second heights of the two lenses is set to a value greater than 5° in absolute value,
and

so that a relative difference between the two lenses in the maximum mean refractive power gradient is set to a value less
than 0.08 in absolute value; and

/4/ manufacturing both lenses of the pair in accordance with an optimization result of step /3/.

US Pat. No. 9,888,183

OPTICAL SYSTEM FOR IMAGING AN OBJECT

1. An optical system for imaging an object comprising at least:
a loupe comprising a lens for magnifying the object, the lens being disposed in a frame;
a camera arranged between the lens of the loupe and the object to image at least a portion of the same field of view as the
lens of the loupe;

a handle extending from the frame, wherein the camera:
is movable between a retracted position in the handle and an extended position, and
is spaced away from the handle in the extended position to image at least a portion of the same field of view as the lens
of the loupe; and

a transparent digital display disposed on the lens and is arranged for displaying in real time pictures and/or videos imaging
by said camera when the camera is in the extended position and for being transparent when the camera is in the retracted position.

US Pat. No. 9,638,834

HYBRID EPOXY-ACRYLIC WITH ZIRCONIUM OXIDE NANOCOMPOSITE FOR CURABLE COATINGS

SHANGHAI UNIVERSITY, Sha...

1. A method comprising the steps of:
mixing an acrylic silane and a methanol-based ZrO2 sol to create a methanol-based silane-modified ZrO2 sol; then

mixing at least an acrylic monomer, an epoxy monomer, and the methanol-based silane-modified ZrO2 sol to obtain a composition comprising:

a continuous liquid phase comprising an acrylic monomer and an epoxy monomer; and
a dispersed nanoparticulate comprising ZrO2 modified with an acrylic silane; and

wherein the composition is transparent to visible light.
US Pat. No. 9,637,643

METHOD FOR THE PRODUCTION OF AN OPTICAL ARTICLE WITH IMPROVED ANTI-FOULING PROPERTIES

1. A method for the manufacture of an optical article comprising:
providing a substrate having two main faces and bearing —OH functions on at least one of the faces; and
exposing successively in this order at least one face of the substrate bearing —OH functions to at least 3 distinct materials
defined as M1, M2, M3, and optionally a material M4, in a vacuum chamber under conditions resulting in the deposit of those
materials on the surface of the substrate wherein:

M1 is a substituted silane comprising:
at least one function X1 directly bonded to a Si atom of the substituted silane, wherein the Si—X1 group is capable of forming
a covalent bond with a OH group of the substrate; and

at least one fluorine containing group,
M2 is a substituted silane of number average molecular weight less than or equal to 900 g/mol comprising:
at least one function X2 directly bonded to a silicon atom of said substituted silane wherein the Si—X2 group is capable of
forming a covalent bond with a —OH group of the substrate and/or a covalent bond with M1; and

at least one hydrophobic or oleophobic group, or at least one hydrophilic group; and
M3 is a metal fluoride;wherein M1 has a weight average molecular weight higher than M2 and the difference between M1 and M2 weight average molecular
weights is equal to or higher than 600 g/mol.

US Pat. No. 9,618,771

METHOD FOR DETERMINING A PROGRESSIVE OPTHALMIC LENS AND A SET OF SEMI FINISHED LENS BLANKS

1. A computer implemented method for manufacturing a progressive ophthalmic lens from a semi-finished lens blank having a
regressive front surface exhibiting a final regression and an unfinished rear surface, the manufacturing method comprising
the steps of:
defining an upper part on each surface of the lens and a lower part on each surface of the lens;
choosing a refractive index of the lens;
choosing a base value for the front surface of the lens;
determining in a determining step a value of regression (d) to be applied to the whole front surface so that said final regression
is less than or equal to said value of regression (d), which is the maximum value among first, second and third intermediate
values of regression (d=max [d1, d2, d3]), wherein the determining step comprises the sub-steps of:

determining said first intermediate value of regression (d1) as the strongest regression to be applied on the front surface
of the lens while keeping a mean sphere value, in at least a portion of the lower part of the rear surface of the lens defined
by a circle of 15 mm diameter centered on a near vision reference point on the rear surface, which is less than or equal to
a first predetermined value (V1) set to 2.5 diopters or to 1.5 diopters;

determining said second intermediate value of regression (d2) as the strongest regression to be applied on the front surface
of the lens while keeping a mean sphere value, in at least a portion of the lower part of the front surface of the lens defined
by a circle of 12 mm diameter centered on a near vision reference point on the front surface, which is greater than or equal
to a second predetermined value (V2) set to ?0.5 diopter, to ?0.25 diopter, or to zero;

determining said third intermediate value of regression (d3) as the strongest regression to be applied on the front surface
of the lens while keeping an addition on the whole rear surface of the lens less than or equal to a third predetermined value
(V3) set to 6 diopters or to 5 diopters;

calculating the rear surface of the lens to meet input data relative to a wearer of the lens based on said value of regression
(d) determined in said determining step to obtain a calculated rear surface; and

machining the rear surface of the lens according to said calculated rear surface, wherein said first, second and third predetermined
values (V1, V2, V3) optimize the machining thereof.

US Pat. No. 9,557,577

METHOD OF PREPARING AN OPHTHALMIC LENS

1. A method for preparing an ophthalmic lens to be fitted into a rim of a spectacle frame, comprising:
an operation for determining the two-dimensional geometry of a surround profile of said rim;
a centering operation in which said surround profile is centered in a frame of reference related to the ophthalmic lens;
an operation for acquiring the geometry of at least one portion of an optical face of the ophthalmic lens by overlaying the
surround profile of the rim on the optical face of the lens and by contact or contactless probing of said surround profile
as overlaid on said optical face of the ophthalmic lens;

an operation for determining instructions for processing of the ophthalmic lens depending on the geometry and position of
the surround profile in the frame of reference related to the ophthalmic lens, and depending on the geometry of said portion
of said optical face of the ophthalmic lens; and

an operation for processing the ophthalmic lens according to said processing instructions,
wherein said acquiring operation comprises:
a step of calculating, depending on the two-dimensional geometry of said surround profile, two-dimensional coordinates of
a plurality of measuring points located on the optical face of the lens along two separate surround traces that are arranged
on both sides of said surround profile and that are chosen such that they define between each other a strip that bounds along
said surround profile; and

a step of examining said optical face of the ophthalmic lens in order to acquire the three-dimensional coordinates of said
measuring points,

and wherein said processing instructions are determined depending on the three-dimensional coordinates of said measuring points.
US Pat. No. 9,500,776

OPTICAL ARTICLE HAVING A DUAL LAYER TEMPORARY COATING

1. An optical article which is optically transparent comprising an organic or mineral glass substrate comprising on at least
one of its main surfaces an outer hydrophobic and/or oleophobic coating and in direct contact with the outer hydrophobic and/or
oleophobic coating a dual-layer temporary coating protecting said outer hydrophobic and/or oleophobic coating before and/or
during an edging process, wherein the dual-layer temporary coating is removable and consists of:
a first layer, in direct contact with the outer hydrophobic and/or oleophobic coating comprising halogenated olefin polymers
or polyurethanes, wherein the polyurethanes, if present, represent at least 80% by weight of the total weight of the first
layer; and

a second layer which is the outermost layer of the optical article, comprising a polymer or polymer mixture acting as a water
barrier deposited on the first layer, wherein the second layer comprises at least one vinyl polymer, polyepoxide, polyepisulfide,
polyester, polyether, polyester-ether, poly(meth)acrylate, polythio(meth)acrylate, styrene polymer, or cellulosic polymer

wherein the polymer of the first layer and the polymer of the second layer are different from each other.

US Pat. No. 9,482,884

METHOD OF DETERMINING AN OPHTHALMIC LENS

1. A method for determining an ophthalmic lens for an eye of a wearer, the method comprising the steps of:
measuring, on the wearer in binocular vision, three-dimensional coordinates of a center of rotation of the wearer's eye;
measuring at least one direction of gaze in a natural posture;
determining a desired position of the ophthalmic lens; and
calculating characteristics of the ophthalmic lens by using the coordinates measured for the center of rotation of the eye,
the determined position of the lens and the at least one direction of gaze measured in a natural posture, the characteristics
of the ophthalmic lens calculated by positioning a starting ophthalmic lens in the determined position and at least one of
modifying the starting ophthalmic lens by wavefront analysis or starting from the starting ophthalmic lens, optimizing using
ray tracing dependent on the coordinates measured for the center of rotation of the eye and the determined position of the
lens.

US Pat. No. 9,223,147

SPECTACLE LENS PROVIDING OPHTHALMIC VISION AND AN ADDITIONAL VISION

1. A method for producing a spectacle lens configured to provide a wearer of the lens with an ophthalmic vision and an additional
vision, said lens including: a front face, a rear face, a refringent medium, and an insert, said rear face being configured
to face an eye of a wearer for a position of use of said lens; the refringent medium being situated between the front and
rear faces; the insert being situated within the refringent medium and configured to deliver, between the front and rear faces
of the lens, through an output window of said insert toward the eye of the wearer, light forming an additional image visible
to the wearer in the position of use of the lens; the ophthalmic vision corresponding to an image formed by light having passed
in succession through the front face, a front portion of the refringent medium situated on a front side of the insert, the
insert or an intermediate portion of the refringent medium situated outside a peripheral edge of said insert, a rear portion
of the refringent medium situated on a rear side of the insert, and the rear face of the lens; and the additional vision corresponding
to the additional image formed by said light passing through the insert, the rear portion of the refringent medium and the
rear face of the lens; the method comprising:
obtaining an ophthalmic prescription for the wearer of the lens;
determining an additional prescription for said additional vision from the ophthalmic prescription and from a position of
the additional image;

determining a curvature value for the rear face of the lens corresponding to the additional prescription, at an additional
prescription point;

determining a curvature value for the front face of the lens at an ophthalmic prescription point, according to the ophthalmic
prescription and the curvature value of the rear face of the lens;

calculating additional curvature values for the rear face of the lens outside the additional prescription point, at least
inside an area of said rear face corresponding to the output window of the insert, designed so that said rear face area produces
a correction for the additional vision which corresponds to the additional prescription;

calculating additional curvature values for the front face of the lens outside of the ophthalmic prescription point, designed
so that said lens produces a correction for the ophthalmic vision which corresponds to the ophthalmic prescription, when the
rear face of the lens has the additional curvature values calculated for the rear face; and

producing the spectacle lens with the additional curvature values calculated for the front and rear faces.

US Pat. No. 9,122,080

OPHTHALMIC LENS HOLDER FOR A CENTERING DEVICE

1. An ophthalmic lens holder for a centering device, comprising:
a stand; and
at least three pads that rise up from the stand in order to present substantially coplanar free ends via which the pads are
designed to bear the ophthalmic lens,

wherein the holder has the least three through-apertures having axes substantially orthogonal to the plane of the free ends
of the three pads, which through-apertures emerge freely onto the front and back of the holder in order to be locatable by
the centering device.

US Pat. No. 10,088,695

EYEGLASSES FRAME COMPRISING EMBEDDED ELECTRONICS

Essilor International, C...

1. A method of manufacturing of a composite substrate having an embedded electronic device, the method comprising:providing a first substrate of cellulose acetate and a second substrate of cellulose acetate;
shaping at least one of the first substrate and the second substrate according to a first predetermined pattern to form a cavity for receiving the electronic device;
disposing the electronic device between the first substrate and the second substrate in said cavity;
providing a solvent of cellulose acetate in-between the first substrate and the second substrate and
maintaining the first substrate and the second substrate in contact together to form the composite substrate, wherein the electronic device is maintained between the first substrate and the second substrate,
wherein at least a part of a frame is designed on the composite substrate, wherein the part of the frame has a designed shape that is determined by taking into account the electronic device embedded in the composite substrate, wherein the at least one part of the frame is designed by referring to markings present on the substrate indicative of a feature of the electronic device before designing the part of the frame on the composite substrate, wherein the designed shape of the part of the frame and position of the frame in the composite substrate are determined by taking into account of a shape and a position of the electronic device in the composite substrate.

US Pat. No. 9,804,415

SECURED DATA COMMUNICATION IN A NETWORKED COMPUTER SYSTEM FOR PROVIDING OPTICAL LENSES

1. A method implemented by a processor through a network, for providing at least one optical lens adapted to a wearer, the
optical lens comprising a first part and a second part, the method comprising the steps of:
a) receiving, directly or indirectly via a manufacturing lab, from a first networked computer entity (PC1; PC3) located at a lens ordering side (LOS), a first set of data (S1), the first set of data (S1) comprising at least wearer's data and in particular wearer's prescription data,

b) sending a second set of data (S2) comprising at least an optical lens design information and the wearer's prescription data to a second networked computer
entity (PC2) located at a lens designing side (LDS), and receiving from the second networked computer entity (PC2) a third set of data (S3) comprising at least optical lens data (OLD) calculated from the second set (S2), wherein the optical lens data (OLD) comprises a first set of optical lens data (OLD1) related to the first lens part and a second set of optical lens data (OLD2) related to the second lens part, the first set of optical lens data (OLD1) and the second set of optical lens data (OLD2) defining together an optical function (OF) of the optical lens, wherein the optical function (OF) of the optical lens defines
optical and geometrical properties of the optical lens;

c) sending at least to a third networked computer entity (PC3), at a lens manufacturing lab (LMS), at least the first set of optical lens data (OLD1);

d) sending at least to a fourth networked computer entity (PC4), at a semi-finished lens manufacturing lab (SFLMS), at least the second set of optical lens data (OLD2), the first set of optical lens data (OLD1) and the second set of optical lens data (OLD2) defining together the optical function;
wherein the at least first and second optical lens data (OLD1, OLD2) are each at least partially modified by a masking function (ENCR; MOLD1, MOLD2) and wherein a masking function is applied to:
the first set of optical lens data so as to obtain a first modified set of optical lens data (MOLD1), and

to the second set of optical lens data so as to obtain a second modified set of optical lens data (MOLD2),

the first modified set of optical lens data (MOLD1) and the second modified set of optical lens data (MOLD2) defining together a same optical function as said optical function (OF) of the optical lens, and said optical lens are manufactured
at the semi-finished lens manufacturing lab (SFLMS) and at the lens manufacturing lab (LMS) using the first modified set of
optical lens data (MOLD1) and the second modified set of optical lens data (MOLD2) that together define the same optical function as said optical function (OF) of the optical lens.

US Pat. No. 9,709,823

METHOD FOR TRANSFORMING A PROGRESSIVE OPHTHALMIC SURFACE

1. A method for transforming an initial progressive ophthalmic surface which has to be manufactured by a manufacturing method,
the transformation method being implemented prior to an actual manufacture of the progressive ophthalmic surface and comprising:
a step of selecting a manufacturing method intended to be implemented on the basis of characteristics of the progressive ophthalmic
surface to be manufactured after the transformation method, in which said manufacturing method introduces a reproducible surface
defect;

a step of selecting a predictive model of said reproducible surface defect, the predictive model providing a value D of said
reproducible surface defect based on characteristics of the initial progressive ophthalmic surface intended to be manufactured;

a step of selecting an initial progressive ophthalmic surface S intended to be manufactured,
a step of determining, during which there is determined, by means of said predictive model, a surface defect value D as a
function of a value of said characteristics of the initial progressive ophthalmic surface to be manufactured, said surface
defect value D being the difference between a value of a surface parameter that the progressive ophthalmic surface would exhibit
if it were manufactured by said manufacturing method and a desired value for said surface parameter; and

a transformation step during which said initial progressive ophthalmic surface S is transformed into a transformed progressive
ophthalmic surface S* by compensating the surface defect value D determined during the determination step, such that the transformed
progressive ophthalmic surface S* subsequently manufactured by said manufacturing method conforms to the initial progressive
ophthalmic surface S and exhibits a value of the surface defect which is less than, as an absolute value, to said surface
defect value D.

US Pat. No. 9,671,617

METHOD FOR ESTIMATING A DISTANCE SEPARATING A PAIR OF GLASSES AND AN EYE OF THE WEARER OF THE PAIR OF GLASSES

1. A method for estimating an eye/spectacles distance, between a characteristic plane of a pair of spectacles and a characteristic
point of an eye of a wearer of said pair of spectacles, with the help of a determination device comprising an image sensor
and a calculation unit, the method comprising steps:
a) of acquisition by the image sensor of at least two distinct images of at least one part of the head of the wearer, in which
the head of the wearer exhibits various angular positions with respect to the image sensor around a pivoting axis which is
substantially parallel to said characteristic plane and which is substantially transverse to the optical axis of the image
sensor,

b) of determination, for each image acquired, of an angle of inclination of the head of the wearer with respect to the image
sensor, measured between the optical axis of the image sensor and a plane tied to the head of the wearer which is substantially
parallel to said pivoting axis and substantially orthogonal to said characteristic plane,

c) of acquisition of at least two predetermined simulated values of the eye/spectacles distance sought stored in read-only
memory of the calculation unit,

d) of calculation, for each image acquired and with each simulated value acquired, of a morphological distance between the
characteristic point of the eye of the wearer and the plane tied to the head of the wearer, as a function of said angle of
inclination, and

e) of selection, from among the simulated values of the eye/spectacles distance sought, of the value closest to the eye/spectacles
distance of the wearer, as a function of the head/plane distances calculated in step d).

US Pat. No. 9,585,552

DEVICE AND METHOD FOR MEASURING AT LEAST ONE OBJECTIVE OCULAR REFRACTION CHARACTERISTIC OF A PATIENT FOR A PLURALITY OF VISUAL RANGES

1. A binocular device for measuring at least one objective ocular refraction characteristic of a subject for a plurality of
vision distances, comprising:
an optical system for generating a focus of variable proximity, able to generate selectively a first target having a first
proximity value P1 and at least one second target having a second proximity value P2, said first target and said second target being centered on one and the same focus optical axis;

at least one light source able to generate at least one illuminating beam in the direction of the two eyes of the subject;
an image-capturing apparatus, said apparatus having a measurement optical axis aligned with a gaze axis of the subject, the
angle between the measurement optical axis and the focus optical axis being smaller than 10 degrees, said apparatus being
suitable for receiving an ocular refraction beam by refraction of the at least one illuminating beam in the eyes of the subject,
the image-capturing apparatus being suitable for capturing a first ocular refraction image of the two eyes when the first
target of proximity P1 is activated and at least one second ocular refraction image of the two eyes when the second target of proximity P2 is activated as a function of lowering of the gaze relative to the head of the subject; and

a processor suitable for receiving the first ocular refraction image and the second ocular refraction image in order to deduce
therefrom a measurement of at least one objective ocular refraction characteristic of the two eyes of the subject depending
on the first proximity value P1 and the second proximity value P2,

a case holding the focus-generating optical system, the at least one light source and the image-capturing apparatus,
the focus optical axis being inclined at an angle alpha to the horizontal, the angle alpha being comprised between +5 degrees
and +85 degrees when the case is placed on a horizontal surface, and

the image-capturing apparatus and the processor being suitable for measuring pupillary distances for the first proximity value
P1 and for the second proximity value P2 and/or at least one fitting parameter among height, pantoscopic angle, eye/glass distance and the position of the center
of rotation of the eye.

US Pat. No. 9,475,241

INFLATABLE MEMBRANE APPARATUS AND PROCESS FOR TRANSFERRING A COATING ONTO A SURFACE OF A LENS BLANK

1. An inflatable membrane apparatus for transferring a transferable coating onto a lens blank, the apparatus comprising:
a fluid accumulator having an upper and a lower face and a fluid entrance, said lower face being partly formed by an inflatable
membrane;

a trunconical part projecting outwardly from the lower face of the accumulator, wherein the greater base of the trunconical
part is closed by the lower face, and wherein the smaller base of the trunconical part forms a circular opening; and

a flexible carrier for receiving the transferable coating thereon and configured to be disposed between the inflatable membrane
and the lens blank;

where the inflatable membrane apparatus is configured such that, as pressurized fluid is introduced into the accumulator,
deformation of the inflatable membrane is guided by the trunconical part to urge the transferable coating against the lens
blank.

US Pat. No. 9,446,491

METHOD FOR TRIMMING A PRE-COATED OPHTHALMIC EYEGLASS LENS

18. A method of shaping an ophthalmic eyeglass lens to have a desired outline corresponding to an outline of a frame in which
the lens is to be mounted, comprising:
a) a step of providing the lens presenting two main curved optical working faces and comprising firstly a substrate made of
a first material and presenting two main curved faces corresponding to the two main faces of the lens, and secondly at least
one coating film made of a material distinct from that of said substrate, said coating film being previously secured on at
least one of the main faces of the substrate;

b) a step of forming the edge face of the coating film by cutting the lens by machining the lens with a first tool over at
least the thickness of the coating film previously secured on the substrate this cutting defining internally a working central
portion of the coating film that presents a reduced outline of smaller size than the desired outline, this reduced outline
being closed and determined as a function of said desired outline so as to be included within said desired outline;

c) a step of trimming the edge face of the substrate along said desired outline by machining by means of a second tool distinct
from the first tool, without machining the working central portion of the coating film; and

d) at least one subsequent step of finishing the edge face of the substrate by machining without machining the working central
portion of the coating film.

US Pat. No. 9,329,406

PROGRESSIVE OPHTHALMIC LENS

1. A progressive ophthalmic lens comprising:
a front surface and a rear surface, each surface having in each point an altitude, a mean sphere value, and a cylinder value,
the front surface of the lens comprising:
a far vision zone having a far vision reference point,
a near vision zone having a near vision reference point, and
a main meridian,
wherein the front surface is a regressive surface which is a continuous aspheric surface having a zone of decreasing mean
sphere value connecting the far vision zone and the near vision zone and has:

a sphere gradient normalized value of less than 7.50·10?1 mm?1 at any point in a central portion of the lens including a portion of the main meridian, the far vision reference point, and
the near vision reference point, and

a cylinder gradient normalized value of less than 1.45 mm?1 at any point in the central portion of the lens.

US Pat. No. 9,195,077

DEVICE FOR MEASURING A CHARACTERISTIC READING DISTANCE OF AN INDIVIDUAL

1. A device (500, 600) for measuring a characteristic reading distance of an individual, the device comprising:
a measurement support (510, 610) that includes a box (511, 611) carrying at least one ultrasound emitter member (520, 620) and at least one ultrasound receiver member (520, 620), at least one of these members, referred to as a main measurement member (520, 620) having a measurement element (522) in a cavity (521) in the box and possessing a measurement axis (AM5) on which emission or reception by the main measurement member (520, 620) has a maximum intensity, and being suitable for emitting or receiving ultrasound propagating in a measurement cone (CM5) centered on its measurement axis (AM5),

an electronic processor unit adapted, as a function of the ultrasound signal received by the receiver member (520, 620), to deliver a signal that is representative of the distance (D) between the measurement support (510) and an eyeglass frame (30) worn by the individual's head (10), and to deduce therefrom said characteristic reading distance,

means to verify that said eyeglass frame is situated at least in part in the measurement cone of said main measurement member,
a reading medium (530) presenting a plane display portion suitable for displaying signs, and

means (540) for releasably mounting the reading medium (530) on the measurement support (510, 610),

wherein said measurement support (510, 610) forms a docking station for the reading medium (530), the docking station including both a base (511, 640) suitable for standing in stable manner on a plane, and releasable mechanical connection means (540) suitable for co-operating with complementary connection means of the reading medium.

US Pat. No. 9,163,133

METHOD OF CONVERTING A POLYMERIZABLE COMPOSITION INTO THERMOPLASTIC POLYURETHANE OF IMPROVED YELLOWNESS INDEX AND ARTICLE OBTAINED BY THIS METHOD

1. A method of converting a polymerizable composition into thermoplastic polyurethane for use as an ophthalmic lens, said
method comprising:
combining precursors of the polyurethane with a plurality of additives including:
(i) an antioxidant which is benzenepropanoic acid, 3(1,1-dimethylethyl)-4-hydroxy-5-methyl-1,1?-[1,2-ethanediylbis(oxy-2,1-ethanediyl)]
ester is present in the amount of 0.1 to 1% by weight;

(ii) a light stabilizer component bis(1,2,2,6,6-pentamethyl-4-piperidinyl)-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butylmalonate
is present in the amount of 0.1 to 1% by weight; and

(iii) phenol, 2-(5-chloro-2H-benzotriazole-2-yl)-6-(1,1-dimethylethyl)-4-methyl present in the amount of 0.1 to 1% by weight;
and conducting a conversion step forming a thermoplastic polyurethane.

US Pat. No. 9,103,969

CURABLE COATING COMPOSITION MODIFIED WITH A CLEAVABLE SURFACTANT FOR IMPROVING ADHESION IN MULTILAYERED COATING STACKS

1. A process for preparing an optical article, comprising:
(a) providing an optical article comprising a substrate having an exposed surface,
(b) depositing onto said exposed surface of the substrate a first layer of a first curable composition comprising at least
one cleavable surfactant, wherein the cleavable surfactant is selected from the group consisting of:

(i) a compound of formula IX or X:

in which the polar head is a polar group, the hydrophobic tail is a hydrophobic group, R1, R2 and R3 independently represent
H, aryl, alkyl, halogen, a hydrophobic tail or a polar head or any group compatible with the conditions of a Diels-Alder cycloaddition
reaction;

(ii) a compound of formula XI:

in which R5, R6, R7 and R8 independently represent H, aryl, alkyl, halogen, or any group compatible with the conditions of
a Diels-Alder cycloaddition reaction, with the proviso that at least one of R5, R6, R7 and R8 is an alkyl group of formula
CmH2m+1, wherein m is an integer ranging from 6 to 24, the R4 groups independently represent hydrophilic groups, and n is
an integer ranging from 1 to 5; and

(iii) sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, or a mixture of both;
(c) curing at least partially said first curable composition, thereby forming a first coating,
(d) forming a second coating onto said first coating, and
(e) obtaining an optical article comprising a substrate successively coated with said first coating and said second coating,
said first coating adhering to said second coating,
wherein, after said first curable composition has been deposited onto the exposed surface of the substrate, and before step
(d), said optical article is subjected to a treatment step resulting in a cleavage of at least a portion of the cleavable
surfactant, andwherein no surface treatment with energetic species selected from ions, radicals, photons or electrons is performed on the
first coating before proceeding to step (d).

US Pat. No. 10,073,279

OPTICAL ARTICLE COMPRISING AN ANTIREFLECTIVE COATING WITH A LOW REFLECTION BOTH IN THE ULTRAVIOLET REGION AND IN THE VISIBLE REGION

ESSILOR INTERNATIONAL, C...

1. An ophthalmic lens comprising a substrate with a front main face and a rear main face, the rear main face being coated with a multilayered antireflective coating comprising a stack of at least one layer having a refractive index higher than 1.6 and of at least one layer having a refractive index lower than 1.5, wherein:the refractive index is expressed at a wavelength of 550 nm,
the mean reflection factor on the rear face in the visible region Rm is lower than or equal to 1.15%;
the mean light reflection factor on the rear face in the visible region Rv is lower than or equal to 1%;
the mean reflection factor RUV on the rear face between 280 nm and 380 nm, weighted by the function W(?) defined in the ISO 13666:1998 standard, is lower than 5%, for both an angle of incidence of 30° and for an angle of incidence of 45°;
the multilayered antireflective coating comprises from 3 to 7 layers;
the multilayered antireflective coating does not comprise any layer with a thickness higher than 15 nm based on indium oxide;the multilayered antireflective coating:does not comprise any MgF2 layer,
comprises at least one layer having a refractive index lower than 1.5 and a thickness ranging from 10 to 100 nm,
comprises at least one layer having a refractive index higher than 1.6 and a thickness ranging from 8 to 120 nm,
has a total thickness lower than 1 micrometer
and
the multilayered antireflective coating outer layer is a silica-based layer,wherein(a) the mean spectral reflection factor on the rear face for at least one wavelength in the 280-295 nm range for both an angle of incidence of 30° and an angle of incidence of 45° is higher than 5%, or(b) the mean spectral reflection factor on the rear face over at least 70% of the 280-290 nm wavelength range, for an angle of incidence of 15° is higher than 10%.

US Pat. No. 10,045,690

METHOD FOR DETERMINING WAVE-FRONT ABERRATION DATA OF A TO-BE-TESTED OPTICAL SYSTEM

Essilor International, C...

1. A method for determining wave-front aberration data of a to-be-tested optical system comprising the steps of:a) providing a wave-front sensing image of light received from the tested optical system;
b) providing a model representative of the optical system with at least an optical parameter representative of said model; and
c) optimizing a set of wave-front coefficient data and said at least optical parameter of said model according to a merit function, wherein the calculation of said merit function comprises the steps of:
generating a wave-front sensing modeled image of light received from said model by means of said at least optical parameter and said set of wave-front coefficient data; and
calculating a criteria based on shape parameter data of the wave-front sensing image and shape parameter data of the wave-front sensing modeled image, so as to obtain wave-front aberration data of the tested optical system,
wherein said wave-front sensing image comprises an array of sensed focus light spots;
wherein said wave-front sensing modeled image comprises an array of modeled focus light spots; and
wherein the calculation of the criteria comprises the step of calculating a difference at least between a shape parameter of the sensed focus light spots and of the modeled focus light spots.

US Pat. No. 9,778,399

COMPOSITION FOR TRANSPARENT ANTISTATIC COATING

1. A curable composition providing, upon curing, a transparent antistatic coating, said curable composition comprising:
at least one binder comprising at least one silane of formula (I)

wherein n=2 or 3, p=1 or 2, q=0 or 1 and n+p+q=4
X, identical or different, is a hydrogen atom, alkoxy group, halogen atom, siloxy group or silazane group;
R1, identical or different, is a C1-C10 linear or branched alkyl group wherein:

the alkyl group is substituted with a monocyclic or bicyclic heterocycle at a carbon atom, the heterocycle having a hetero
atom selected from oxygen or sulphur,

a carbon atom of the alkyl group may be replaced by an oxygen atom;
the alkyl group may be further substituted with an organic functional group;
R2, identical or different, is a C1-C10 linear or branched divalent alkylene group linked to the silicon atom and R1, in which a carbon atom of R2 may be replaced by an oxygen atom; and

R3 represent an alkyl group, an alkenyl group or an aryl group;

a salt (II) comprising an alkali cation and a counter ion which is the conjugate base of a superacid
Alkali+Superacid?  (II);

and
a Brønsted acid of molecular weight greater than or equal to 200 g/mol.

US Pat. No. 9,703,122

METHOD FOR DETERMINING AT LEAST ONE VALUE OF A PARAMETER FOR CUSTOMISING A VISUAL COMPENSATION DEVICE

1. A method for determining at least one value of a personalization parameter of a piece of vision-correcting equipment for
a user, employing an electronic terminal comprising a graphical interface, an image capturing apparatus comprising an image
sensor, and audiovisual communication means, the method comprising the following steps:
a) capturing at least one image or video sequence of the user by means of the image capturing apparatus;
b) communicating said at least one image or video sequence captured in step a) to a remote-assistance center located remotely
from the electronic terminal, the remote-assistance center comprising at least one checking terminal;

c) checking processing, by the remote-assistance center, of said at least one image or video sequence transmitted in step
b), in order to deduce therefrom, on account of a position, a posture or a sequence of movements of the user in front of the
image capturing apparatus, a captured image or video sequence correction or validation instruction;

d) communicating from the remote-assistance center to the electronic terminal of the user said correction or validation instruction;
e) the electronic terminal displaying or emitting a video or audio message informing the user of the validation of the image
or video sequence capture or requesting the user to position or move himself relative to the image capturing apparatus in
accordance with the correction instruction;

f) reiterating the preceding steps until a validated image or video sequence is obtained; and
g) determining at least one value of said personalization parameter depending on said captured and validated at least one
image or video sequence.

US Pat. No. 9,625,620

OPTICAL ARTICLE COATED WITH A SUB-LAYER AND WITH A HEAT-RESISTANT, MULTILAYERED ANTIREFLECTION COATING, AND METHOD FOR PRODUCING SAME

1. An optical article having antireflection properties, which comprises a substrate and, starting from the substrate:
a sub-layer comprising a SiO2-based layer, said SiO2-based layer having a thickness greater than or equal to 75 nm and being free from Al2O3, a ZrO2 layer with a thickness ranging from 10 to 40 nm, a SiO2/Al2O3 layer with a thickness ranging from 10 to 40 nm, a TiO2 layer with a thickness ranging from 40 to 150 nm, a ZrO2 layer with a thickness ranging from 10 to 30 nm, an electrically conductive layer with a thickness ran in from 0.1 to 30 nm
and a SiO2/Al2O3 layer with a thickness ranging from 40 to 150 nm; and

a multilayered antireflection coating comprising a stack consisting of at least one high refractive index layer and at least
one low refractive index layer,

wherein all the low refractive index layers of the antireflection coating comprise a mixture of SiO2 and Al2O3, and wherein the high refractive index layers of the antireflection coating either

(i) do not comprise a substoichiometric titanium oxide that absorbs in the visible region; or
(ii) do comprise a substoichiometric titanium oxide that absorbs in the visible region, but do not reduce the relative visible
light transmission factor (Tv) of said optical article by more than 10% as compared to a same article without any said layers
that comprise a substoichiometric titanium oxide and absorb in the visible region.

US Pat. No. 9,360,684

METHOD FOR DETERMINING TARGET OPTICAL FUNCTIONS

1. A non-transistory computer-implemented method for determining target optical functions for a pair of ophthalmic lenses
comprising a first lens for a first eye and a second lens for a second eye of a wearer of the pair of the ophthalmic lenses,
wherein a target optical function is a set of optical criteria values defined for given gaze directions, representing the
performance to be reached, the method comprising steps of:
generating a first target optical function for the first lens of the pair of the ophthalmic lenses based at least on data
relating to the first eye, wherein said data relating to the first eye are selected from monocular data linked to prescription
data for the first eye or a combination of prescription data, data linked to the first eye's biometry and binocular data;

creating an intermediate optical function for the second lens of the pair of the ophthalmic lenses based on a transformation
of the first target optical function,

wherein said transformation applies to the values of one optical criterion of the first target optical function, and wherein
said transformation is selected from linear transformations such as

shifts, including power shifts, and
homotheties; and
generating a second target optical function for the second lens of the pair of the ophthalmic lenses by modifying the intermediate
optical function based on the prescription data of the second eye.

US Pat. No. 9,335,002

TEMPORARY SUSPENSION ELEMENT

1. A temporary suspension element comprising:
a rectilinear guide with a central longitudinal axis having threading at one end, and having a cavity relative to an outside
sliding surface of said guide, said cavity being at a distance from the threaded end of the guide;

a transverse pin having a central longitudinal axis passing through the cavity, located on and perpendicular to the central
longitudinal axis of the guide; and

a catch having a longitudinal axis extending from a pivot point defined by the transverse pin to a distal end which rotates
around said transverse pin and can swing between a guiding position and a retaining position, the catch having a center of
gravity, wherein:

the catch in the guiding position is at least partially contained in the cavity, with the distal end of the catch being closer
than the transverse pin to the threaded end of the guide;

the catch in the retaining position swings out of the cavity relative to the guiding position, such that the distal end of
the catch protrudes more, relative to the outside sliding surface, in the retaining position than in the guiding position;

the retaining position of the catch is determined by the guide acting as a stop for the catch, so that an angle between the
central longitudinal axis of the guide and the longitudinal axis of the catch in the retaining position is less than 90° on
the side of the threaded end; and

the center of gravity of the catch is offset relative to the transverse pin, towards an opening of the cavity in the outside
sliding surface of the guide, so that when said element is vertically oriented with the threaded end of the guide upwards,
the weight of the catch causes said catch to swing into the retaining position.

US Pat. No. 9,307,899

PROCESS FOR DETERMINING A PAIR OF PROGRESSIVE OPHTHALMIC LENSES

1. A process for determining a pair of progressive ophthalmic lenses comprising the steps of:
determining a prescribed far vision mean power (PFV) for each lens of the pair;

determining a prescribed addition (A) for each lens of the pair;
determining laterality of a wearer;
defining a temporal side and a nasal side on each lens of the pair;
defining, on each lens being worn and for each gaze direction, a refractive power (P?,?) and a module of resulting astigmatism (Asr?,?), each gaze direction corresponding to a lowering angle (?) and to an azimuth angle (?);

defining a proximate vision gaze direction (?PV, ?PV) for each lens of the pair;

defining, for each lens of the pair, a temporal half-width field of refractive power (TP_LE, TP_RE) as the angular distance, at constant lowering angle (?), between the proximate vision gaze direction (?PV, ?PV) and a gaze direction (?PV, ?TP) on the temporal side of the lens where the refractive power reaches the value of the prescribed far vision mean power plus
three quarters of the prescribed addition (PFV+3/4*A);

defining, for each lens of the pair, a nasal half-width field of refractive power (NP_LE, NP_RE) as the angular distance, at constant lowering angle (?), between the proximate vision gaze direction (?PV, ?PV) and a gaze direction (?PV, ?NP) on the nasal side of the lens where the refractive power reaches the value of the prescribed far vision mean power plus
three quarters of the prescribed addition (PFV+3/4*A);

defining, for each lens of the pair, a temporal half-width field of module of resulting astigmatism (TA_LE, TA_RE) as the angular distance, at constant lowering angle (?), between the proximate vision gaze direction (?PV, ?PV) and a gaze direction (?PV, ?TA) on the temporal side of the lens where the module of resulting astigmatism reaches the value of one quarter of the prescribed
addition (A/4);

defining, for each lens of the pair, a nasal half-width field of module of resulting astigmatism (NA_LE, NA_RE) as the angular distance, at constant lowering angle (?), between the proximate vision gaze direction (?PV, ?PV) and a gaze direction (?PV, ?NA) on the nasal side of the lens where the module of resulting astigmatism reaches the value of one quarter of the prescribed
addition (A/4);

wherein the ratio of the difference over the sum of temporal and nasal half-width fields of refractive power ((TP_LE?NP_LE)/(TP_LE+NP_LE), (TP_RE?NP_RE)/(TP_RE+NP_RE)) and/or the ratio of the difference over the sum of temporal and nasal half-width fields of module of resulting astigmatism
((TA_LE?NA_LE)/(TA_LE+NA_LE), (TA_RE?NA_RE)/(TA_RE+NA_RE)) are determined for each lens of the pair based on the laterality of the wearer.

US Pat. No. 9,134,461

EDGING PROCESS OF LENS USING TRANSPARENT COATING LAYER FOR PROTECTING LENS

1. A process for edging a lens having an outer water-repellent layer, the process comprising forming a lens-protective transparent
coating layer on the surface of the outer water-repellant layer of the lens, edging the coated lens, and removing the lens-protective
transparent coating layer from the edged lens, wherein the lens-protective transparent coating layer comprises a fluorine-containing
elastomer and has a surface energy of less than 15 mJ/m2.

US Pat. No. 9,132,522

PROCESS FOR SURFACING A SURFACE OF A SPECTACLE LENS

1. A process for surfacing a surface (12) of a spectacle lens (10), comprising a step of determining a fixed rotation speed (Vrot) of said spectacle lens (10) from geometric characteristics of said surface (12), characterized in that the step of determining the rotation speed (Vrot) comprises the following steps:
generating (102), from geometric characteristics of said surface (12), a file of altitude geometric values (Zj) of said surface (12), which file is centered on an altitude geometric value (Z0) at a preset reference point (PRP);

determining (103) a value representing the largest difference (MaxHk) between altitude geometric values (Zj) on said surface (12);

deducing (107) the rotation speed (Vrot) from said value of the largest difference (MaxHk) between altitude geometric values (Zj) on said
surface (12), and from a cylinder geometric value (FV Torus) at a predetermined far-vision control point; and

surfacing the surface (12) of the spectacle lens (10), using a polishing tool based on the deduced rotation speed.

US Pat. No. 9,052,253

METHOD OF DETERMINING AT LEAST ONE REFRACTION CHARACTERISTIC OF AN OPHTHALMIC LENS

1. A method of determining at least one refractive characteristic of an ophthalmic lens (20), the method comprising the steps of:
a) placing the lens (20) on a support (10) having at least one prop element (12, 13, 14) in contact with one of the main faces of the lens (20) in a contact zone of area that is small relative to the area of the main faces of said lens (20);

b) lighting the lens (20) placed on its support (10) with the help of lighting means (40); and

c) using image capture means (30) to capture an image of the prop element (12, 13, 14) of the support (10) lighted by light rays (R1, R2) that come from said lighting means and that have passed through the lens (20), the image being captured in an image capture plane that is substantially perpendicular to an optical axis (AO) of the lens
(20);

the method comprising the following steps:
d) in said image, identifying the image of said prop element (12, 13, 14) of the support (10) and determining at least one characteristic representative of the geometry of the image of said prop element; and

e) from said characteristic representative of the geometry of the image of said prop element (12, 13, 14), deducing said looked-for refractive characteristic.

US Pat. No. 10,307,053

METHOD FOR CALIBRATING A HEAD-MOUNTED EYE TRACKING DEVICE

Essilor International, C...

1. A method for calibrating a head-mounted eye tracking device, the method comprising:acquiring eye data relating to a position of an eye of a wearer using at least one camera arranged on a spectacle frame of the head-mounted eye tracking device while having the wearer of the head-mounted eye tracking device look in a direction of reference;
associating the eye data acquired during the acquiring with a gaze direction corresponding to the direction of reference using a processor of the head-mounted eye tracking device;
recording the associated eye data and the gaze direction in a memory of the head-mounted eye tracking device,
providing a calibration support comprising at least a visual reference element to the wearer wearing the head-mounted eye tracking device; and
placing the calibration support between at least one eye of the wearer and a visual environment of the wearer in a known position relative to the wearer's eye and to the head-mounted eye tracking device so as to define with the visual reference element the direction of reference,
wherein the head-mounted eye tracking device comprises ophthalmic lenses mounted on the spectacle frame of the head-mounted eye tracking device, and the gazing direction corresponding to the direction of reference is determined based on a dioptric function of the ophthalmic lenses, and
wherein, during the placing, the calibration support is placed on at least one surface of at least one of the ophthalmic lenses and the gazing direction corresponding to the visual reference element is determined based on the dioptric function of the ophthalmic lenses.

US Pat. No. 10,139,636

METHODS FOR AUGMENTED REALITY

Essilor International, C...

1. A method to determine a value of a virtual distance of visualization by a wearer of computer-generated information content displayed by a head-mounted display device, wherein said method comprises the steps of:(i) determining a value of comfort amplitude of accommodation of the wearer by first determining a maximal amplitude of accommodation at a punctum proximum defining the closest visible point for the wearer, comprising:
computing said value of comfort amplitude of accommodation based upon an age of the wearer, or
performing one or more measurements of said value of comfort amplitude of accommodation, by first providing as a measured distance a maximal amplitude of accommodation at a punctum proximum defining the closest visible point for the wearer;
(ii) assessing the wearer's accommodative facility under dynamic test conditions, by switching between a visualization of a first display and a visualization of a second display by the same wearer's eye, wherein the second display is situated within the wearer's comfort amplitude of accommodation, comprising:
(ii-a) setting a first value of visualization distance of the first display;
(ii-b) setting a second value of visualization distance of the second display situated within the wearer's comfort amplitude of accommodation; and
(ii-c) assessing the wearer's ability to accommodate during switching for the same wearer's eye between the visualization of the first display situated at a distance having the first value, and the visualization of the second display situated at distance having the second value; and
(iii) determining a suitable value of the virtual distance based on the results of steps (i) and (ii).

US Pat. No. 9,976,867

NAVIGATION METHOD BASED ON A SEE-THROUGH HEAD-MOUNTED DEVICE

Essilor International, C...

1. A navigation method for a wearer of a see-through head mounted device, the method comprising:a wearer visualization parameter providing step, during which at least one wearer visualization parameter relating to an eye condition of the wearer is received;
a geo-position determining step, during which the geo-position of the wearer along a route is determined;
a geo-position comparing step, during which the geo-position of the wearer determined during the geo-position determining step is compared to stored geo-positions along the route; and
a navigation visual aid function adapting step, during which upon matching of the geo-position of the wearer with one of the stored geo-positions, the navigation visual aid function is adapted based on both the wearer visualization parameter and the geo-position of the wearer, wherein the navigation visual aid is provided by the see-through head mounted device.

US Pat. No. 9,958,706

TINTED OPTICAL ARTICLE

1. A tinted optical article comprising an optical substrate with an optical filter, wherein:the optical article has a front and rear face, the rear face configured to be located proximate to a wearer eye,
the optical filter is configured to selectively emit light in at least one selected range of wavelengths of light in the visible spectrum of 460 nm to 530 nm, allowing retinal exposure of a wearer eye located proximate to the rear face of the optical article to said at least one selected range of wavelengths of light without impairing the tint of the optical article, and
the optical filter is configured to selectively and substantially reflect the selected range of wavelength of light that impinges the rear face of the optical article in the direction of said wearer eye such that the optical filter emits the selected range of wavelength of light to said wearer eye.

US Pat. No. 9,824,087

METHOD FOR DESIGNING A MOULD FOR CASTING A SEMI-FINISHED OPHTHALMIC LENS BLANK AND COMPUTER PROGRAM PRODUCT FOR CARRYING OUT SAID METHOD

1. A method for designing a mould for casting a semi-finished ophthalmic lens blank, the method comprising the steps of:
determining a closed curve representative of a geometry of a gasket to be used in combination with the mould with the closed
curve being at a periphery of mould, wherein the determined closed curve corresponds to a desired shape of an edge of the
mould;

using an optimization process with desired optical properties of the semi-finished ophthalmic lens blank to be cast in the
mould and the determined closed curve as inputs of the optimization process, designing a surface of the mould so that said
surface of the mould is regressive and substantially fits the determined closed curve with a distance between each point of
the determined closed curve and said surface of the mould being less than 0.1 mm, wherein a distance between an outer edge
(304) of an optically usable cavity area (306) of the mould and an edge of an outermost perimeter (302) of the mould is constant; and

manufacturing the mould with the designed surface.
US Pat. No. 9,791,597

CARBON NANOTUBE-BASED CURABLE COATING COMPOSITION PROVIDING ANTISTATIC ABRASION-RESISTANT COATED ARTICLES

1. A curable composition, providing, upon curing, an abrasion-resistant, transparent, antistatic coating, wherein the abrasion
resistance is characterized by a Bayer value greater than 5, and wherein the coating comprises:
a) carbon nanotubes, and
b) a binder comprising at least one compound of formula:
Rn?YmSi(X)4-n?-m  (I)
or a hydrolyzate thereof, in which the R groups are identical or different and represent monovalent organic groups linked
to the silicon atom through a carbon atom, the Y groups are identical or different and represent monovalent organic groups
linked to the silicon atom through a carbon atom and containing at least one epoxy function, the X groups are identical or
different and represent hydrolyzable groups or hydrogen atoms, m and n? are integers such that m is equal to 1 or 2 and n?+m=1
or 2; and
c) SiO2 nanoparticles having a diameter of greater than or equal to 25 nm;
wherein the curable composition does not comprise a compound of
Rn?Si(Z)4-n  (II)
or a hydrolyzate thereof, in which the R groups are identical or different and represent monovalent alkyl groups, the Z groups
are identical or different and represent hydrolyzable groups or hydrogen atoms, and n is an integer equal to 0, 1, or 2.

US Pat. No. 9,785,030

ELECTROCHROMIC COMPOSITION

1. An electrochromic composition comprising:
at least one reducing compound; and
at least two electrochromic oxidizing compounds,wherein said electrochromic oxidizing compounds have similar oxydo-reduction potentials, and are selected from viologen derivatives
of formulae (I) and (II):
wherein:
R1 and R2 are each independently selected from optionally substituted phenyl groups;

R3, R4, R5 and R6 are each independently selected from H, alkyl, alkoxy, alkylthio, haloalkyl, haloalkoxy, haloalkythio, polyakylenoxy, alkoxycarbonyl,
aryl, substituted aryl, heteroaryl and substituted heteroaryl, wherein the alkyl group may be substituted by one or more substituents
independently selected from alkoxy, cycloalkyl, aryl, substituted aryl, heteroaryl and substituted heteroaryl;

n, p, q and r are each independently an integer from 0 to 4, wherein when n, p, q or r is two or more, each of the R3, each of the R4, each of the R5 or each of the R6 may be identical or different;

A and B are respectively selected from nitrogen and —N+(R7a)—, and from nitrogen and —N+(R7b)—, wherein R7a and R7b are independently selected from:

alkyl which may be substituted by one or more groups independently selected from halogen, alkoxy, cycloalkyl, vinyl, allyl,
aryl, substituted aryl, heteroaryl and substituted heteroaryl;

aryl and heteroaryl which may be both substituted by one or more groups independently selected from:
halogen, cyano, nitro, alkyl, haloalkyl, arylalkyl, cycloalkyl, cycloalkylalkyl and heterocycloalkylalkyl, alkenyl, alkynyl,
allyl, vinyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, —N(aryl)2, —N(aryl)CO(aryl), —CO-aryl and —CO-substituted aryl;

—OR8, —S(O)R8, —S(O2)R8, —S(O2)NR8R9, —NR8R9, —NR8COR9, —NR8CO(aryl), —NR8aryl, —CH2OR8, —CH2SR8, —CH2R8, —CO—R8 and —CO2R8 wherein R8 and R9 are independently selected from H, alkyl, haloalkyl, arylalkyl, cycloalkyl, cycloalkylalkyl and heterocycloalkylalkyl;

—S(O2)NR10R11 and —NR10R11, wherein R10 and R11 form together with the nitrogen atom to which they are linked a saturated 5 to 7 membered heterocycloalkyl which may comprise
in addition to the nitrogen atom one further heteroatom selected from oxygen, nitrogen and sulphur, and which may be optionally
substituted by one or two groups independently selected from halogen, —R8, —OR8, and —NR8R9, wherein R8 and R9 are as defined above;

—V—W—R12 wherein:

V is selected from oxygen, —N(R8)—, sulphur, —S(O)— and —S(O2)— wherein R8 is as defined above;

W is alkylene, which may be substituted by one or more groups independently selected from halogen and alkoxy; and
R12 is selected from —OR8, —NR8(alkyl) and —SR8 wherein R8 is as defined above; and

—OC(O)—R13 wherein R13 is selected from alkyl, haloalkyl, alkenyl, —W—R12, and aryl group which may be substituted by 1 to 4 groups selected from halogen, —R8, —OR8, —SR8, —NR8R9, —NR10R11, —CO—R8, C(O)OR8, wherein R8, R9, R10, R11, R12 and W are as defined above;

Z is selected from:
alkylene;
cycloalkylene; and
a bivalent groups of formula —R14—Y—R15—, wherein:

R14 and R15 are each independently selected from single bond, alkylene and cycloalkylene, and

Y is selected from arylene, cycloalkylene, heteroarylene, arylene-arylene or arylene-CR?R?-arylene wherein R? and R? form
together with the carbon to which they are linked a carbocyclic group;

wherein said alkylene, cycloalkylene, arylene, heteroarylene and carbocyclic groups may be substituted by one or more substituents
selected from halogen, alkyl, alkoxy, alkylthio, hydroxyalkyl, acyloxy, cycloalkyl, aryl, substituted aryl, aryloxy heteroaryl
and substituted heteroaryl;

m is 2 if A and B are nitrogen, 3 if one of A and B is nitrogen and the other is not nitrogen, and 4 if both A and B are not
nitrogen;

X? is a counterion;

at least one of the viologen derivatives is selected from compounds of formula (I); and
at least one of the viologen derivative is selected from compounds of formula (III) or formula (IV):

wherein Z, and X? are as defined in formula (II), and R16 and R17 are independently selected from substituted phenyl groups of formula (VI):


wherein Ra and Rb are independently selected from H, halogen, cyano, nitro, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, alkylthio, acyl,
aroyl, alkoxycarbonyl, cycloalkyl, allyl, aryl, benzyl, and heteroaryl provided that at least one of Ra and Rb is not H


wherein R4, R5, Z, A, B, m and X? are as defined in formula (II) and at least one of R4 and R5 is not H.

US Pat. No. 9,733,489

METHOD FOR PROVIDING A PERSONALIZED SPECTACLE LENS OPTICAL SYSTEM FOR A WEARER

1. A method at least partly implemented by computer means for providing a personalized optical system for a wearer wherein
the optical system characterizes an ophthalmic lens for said wearer according to his prescription data, the method comprising
the steps of:
a) providing a visual performance level (VPL) value of at least one eye of the wearer, with the provision that prescription
data (Rx) consisting of sphere, cylinder, axis, addition, prism are not defined as a visual performance level;

b) providing a set of rules linking at least the visual performance level of step a) with at least one optical criterion chosen
from at least one of the two following optical criteria groups:

central vision optical criterion (CVOC) group consisting of prismatic deviation in central vision, ocular deviation, object
visual field in central vision, image visual field in central vision, and magnification in central vision;

peripheral vision optical criterion (PVOC) group consisting of pupil field ray deviation, object visual field in peripheral
vision, image visual field in peripheral vision, prismatic deviation in peripheral vision, and magnification in peripheral
vision; and

c) calculating by computer means the physical and geometrical parameters of the personalized optical system that meets the
prescription data of the wearer or selecting the personalized optical system in an optical systems data base comprising a
plurality of optical systems that meet the prescription data of the wearer, so that to meet the set of rules of step b),

wherein the rules of the set of rules refer to a link between at least a visual performance level and at least one optical
criterion, and to a relationship between the said visual performance level and the said optical criterion.

US Pat. No. 9,723,982

METHOD FOR DETERMINING THE DOMINANT EYE

1. A method for determining the dominant eye of an individual, comprising the following steps:
positioning the individual in front of an apparatus designed to acquire at least one frontal image of said individual, then
to process said image and lastly to reconstruct information allowing the individual to ascertain their dominant eye;

viewing, by means of a sighting device equipped with an optical window, a target that is identifiable and discernible relative
to the apparatus, this viewing being carried out through said window and with both eyes open, the dimensions of said window
being such that they do not allow the individual to see said target with both eyes at the same time;

acquiring, using the apparatus, at least one image, or at least a first and second image, wherein said at least one image,
or together, said at least first and second image, provide imaging of at least the position of the two eyes of the individual
and of the optical window to be seen;

calculationally processing said at least one image, or said at least a first and second image, the calculations taking into
account the position of a central point located between the two eyes of the individual, the position of the target and the
position of the window; and

reconstructing, using the apparatus, the information indicating the dominant eye of the individual, said information being
derived from the calculational processing.

US Pat. No. 9,726,572

METHOD AND SYSTEM FOR IDENTIFICATION OF A GIVEN GEOMETRICAL FEATURE OF AN OPTICAL COMPONENT

1. A method for identification of a given geometrical feature of an optical component, said method comprising:
providing (32) the optical component (12), said optical component (12) selected from the group consisting of an ophthalmic lens and a semi-finished ophthalmic lens blank, and said optical component
(12) composed of an organic material that emits light at an emission wavelength ?e when illuminated by an illumination wavelength ?i, said emission wavelength ?e being different from said illumination wavelength ?i;

illuminating (34, 74) a surface (16, 64) of the optical component with an incident light beam comprising at least light at the illumination wavelength but devoid
from the light at the emission wavelength, said surface of the optical component being illuminated in an illumination direction
with the incident light beam having the form of a sheet of light (56) substantially perpendicular to said surface of the optical component;

collecting (36, 76) light emitted at the emission wavelength by the illuminated surface of the optical component in a viewing direction to build
an image of said surface, an angle between the illumination direction and the viewing direction being substantially between
5° and 90°; and

processing said image by implementing computer means that applies metrics to compare the image with reference data that are
specific to the given geometrical feature and produces and stores an identification output of said given geometrical feature
that distinguishes between single vision lenses, bifocal lenses, trifocal lenses, and progressive addition lenses,

wherein the processing of said image produces and stores a profile of a curve that is formed by an intersection of the sheet
of light (56) and the illuminated surface of the optical component, the identification output of said given geometrical feature being
produced from the profile of the curve, and the processing includes a calculation where the angle between the illumination
and viewing directions is used to determine and store an exact value of at least one curvature radius of the produced profile
of the curve.

US Pat. No. 9,709,707

OPTICAL ARTICLE CONTAINING SELF-HEALING AND ABRASION-RESISTANT COATINGS

1. An optical article, comprising:
a transparent optical polymer substrate;
a transparent intermediate abrasion-resistant coating obtained from at least one epoxysilane; and
a transparent outer coating comprising a polythiol-ene matrix, said polythiol-ene matrix having a glass transition temperature
in the range from 40° C. to 70° C.

US Pat. No. 9,671,618

METHOD OF DETERMINING OPTICAL PARAMETERS OF AN OPHTHALMIC LENS

1. A method for determining the values of a set of n optical parameters (P1, P2, . . . , Pn) of an ophthalmic lens to be manufactured, n being an integer greater than or equal to 1, the method comprising:
an ophthalmic lens data providing step during which data representing an ophthalmic lens is provided, including data corresponding
to a surface of the ophthalmic lens;

an ophthalmic lens manufacturing step during which an ophthalmic lens is manufactured, the ophthalmic lens comprising at least
two optical surfaces at least one of which is manufactured based on the data of the corresponding surface of the ophthalmic
lens;

an optical surface measuring step during which the at least one manufactured surface of the ophthalmic lens is measured;
a surface errors determining step during which a set of m surface error parameters (?1, ?2, . . . , ?m) is determined, m being an integer greater than or equal to 1, the surface error parameters representing the differences
in position and/or shape of the measured optical surface and the corresponding surface of the ophthalmic lens; and

an optical parameter determining step during which each optical parameter of the set of optical parameters is determined by:
with Pi the value of the ith optical parameter of the manufactured optical lens, Pi,0 the value of the ith optical parameter of the ophthalmic lens to be manufactured,
the value of the derivative of Pi with respect to the jth surface error parameter ?j on the surface and ??j the value of the jth surface error parameter, and Ai a combination of terms of order greater or equal to 2 for each Pi.

US Pat. No. 9,534,160

METHOD FOR MANUFACTURING A SUBSTRATE COATED WITH MESOPOROUS ANTISTATIC FILM, AND USE THEREOF IN OPHTHALMIC OPTICS

1. An article comprising a substrate having a main surface coated with a mesoporous antistatic coating, said coating having
a refractive index lower than or equal to 1.45, and a silica based matrix functionalized by ammonium groups, the matrix having
a hydrophobic character, wherein said coating is obtained by:
a) preparing a precursor sol of a mesoporous antistatic coating comprising:
at least one inorganic precursor agent A selected from compounds of formula:
Si(X)4
wherein the X groups independently are hydrolyzable groups or a hydrolyzate of such precursor agent;
at least one precursor agent B selected from organosilanes comprising:
a silicon atom carrying at least two hydrolyzable groups; and
at least one ammonium group;
or a hydrolyzate of such precursor agent;
at least one organic solvent, at least one pore-forming agent, and water;
the B compound/A compound molar ratio ranging from 0.1 to 0.8;
b) depositing the precursor sol to form a precursor sol film onto a main surface of the substrate;
c) consolidating the deposited film;
d) removing the pore-forming agent from the film resulting from the previous step; and
e) recovering a mesoporous antistatic coating having a refractive index lower than or equal to 1.45;and further by:
(i) treating the film after step b) or after step c), with at least one hydrophobic reactive compound carrying at least one
hydrophobic group; and/or

(ii) introducing at least one hydrophobic precursor agent carrying at least one hydrophobic group into the precursor sol before
the step b) of depositing the precursor sol film.

US Pat. No. 9,513,493

OPHTHALMIC LENS SUPPLY SYSTEM AND RELATED METHODS

ESSILOR INTERNATIONAL, C...

1. A computer-implemented method for manufacturing a spectacle multifocal progressive ophthalmic lens intended to be worn
by a wearer, wherein said wearer was issued a prescription containing prescription data, said method comprising:
a step of providing data on the wearer's handedness, and
a step of determining the ophthalmic lens, wherein the step for determining the ophthalmic lens takes into account the provided
data on the wearer's handedness and is carried out by:

an optical optimization that comprises:
1) a step of selecting an ergorama,
2) a step of defining a target optical function for said lens as a function of the wearer's prescription data,
3) a step of carrying out optimization by:
a) selecting an initial lens,
b) defining a current lens, a current optical function being defined for the current lens, the current lens being initially
defined as the initial lens,

c) carrying out an optical optimization for minimizing the difference between the current optical function and the target
optical function,

wherein said ergorama selected in step 1) is handedness-dependent and/or the target optical function defined in step 2) is
designed as a function of the wearer's handedness,

and
a step of manufacturing the ophthalmic lens based on the determined ophthalmic lens,
wherein the step 2) of defining said target optical function comprises at least one step of:
asymmetrizing as a function of the wearer's handedness the nasal/temporal field half-widths of one or more of the following:
the near-vision zone with respect to a proximate-vision gaze direction,
the intermediate-vision zone with respect to the meridian line, and
the distant-vision zone with respect to a distant-vision gaze direction, or
asymmetrizing at least one optical parameter of the target optical function between the nasal part and the temporal part of
the lens as a function of the wearer's handedness,

wherein said optical parameter is selected from:
any one of central vision optical criteria selected from the group comprising: power in central vision, astigmatism in central
vision, high order aberration in central vision, acuity in central vision, prismatic deviation in central vision, ocular deviation,
object visual field in central vision, image visual field in central vision, magnification in central vision;

any one of peripheral vision optical criteria selected from the group comprising: power in peripheral vision, astigmatism
in peripheral vision, high order aberration in peripheral vision, pupil field ray deviation, object visual field in peripheral
vision, image visual field in peripheral vision, prismatic deviation in peripheral vision, magnification in peripheral vision;

any one of global optical criteria selected from the group comprising: magnification of the eye, temple shift,
any one of surface criteria selected from the group comprising: front or back mean curvature, front or back minimum curvature,
front or back maximum curvature, front or back cylinder axis, front or back cylinder, front or back mean sphere, front or
back maximum sphere, front or back minimum sphere, and

a value selected from a maximal value, a minimal value, a peak-to-valley value, a maximal gradient value, a minimal gradient
value, a maximal slope value, a minimal slope value, and an average value of any one of the preceding criteria,

in one or more useful zones of the lens for near-vision, distant-vision and intermediate-vision.
US Pat. No. 9,507,171

METHOD FOR TINTING AN OPTICAL FILM BY THERMAL TRANSFER PRINTING

1. A method for tinting optical films comprising the following successive steps:
(a) coating onto an optical film a liquid composition including,
1 part of cellulose acetate butyrate (CAB);
0.1 to 2 parts by weight, of dicyclohexyl phthalate;
0.1 to 1 part by weight, of isocyanato-alkyltrialcoxysilane;
at least 0.5 moles of H2O per mole of hydrolysable alcoxy groups of isocyanatoalkyltrialcoxysilane; and

a water-miscible organic solvent,
forming a dried image-receiving CAB layer on the optical film by drying the coated compositi
(c) thermal transfer printing on the dried image-receiving CAB layer with a sublimation dye;
(d) transferring the sublimation dye from the image-receiving CAB layer to the underlying optical film by a thermal treatment;
and

(e) removing the image-receiving CAB layer by a suitable solvent.
US Pat. No. 9,494,713

OPTICAL ARTICLE COMPRISING A TEMPORARY ANTIFOG COATING BASED ON SORBITAN SURFACTANTS

1. An optical article comprising a substrate having at least one main surface coated with an antireflection coating and, directly
contacting said antireflection coating, a precursor coating of an antifog coating obtained through the grafting on said antireflection
coating of at least one compound B bearing a polyoxyalkylene group, said coating precursor of the antifog coating being coated
with a surfactant film so as to form an antifog coating, characterized in that said surfactant film contains at least one
surfactant A having a sorbitan ring with n of its four hydroxyl groups functionalized with the same or different OH-terminated
polyoxyalkylene groups, and p of its four hydroxyl groups functionalized with the same or different R1 groups of formula:
—(RdO)z—(Y)n2—R?

in which Rd is an alkylene group, z is an integer?1, Y is a divalent group, n2 is 0 or 1 and R? is a saturated hydrocarbon group having
from 12 to 19 carbon atoms, n and p being integers such that n=2 or 3 and p=1 or 2 with n+p=4.

US Pat. No. 9,249,136

3H-NAPHTHO [2,1-B] PYRANS AS PHOTOCHROMIC DICHROIC DYES AND OPTICAL ARTICLE CONTAINING THEM

Alphamicron, Incorporated...

1. A naphthopyran compound represented by the formula (I):
wherein:
n1 is an integer comprised from 0 to 5 inclusive;

n2 is an integer comprised from 0 to 5 inclusive;

p is an integer comprised from 0 to 5 inclusive;
m is an integer comprised from 0 to 4 inclusive;
q is an integer comprised from 0 to 5 inclusive;
R1 and R2, identical or different, independently from each other, a group halogen, —Ra, —OH, —ORa, —SH, —NH2, —NRaRa1, —NRbRc, —CO—Ra, —O—CO—Ra and —CO2Ra1, wherein:

Ra is a linear or branched (C1-C18) alkyl group or a linear or branched (C1-C18) perfluoroalkyl group;

Ra1 is a hydrogen, linear or branched (C1-C18) alkyl group and linear or branched (C1-C18) perfluoroalkyl group;

wherein Rb and Rc,

together and in combination with the nitrogen atom, represent a saturated 5 to 7 membered heterocyclic group which comprises
optionally one additional heteroatom selected from O, N or S, and which may be optionally substituted by a halogen, Ra, —OH, —ORa, —NH2, or —NRaRa1, wherein Ra and Ra1 are as defined hereinbefore;

or together and in combination with the nitrogen atom and the adjacent phenyl group form a heterocyclic group of formula (A):

R3 is a halogen, —Ra, —OH, —ORa, —SH, —SRa, —NH2, and NRaRa1, wherein Ra and Ra1 are as defined hereinbefore;

R4 is a halogen, —Ra, —OH, —ORa, —SH, —SRa, —NH2, —NRaRa1, —CO—Ra, or —CO2Ra1, located at the para-position of the phenyl group, wherein Ra and Ra1 are as defined hereinbefore;

R5 is;

a halogen, —Ra, —OH, —ORa, —SH, —SRa, —NH2, or —NRaRa1, wherein Ra and Ra1 are as defined hereinbefore,

or when q is equal to 2 and then two R5 substituents are located onto two adjacent carbon atoms selected from C-7, C-8, C-9 and C-10 of the naphtho[2,1-b]pyran group,
they may further represent together a group —O—(CH2)q1—O— wherein q1 represents an integer comprised from 1 to 3 inclusive.

US Pat. No. 9,223,151

METHOD FOR DETERMINING READING DISTANCE

1. A portable reading tablet for implementing a method for determining reading distance, said tablet comprising;
a face intended for reading; and
at least one marker for pinpointing the spatial location of said tablet, said at least one marker being configured to allow
the tablet to be located even under low-luminosity conditions, wherein said tablet has a reading first face extended by a
second face inclined at an angle of 10° to 80° relative to said first face, and in that said second face has three markers,
one having a frontal position, and two others having lateral positions, said three markers allowing the position of said tablet
to be pinpointed in space.

US Pat. No. 10,073,316

ACHROMATIC PHASE MODULATOR AND OPTICAL DEVICE

Essilor International, C...

1. An achromatic phase modulator that modulates phase of a linearly polarized light and outputs the linearly polarized light having undergone phase modulation, comprising:at least two liquid crystal elements disposed in series on a light path of the linearly polarized light, which are constituted with liquid crystal materials with refractive index wavelength dependence characteristics thereof different from each other; and
a control unit for applying drive electric signals individually to the liquid crystal elements so as to achieve achromatic phase modulation for the linearly polarized light, wherein
in each liquid crystal element, an alignment direction of liquid crystal molecules therein can be altered between a first alignment direction substantially parallel to a direction in which the linearly polarized light advances, and a second alignment direction substantially parallel to the polarization direction of the linearly polarized light, in a plane including the first alignment direction and the second alignment direction, in correspondence to the drive electric signal applied to the liquid crystal element, and
the polarization direction of the linearly polarized light entering the phase modulator coincides with the polarization direction of the linearly polarized light exiting the phase modulator.

US Pat. No. 9,977,259

METHOD OF CONTROLLING A PROGRAMMABLE LENS DEVICE

Essilor International, C...

1. A method of controlling a programmable lens device comprising a programmable lens and an optical function controller, the programmable lens having an optical function and extending between at least one eye of a wearer and a real world scene when the programmable lens device is used by the wearer, and the optical function controller being arranged to control the optical function of the programmable lens, the method comprising:an initializing step during which the optical function of the programmable lens device is initialized based on user data comprising at least the wearer's ophthalmic prescription;
an optical function data receiving step during which optical function data relating to the optical function of the programmable lens is received by the optical function controller; and
an optical function modifying step during which the optical function of the programmable lens is modified by the optical function controller based on the optical function data.

US Pat. No. 9,861,274

METHOD FOR ASSISTING VISUAL EXPLORATION FOR AN INDIVIDUAL SUFFERING FROM A RETINAL CONDITION RESULTING IN A SCOTOMA

1. A method (S) for assisting visual exploration of a digital image (I) on a display device by a user afflicted with a retinal
pathology manifested by a scotoma, the digital image being composed of a matrix of points which is segmentable into zones,
the method comprising the steps of:
recognizing (S10), using shape recognition software, at least one object contained in an object zone (ZO) of the digital image;

determining (S30) a blind zone (Z1) in the image, corresponding to a position of the scotoma in the field of vision of the user looking at the image;

in case of detection of a proximity of the blind zone and of the object zone, applying a processing of the image, for highlighting
(S70, S90) the object zone for the user;

determining (S50) a zone of interest (Z2) comprising at least one object zone (ZO), according to a criterion of positioning of the blind zone (Z1) on the digital image, the blind zone being positionable on the display device by slaving to a pointing device; and

displaying (S60) on the display device a marking (MZ2) allowing the viewing of the determined zone of interest (Z2),

wherein the highlighting (S70, S90) of the object zone comprises enhancing the determined zone of interest (Z2) by modifying the determined zone of interest (S70) and by reproducing the determined zone of interest (S90) in a vision zone (Z3) according to at least one predetermined processing.

US Pat. No. 9,804,421

METHOD FOR DETERMINING AT LEAST ONE OPTICAL DESIGN PARAMETER FOR A PROGRESSIVE OPHTHALMIC LENS

1. A method for determining at least one optical conception parameter for a progressive ophthalmic lens intended to equip
a frame of a wearer, depending on the visual behavior of the latter, the method comprising the following steps:
a) collecting a plurality of behavioral measurements relating to a plurality of gaze directions and/or positions of the wearer
during a visual task;

b) statistically processing said plurality of behavioral measurements in order to determine a zone of use of the area of an
eyeglass fitted in said frame, said zone of use being representative of a statistical spatial distribution of said plurality
of behavioral measurements;

c) determining at least one optical conception parameter for said progressive ophthalmic lens depending on a spatial extent
and/or position of the zone of use, wherein said at least one optical conception parameter comprises at least one of a restricted
progression-length range [Lpmin; Lpmax] and a value of progression length;

b1) calculating a position of the centroid of the zone of use;
b2) determining the sign of the difference ? between the vertical position of the centroid and a reference vertical position,
corresponding to a mean drop angle of the gaze relative to a primary direction of the far-vision gaze of the wearer; and

c2) determining a restricted progression-length range [Lpmin; Lpmax] or a value of progression length depending on the sign
of the difference ?.

US Pat. No. 9,746,693

SYSTEM COMPRISING A MULTIFOCAL DIFFRACTIVE LENS COMPONENT

CENTRE NATIONAL DE LA REC...

1. A simultaneously bifocal optical system, the said optical system being defined by a first system focal point and a second
system focal point and a pupil, said system comprising:
a simultaneously bifocal diffractive lens component having a first focal point, a second focal point and a plurality of diffractive
zones, the plurality of diffractive zones including a central zone and a plurality of annular concentric zones surrounding
the central zone, the lens component having a first optical power P1 and a second optical power P2 associated with the first
focal point and the second focal point respectively, the first focal point and the second focal point respectively corresponding
to points of convergence of the most luminous orders of diffraction generated by the lens component for a nominal wavelength,
the first system focal point and the second system focal point having a position dependent upon a value of the first optical
power P1 and the second optical power P2 of the lens respectively, wherein the central zone has a surface area value configured
such that a predetermined optical performance optimization parameter ? is optimized, said optical performance optimization
parameter ? being considered in the vicinity of the first and second system focal points and varying as a function of a surface
area value of the central zone without modifying the operational function of the diffractive zones, said predetermined optical
performance optimization parameter ? being such as the brightness and/or the Modulation Transfer Function in the vicinity
of the first and second system focal points, whereby the central zone has a surface area value determined as a function of
the pupil of the optical system, of the first optical power P1 and of the second optical power P2, and the surface area of
the annular zones surrounding the central zone does not change with the optimization parameter ? while the area of the central
zone does change with optimization parameter ?.

US Pat. No. 9,720,261

METHOD FOR MANUFACTURING AN OPHTHALMIC LENS

1. Method for manufacturing an ophthalmic lens comprising a substrate (31) and a functional film securely fastened to a curved face (S1) of said substrate, said manufacturing method comprising a method for gluing said functional film, which is initially flat,
to said curved face (S1); wherein, in order to ensure that said functional film (32; 53) when securely fastened to said curved face (S1) is configured to filter a preset band of wavelengths centred on a wavelength denoted ?p, said curved face (S1) having a curvature denoted CS selected from a preset set of curvatures (CS1, CS2, CS3, CS4), the following steps are carried out:
i) a step of preselecting a plurality of functional films (FILM 1, FILM 2) that are each initially flat and that are each initially configured to filter a band of wavelengths centred on a wavelength,
denoted ?i, specific to each preselected film;

ii) a step of establishing experimentally a first knowledge base (70) giving, for each curvature (CS1, CS2, CS3, CS4) of said set, the degree of deformation (T11-T24) of each film preselected in step i) once said gluing method has been implemented;

iii) a step of establishing experimentally a second knowledge base (71) giving, in a preset range of degrees of deformation, for each film (FILM 1, FILM 2) preselected in step i), the wavelength, denoted ?i?, on which is centred the band of wavelengths that said each film filters
depending on its degree of deformation;

iv) a step of selecting, using the first knowledge base (70) and the second knowledge base (71), from the plurality of films preselected in step i), a film the wavelength ?i? of which is equal to ?p for the degree of
deformation given for the curvature CS; and

v) a step of implementing said gluing method in order to securely fasten the film selected in step iv) to said curved face
(S1).

US Pat. No. 9,638,933

NOSE SUPPORT ASSEMBLY AND CORRESPONDING SPECTACLE FRAME

1. Nose support assembly for spectacle frame (7), comprising:
two nose support elements (3), known as nose pads, and

for each nose pad (3), a mounting element (2) for said nose pad, known as the nose pad holder, which comprises an arm (20) for connecting to the frame,
each nose pad (3) and the corresponding nose pad holder (2) having connecting means (1) for connecting one to the other, said connecting means being designed to allow the nose pad (3) to move angularly with respect to the nose pad holder (2),the connecting means between the nose pad (3) and the nose pad holder (2) comprising a male element (21) and a female element that forms a housing (32) for receiving the male element;one of said male element (21) and the receiving housing (32) being carried by the nose pad (3) and the other being carried by the nose pad holder (2);the male element (21) being provided with stop means (10) that extend predominantly along an axis, known as the Z axis, which is approximately at right angles to an axis, known as
the X axis, which is parallel to the normal to the nose support face (302) of the nose pad (3), and at right angles to an axis, known as the Y axis, which is parallel to the main axis along which the arm (20) of the nose pad holder (2) extends.

US Pat. No. 9,523,864

METHOD FOR DETERMINING A PROGRESSIVE OPHTHALMIC LENS

1. A method for manufacturing a progressive ophthalmic lens, the lens comprising a main meridian (32) separating the lens in a nasal area (Area_nasal) and a temporal area (Area_temporal),
the method comprising the steps of determining the lens by:
choosing a target optical function suited to a wearer, the target optical function defining, for each gaze direction when
the lens is worn, a refractive power (P?,?), a module of astigmatism (Ast?,?) and an axis of astigmatism (??,?), each gaze direction corresponding to a lowering angle (?) and to an azimuth angle (?);

defining a front surface of the lens and a rear surface of the lens, each surface having in each point a mean sphere value
(SPHmean) , a cylinder value (CYL) and a cylinder axis (?AX), the front surface and the rear surface each being non-rotationally symmetrical aspheric surfaces,

defining at least one first portion (Portion1) in the temporal area (Area_temporal) and at least one second portion (Portion2) in the nasal area (Area_nasal);

for at least one of the first or the second portion of the front surface (Portion1, Portion2), determining respectively a first or a second reference axes (?1, ?2), the first reference axis (?1) being set to a value comprised between [?T?20°, ?T+20°] with ?T being the average axis of astigmatism of the target optical function for gaze directions intersecting the front surface over
the first temporal portion (Portion1), and the second reference axis (?2) being set to a value comprised between [?N?20°, ?N+20°] with ?N being the average axis of astigmatism of the target optical function for gaze directions intersecting the front surface over
the second nasal portion (Portion2), the average axis(?N, ?T) of astigmatism of the target optical function defining a direction of smallest optical power; and

modifying the front surface so that:
over the first portion (Portion1), the sphere value (SPH(?1)) along the first reference axis is superior to the sphere value (SPH(??1)) along a perpendicular axis to the first reference axis (SPH (?1)>SPH(??1)); or

over the second portion (Portion2), the sphere value (SPH(?2)) along the second reference axis is superior to the sphere value (SPH(??2)) along a perpendicular axis to the second reference axis (SPH (?2)>SPH(??2));

the method further comprising manufacturing the progressive ophthalmic lens having the modified front surface.

US Pat. No. 9,492,978

METHOD OF MAKING OPHTHALMIC LENSES WITH A STRUCTURED SURFACE

ESSILOR INTERNATIONAL, C...

1. A method for fabricating an ophthalmic lens, comprising:
providing a lens blank made of a transparent optical quality material, the lens blank having a structured surface and a non-structured
surface, the structured surface having a base curvature, the structured surface being defined by a plurality of peaks and
valleys;

applying a resin coating to the structured surface of the lens blank so that the resin coating covers the structured surface
and has a smooth free surface with a curvature corresponding to the base curvature of the structured surface;

curing the resin coating in situ on the lens blank in a mold part with a UV lamp, wherein a material of the resin coating
has a refractive index is between about 1.38 and about 1.55;

providing a rigid film or film stack; and
laminating or bonding the film or film stack to the resin coating, wherein,
a) the UV lamp is disposed on the side of the lens blank remote from the mold part, and not on a mold side, and is configured
to emit incident UV radiation which is directed at the non-structured surface of the lens blank, and

b) successively, the rays of the incident UV radiation first pass through the non-structured surface of the Fresnel lens blank,
which is opposite the structured surface of the Fresnel lens blank, then the rays of reach the valleys of the structured surface
of the Fresnel lens blank before reaching the resin coating, then the rays reach and cure the resin coating, and then the
rays pass through the transparent mold part at the opposite of the non-structured surface.

US Pat. No. 9,446,428

METHOD OF DIP-COATING A SEGMENTED MULTIFOCAL LENS

11. A carriage device for use in the method according to claim 1, comprising a carriage structure (20) and a basket support (21) hung from the carriage structure (20), the basket support (21) being configured to receive at least one lens (1) to be dip-coated and the carriage structure (20) comprising at least one arm (29,32) configured to bear the at least one lens (1), wherein the basket support (21) is movable with a movement of circular translation relative to the carriage structure (20) to incline the at least one lens (1) placed on the basket support (21) to an inclined position between a vertical position and a horizontal position of the at least one lens (1).
US Pat. No. 9,435,914

OPTICAL ARTICLE COMPRISING A PRECURSOR COATING FOR AN ANTIFOGGING COATING AND A TEMPORARY LAYER RENDERING SAME SUITABLE FOR EDGING

ESSILOR INTERNATIONAL, C...

1. An optical article comprising a substrate, comprising:
at least one main surface coated with a first coating comprising, at the surface, silanol groups;
a second coating that is in direct contact with the first coating, and which is formed by deposition on the first coating,
of at least one compound A comprising:

a polyoxyalkylene group; and
at least one group capable of establishing a covalent bond with a silanol group;
wherein the second coating is further defined as precursor for an antifog coating and comprises an internal part, in which
compound A is grafted to the first coating, and an external part that can be removed by washing and/or wiping; and

at least one temporary layer comprising at least 50% by weight of silica, with respect to the total weight of the temporary
layer, wherein the second coating is coated with the temporary layer.

US Pat. No. 9,261,876

MACHINING METHOD BY TURNING A FACE OF A SPECTACLE LENS

1. A machining method comprising:
determining a fixed rotational speed (Vrot) from geometric characteristics (x, y, z) of a surface (12) of a spectacle lens, according to the following steps:

determining (102) a value (Maxdiff) representative of a greatest difference of mean sphere geometric values (Sph) on said surface (12); and

deducing (107) the fixed rotational speed (Vrot) from said value (Maxdiff) of the greatest difference of mean sphere geometric values (Sph)
on said surface (12) and from a cylinder geometric value (FV torus) at a predetermined far-vision control point; and

turning the surface of the spectacle lens with a turning machine at the fixed rotational speed.

US Pat. No. 9,169,373

METHOD FOR PREPARING A THERMOPLASTIC POLYURETHANE OF IMPROVED YELLOWNESS INDEX, AND OPTICAL ARTICLES MADE THEREFROM

1. A method of forming an ophthalmic lens from a composition including polyurethane resin, comprising the steps of:
combining the composition
with 1,4-Di(2,6-dibromo-4-methylphenylamino)anthracene-9,10-dione to form a mixture;
converting said mixture into a thermoplastic polyurethane; and
shaping the obtained thermoplastic polyurethane into the ophthalmic lens,
wherein the polyurethane resin is either a polymerizable composition comprising precursors of thermoplastic polyurethane,
or pellets and/or powder made of thermoplastic polyurethane which is not light-stabilized, and wherein said obtained lens
has a Yellowness Index that does not increase by more than 4.0 over a Suntest of over 200 hours.

US Pat. No. 10,114,234

TRANSPARENT OPTICAL ARTICLE HAVING A REDUCED YELLOWNESS APPEARANCE

1. An optical lens comprising a thermoplastic substrate having a weight and front and back main surfaces and:at least one dye A at least partially inhibiting light transmission for at least one wavelength ranging from 400 to 460 nm; and
at least one optical brightener B for at least partially balancing the color imparted to the optical lens by the dye A;wherein:the at least one optical brightener B emits light by fluorescence at at least one wavelength ranging from 400 to 460 nm, and is incorporated into at least one layer L1 fused or bonded to the thermoplastic substrate and having a weight;
the dye A and the optical brightener B are different from each other; and
the dye A is incorporated into the thermoplastic substrate and the optical brightener B is incorporated in the at least one layer L1, which is formed on the front main surface of the lens.

US Pat. No. 10,042,184

METHOD FOR IMPROVING VISUAL COMFORT TO A WEARER AND ASSOCIATED ACTIVE SYSTEM OF VISION

Essilor International, C...

1. A method for improving visual comfort to a wearer and for improving binocular vision for the wearer in near vision, comprising the following:providing a first and a second customizable ophthalmic lenses mounted on a spectacle frame, the first customizable ophthalmic lens to be disposed in front of one eye of the wearer and the second customizable ophthalmic lens to be disposed in front of the other eye of the wearer, each lens having an electrically variable occultation between a first light occultation state and a second light occultation state, the first light occultation state being substantially transparent and the second light occultation state being substantially obscured;
identifying the wearer's viewing state among at least a near vision viewing state (NVVS), the near vision viewing state being defined for viewing distances equal to or lower than 60 cm, wherein identifying the wearer's viewing state comprises:
measuring an oculo-motor activity of each eye of the wearer and comparing measured oculo-motor activity of each eye of the wearer with standard oculo-motor activity of each eye during the near vision viewing state;
determining, for each eye, an actual gaze direction of the eye of the wearer when wearing the first and the second customizable ophthalmic lenses;
determining an actual number and magnitude of horizontal ocular saccades for each eye from the actual gaze directions of the eyes of the wearer; and
comparing the actual number and magnitude of horizontal ocular saccades of the eyes of the wearer with standard number and magnitude of ocular saccades during the near vision viewing state;
switching the electrically variable occultation of one of the first and the second customizable ophthalmic lenses from the first light occultation state to the second light occultation state when the near vision viewing state (NVVS) is identified while at the same time the other lens is in the transparent state; and
providing the first and the second customizable ophthalmic lenses such that each of their electrically variable occultation is in the first light occultation state when the wearer's viewing state is identified as being different from said near vision viewing state.

US Pat. No. 9,919,453

METHOD FOR DRILLING AN OPHTHALMIC LENS IN A HELICAL TRAJECTORY AND ASSOCIATED DRILLING DEVICE

1. A method for drilling an ophthalmic lens, comprising the following steps of:
storing the desired shape and dimensions of a drill hole in the ophthalmic lens and the position at which this drill hole
opens onto one of the faces of the ophthalmic lens,

positioning a drilling tool opposite the stored position of the hole to be drilled,
determining a control setpoint for the transverse movement and the axial feed of the drilling tool, and
drilling the ophthalmic lens in accordance with said control setpoint,
wherein the control setpoint for the transverse movement and the axial feed of the drilling tool causes the tip of this drilling
tool, during at least one drilling pass, to follow a helical or pseudo-helical trajectory depending on the desired shape and
dimensions of the drill hole, and

wherein the axial feed of the drilling tool during said drilling pass varies so that it is slower close to each face of the
ophthalmic lens than in a central part of the thickness of the ophthalmic lens.

US Pat. No. 9,855,634

DEVICE FOR CUTTING AN OPHTHALMIC LENS

1. A trimming device for trimming an ophthalmic lens to be mounted on a spectacles frame, the trimming device comprising:
a rotation blocking and driving assembly configured to block and drive a rotation of the ophthalmic lens about a blocking
axis;

a tool holder which carries
a first tool configured to rotate a grinding working surface about a rotational axis,
a second tool configured to rotate a finishing working surface about a finishing axis, and
one of a measurement instrument and a measurement assembly configured to measure a geometry of the ophthalmic lens,
the tool holder being configured to move with respect to said blocking and driving assembly with three types of mobility,
the three types of mobility including

a separation mobility for adjusting a radial separation of said first and second tools from the blocking axis,
an offsetting mobility for adjusting an axial position of said first and second tools with respect to said blocking and driving
assembly on the blocking axis, and

a pivoting mobility about a pivot axis transverse or orthogonal to the blocking axis, for adjusting an orientation of said
rotational axis and said finishing axis with respect to said blocking axis, and

a controller configured to control the three types of mobility of the tool holder with respect to the blocking and driving
assembly, the controller being configured to select the one of the measurement instrument and the measurement assembly or
one of the first and second tools by controlling the pivoting mobility of the tool holder with respect to the blocking and
driving assembly to bring the one of the measurement instrument and the measurement assembly or the one of the first and second
tools into position for measuring or machining the ophthalmic lens,

wherein said rotational axis and said finishing axis are distinct axes.

US Pat. No. 9,841,652

ELECTROCHROMIC COMPOSITION

1. An electrochromic composition comprising:
at least one reducing compound;
at least one dye;
at least one electrochromic oxidizing compound selected from viologen derivatives of formula (I)

at least one least one electrochromic oxidizing compound selected from viologen derivatives of formula (II)
wherein
R1 and R2 are each independently selected from optionally substituted phenyl groups;

R3, R4, R5 and R6 are each independently selected from H, alkyl, alkoxy, alkylthio, haloalkyl, haloalkoxy, haloalkythio, polyakylenoxy, alkoxycarbonyl,
aryl, substituted aryl, heteroaryl and substituted heteroaryl, wherein the alkyl group may be substituted by one or more substituents
independently selected from alkoxy, cycloalkyl, aryl, substituted aryl, heteroaryl and substituted heteroaryl;

n, p, q and r are each independently an integer from 0 to 4, wherein when n, p, q or r are two or more, each of the R3, each of the R4, each of the R5 or each of the R6 may be identical or different;

A and B are respectively selected from nitrogen and —N+(R7a)—, and from nitrogen and —N+(R7b)—, wherein R7a and R7b are independently selected from:

alkyl which may be substituted by one or more groups independently selected from halogen, alkoxy, cycloalkyl, vinyl, allyl,
aryl, substituted aryl, heteroaryl and substituted heteroaryl;

aryl and heteroaryl which may be both substituted by one or more groups independently selected from:
halogen, cyano, nitro, alkyl, haloalkyl, arylalkyl, cycloalkyl, cycloalkylalkyl and heterocycloalkylalkyl, alkenyl, alkynyl,
allyl, vinyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, —N(aryl)2, —N(aryl)CO(aryl), —CO-aryl and —CO-substituted aryl;

—OR8, —SR8, —S(O)R8, —S(O2)R8, —S(O2)NR8R9, —NR8R9, —NR8COR9, —NR8CO(aryl), —NR8aryl, —CH2OR8, —CH2SR8, —CH2R8, —CO—R8 and —CO2R8 wherein R8 and R9 are independently selected from H, alkyl, haloalkyl, arylalkyl, cycloalkyl, cycloalkylalkyl and heterocycloalkylalkyl;

—S(O2)NR10R11 and —NR10R11, wherein R10 and R11 form together with the nitrogen atom to which they are linked a saturated 5 to 7 membered heterocycloalkyl which may comprise
in addition to the nitrogen atom one further heteroatom selected from oxygen, nitrogen and sulphur, and which may be optionally
substituted by one or two groups independently selected from halogen, —R8, —OR8, and —NR8R9, wherein R8 and R9 are as defined above;

—V—W—R12 wherein:

V is selected from oxygen, —N(R8)—, sulphur, —S(O)— and —S(O2)— wherein R8 is as defined above;

W is alkylene, which may be substituted by one or more groups independently selected from halogen and alkoxy; and
R12 is selected from —OR8, —NR8(alkyl) and —SR8 wherein R8 is as defined above; and

—OC(O)—R13 wherein R13 is selected from alkyl, haloalkyl, alkenyl, —W—R12, and aryl group which may be substituted by 1 to 4 groups selected from halogen, —R8, —OR8, —SR8, —NR8R9, —NR10R11, —CO—R8, —C(O)OR8, wherein R8, R9, R10, R11, R12 and W are as defined above;

Z is selected from:
alkylene;
cycloalkylene; and
a bivalent groups of formula —R14—Y—R15—, wherein

R14 and R15 are each independently selected from single bond, alkylene and cycloalkylene; and

Y is selected from arylene, cycloalkylene, heteroarylene, arylene-arylene or arylene-CR?R?-arylene wherein R? and R? form
together with the carbon to which they are linked a carbocyclic group;

wherein said alkylene, cycloalkylene, arylene, heteroarylene and carbocyclic groups may be substituted by one or more substituents
selected from halogen, alkyl, alkoxy, alkylthio, hydroxyalkyl, acyloxy, cycloalkyl, aryl, substituted aryl, aryloxy heteroaryl
and substituted heteroaryl;

m is 2 if A and B are nitrogen, 3 if one of A and B is nitrogen and the other is not nitrogen, and 4 if both A and B are not
nitrogen; and

X? is a counterion.
US Pat. No. 9,835,767

ADAPTATION LAYER FOR ANTIREFLECTIVE DESIGNS ON LENSES OF VARIOUS REFRACTIVE INDEXES

1. An ophthalmic lens comprising a transparent substrate wherein at least one face of the substrate comprises an antireflective
stack comprising:
a layer Lmed having:
a thickness of a three-quarter-wave layer for a design wavelength in a range of 480 nm-550 nm;
a refractive index in a range of 1.5-1.70; and
a refractive index different from the refractive index of substrate;
at least one layer different from Lmed having a refractive index higher than 1.6; and
at least one layer different from Lmed having a refractive index lower than 1.55.

US Pat. No. 9,709,819

METHOD FOR PRINTING AN INK JET MARKING ON A SURFACE

1. A method for printing an inkjet marking on a surface that cannot be wetted by the ink in liquid form, that is to say a
surface on which the drop of liquid ink forms a static contact angle greater than or equal to 90°, comprising the following
steps:
(a) forming at least a first drop of solidified ink E1 on the surface, by ejecting, by means of a printhead, a first drop of liquid ink at a first given ejection velocity V1 and with a first given volume VOL1, and

(b) depositing, on at least one portion of said first drop of solidified ink, at least a second drop of ink E2 having a second volume VOL2, by ejecting, by means of a printhead, a second drop of liquid ink at an ejection velocity V2,

the first velocity V1 being sufficient to flatten in step a) said first drop of ink on said surface and give said first drop of solidified ink
E1 a flattening contact area equivalent to the contact area obtained at equilibrium for a drop of the same liquid ink with the
same volume VOL1 present on a wettable surface, which is a surface on which the drop of liquid ink forms a static contact angle of less than
or equal to 80°.

US Pat. No. 9,694,534

DEVICE FOR THERMOFORMING A PLASTIC FILM

1. A device for thermoforming a plastic film, comprising:
a chamber configured to have variable internal pressure, and having an opening in a side of said chamber;
an attachment system configured to attach the film around said opening, and hold a peripheral edge of the film firmly so that
said film closes off and seals the chamber;

a pressure control system configured to vary and control the pressure in the chamber, and cause the film held by the attachment
system to deform in the chamber opening into a deformation which varies as a function of said pressure;

a measurement system configured to measure a sag of the film held by the attachment system, said measurement system being
arranged outside the chamber and facing the opening of said chamber;

a heating system configured to heat said film held by the attachment system, and comprising a hot air blowing unit arranged
to produce a stream of hot air flowing externally to the chamber and in contact with the film, wherein the blowing unit is
configured to cause the stream of hot air to flow parallel to the film from a first lateral side of the opening of the chamber
to a second lateral side of said opening, said second side being opposite said first side; and

a ring extending around the opening of the chamber, outside said chamber, with a slanted face that is slanted relative to
a midplane of the opening, and with a lower internal edge of said slanted face being arranged to come in contact with or in
proximity to the film held by the attachment system, along at least a portion of the peripheral edge of said film, and with
the blowing unit being arranged to produce the stream of hot air from an upper external edge of the slanted face, on the first
lateral side of the chamber opening, wherein the slanted face of the ring forms an angle which is between 25° and 90° relative
to an axis perpendicular to the side of the chamber, and in the midplane of the opening connecting the first and second lateral
sides and wherein the slanted face of the ring is configured to guide the stream of hot air to or close to the plastic film,
avoiding an area of stationary air in a recessed angle between the ring and the plastic film.

US Pat. No. 9,658,472

METHOD OF CONTROLLING A PROGRAMMABLE LENS DEVICE

1. A method of controlling a programmable lens device comprising a programmable lens and an optical function controller, the
programmable lens having an optical function and extending between at least one eye of a wearer and a real world scene when
the programmable lens device is used by the wearer, and the optical function controller being arranged to control the optical
function of the programmable lens, the method comprising:
an optical function data receiving step during which optical function data relating to the optical function of the programmable
lens is received by the optical function controller;

an activity data receiving step during which activity data relating to an activity of the wearer are received by the optical
function controller; and

an optical function modifying step during which the optical function of the programmable lens is modified by the optical function
controller based on the optical function data and the activity data.

US Pat. No. 9,645,043

METHOD FOR CHECKING THE COMPLIANCE OF AN OPTICAL CHARACTERISTIC OF AN OPHTHALMIC LENS AND ASSOCIATED DEVICE

1. A method for verifying the conformity of a verified optical characteristic of a verified ophthalmic lens to an expected
optical characteristic, on the basis of an undeformed test pattern and a deformed test pattern each having a nonuniform contrast,
said method comprising steps of:
a) determining an image test pattern, i.e. the image of said deformed test pattern through said verified ophthalmic lens,
under set optical conditions;

b) combining said image test pattern with said undeformed test pattern in order to form a test test pattern;
c) comparing said test test pattern to at least one reference test pattern; and
d) deducing the conformity of said verified optical characteristic to said expected optical characteristic depending on the
preceding comparison.

US Pat. No. 9,664,924

METHOD FOR PROCESSING AN UNFINISHED OPTICAL LENS MEMBER FOR MANUFACTURE OF AN OPTICAL LENS

1. A method of processing an unfinished optical lens member for manufacture of an optical lens from the unfinished optical
lens member, the unfinished optical lens member being provided with a finished surface having a geometrical center reference
point, the optical lens having a first and a second surface, said first surface being comprised in the finished surface of
the unfinished optical lens member, the method comprising:
providing contour data defining the contour of the first surface of the optical lens in a finished cut state, the maximum
distance between two points of the contour being defined by a distance Cmax;

determining, an optical reference point of the first surface of the optical lens with respect to the contour, said optical
reference point being defined from the line of sight of a user of the optical lens in the finished cut state, the maximum
distance between the optical reference point and the contour being defined by a distance Mmax,

providing a first surface dataset defining the second surface with respect to the optical reference point;
providing an unfinished optical lens member having a minimum distance RSF between the geometrical center reference point and
the boundary of the unfinished optical lens member such that 2 RSF?Cmax and RSF
virtually offsetting the optical reference point of the optical lens on said first surface with respect to the geometrical
center reference point of the unfinished optical lens member such that when the contour of the optical lens is offset in correspondence
with the offset optical reference point, said offset contour is within the boundaries of the unfinished optical lens member;
and

transforming the first surface dataset into a second surface dataset defining the second surface with respect to the virtually
offset optical reference point.

US Pat. No. 9,664,929

METHOD FOR DETERMINING AT LEAST ONE HEAD POSTURE CHARACTERISTIC OF A PERSON WEARING SPECTACLES

1. A method for determining at least one postural characteristic of the head of a wearer of a pair of spectacles comprising
a frame and two lenses, using a determining device comprising an image sensor, at least one light source and a processing
unit, said determining method comprising steps of:
a) acquiring via the image sensor an image of at least part of the head of the wearer, in which image appears the pair of
spectacles illuminated by the light source;

b) locating via the processing unit, in said image, largest reflections of the light source reflected by the optical faces
of the two lenses of the pair of spectacles; and

c) deducing via the processing unit the postural characteristic of a position of the head of the wearer relative to said image
sensor, as a function of the position of said largest reflections in said image.

US Pat. No. 9,625,740

PHOTOCHROMIC OPHTHALMIC LENS

1. A photochromic ophthalmic lens having a front main face and a back main face, and comprising:
(i) a photochromic substrate; and
(ii) a filter including one or more layers formed on said front main face of the ophthalmic lens,
said filter having a total thickness smaller than or equal to 700 nm and conferring on said front main face the following
properties:

an average reflection factor in the UVA (Rm,UVA) over a range of wavelengths extending from 330 nanometers to 380 nanometers that is lower than or equal to 40%, for an angle
of incidence comprised between 0° and 15°;

an average reflection factor in the blue (Rm,B) over a range of wavelengths extending from 420 nanometers to 450 nanometers that is higher than or equal to 5%, for an angle
of incidence comprised between 0° and 15°; and

a spectral reflectivity curve for an angle of incidence comprised between 0° and 15°, this reflectivity curve having:
a maximum reflectivity at a wavelength shorter than 435 nanometers; and
a full width at half-maximum (FWHM) larger than or equal to 70 nanometers; and
for an angle of incidence comprised between 0° and 15°, a parameter ?spectral defined by the relationship ?spectral=1?[R0°-15° (480 nm)/R0°-15° (435 nm)], such that this parameter ?spectral is higher than or equal to 0.8; where

R0°-15° (480 nm) represents the value of the reflectivity of the front main face at the wavelength of 480 nanometers at the incidence
in question; and

R0°-15° (435 nm) represents the value of the reflectivity of the front main face at the wavelength of 435 nanometers at the incidence
in question.

US Pat. No. 9,557,447

METHOD FOR THE ADDITION OF A FUNCTIONAL COATING ON AN OPTICAL SURFACE OF A SPECTACLE LENS SUITABLE TO BE ARRANGED IN A SPECTACLE FRAME

1. A method for adding a chosen functional coating on an optical surface of an existing spectacle lens where the features
of said optical surface are unknown, the method being implemented in an eye care practitioner's premises or a spectacle lens
retailer shop, the method comprising successive steps of:
providing the existing spectacle lens arranged in a spectacle frame;
carrying out a diagnostic step of the existing spectacle lens prior removing any existing coating of said existing spectacle
lens and prior adding the chosen functional coating on an optical surface and wherein the quality of the optical surface is
analyzed and the features of the optical surface are identified;

determining, thanks to the diagnostic step, if identified features of the optical surface of the existing spectacle lens are
compatible with the chosen functional coating according to a first set of rules using a processor, the features of the optical
surface identified based on an analysis of a quality of the optical surface, the first set of rules including an incidence
matrix having a list of a plurality of optical surface features associated with a list of a plurality of functional coatings;
and

generating manufacturing information for the chosen functional coating based on the determined compatibility, the manufacturing
information including information for depositing the chosen functional coating on the optical surface where the identified
features are compatible with the chosen functional coating and on a modified optical surface where the identified features
are not compatible with the chosen functional coating.

US Pat. No. 9,557,449

CURABLE COATING COMPOSITION

1. A UV curable coating composition comprising:
a) at least one non hydrolyzed epoxyalkoxysilane;
b) at least one polyfunctional acrylate monomer and/or polyfunctional epoxy compound, different from said at least one non
hydrolyzed epoxyalkoxysilane;

c) at least one free radical photoinitiator and/or cationic photoinitiator;
wherein the total amount of said at least one polyfunctional acrylate monomer and/or polyfunctional epoxy compound is more
than 40 weight %, relative to the total dry matter of the composition; the total amount of said at least one non hydrolyzed
epoxyalkoxysilane is from 20 to less than 60 weight % relative to the total dry matter of the composition; and

said composition does not comprise any hydrolyzed epoxyalkoxysilane.

US Pat. No. 9,475,166

METHOD FOR CUTTING-OUT A MULTI-LAYER OPHTHALMIC LENS

1. A process for trimming an ophthalmic lens along a desired outline, said ophthalmic lens comprising a substrate and at least
one coating film that is made of a different material to that of the substrate and that covers a main face of the substrate,
comprising:
a step of pre-roughing the ophthalmic lens by means of a preliminary tool, along a preliminary outline separate and deduced
from said desired outline;

a step of roughing the ophthalmic lens by means of a roughing abrasive wheel, along a roughing outline coincident with or
enlarged relative to the desired outline; and

a step of finishing the ophthalmic lens by means of a finishing tool,
wherein said preliminary outline is enlarged relative to the desired outline and the roughing abrasive wheel used has a grain
size between 0.1 millimeter and 0.5 millimeter and is pushed on said ophthalmic lens so as to apply, in said roughing step,
a radial force between 0.1 Newton and 5 Newton to the ophthalmic lens.

US Pat. No. 9,162,870

LINEAR FLUIDIC ACTUATOR

1. An adjustable optical surface device comprising:
a deformable optical surface; and
a plurality of linear fluidic actuators configured to selectively adjust the shape of the deformable optical surface, each
of said plurality of linear fluidic actuators having:

(i) an upper actuation deformable surface configured to induce a displacement in an actuation direction L to deform said deformable
optical surface, and

(ii) a wall delimiting an internal cavity,
wherein, for each of said plurality of linear fluidic actuators:
each of said actuators is a pillar, the pillar comprising a lower part and an upper part,
the wall and the internal cavity form the lower part of said pillar, where h1 is the height of the internal cavity at rest along the actuation direction L,

the upper part of said pillar comprises an upper surface of said upper part of said pillar and a bottom surface of said upper
part of said pillar, said upper surface of said upper part of said pillar being the upper actuation deformable surface, the
bottom surface of said upper part of said pillar closing an upper part of the internal cavity so as to form an upper surface
of said internal cavity, and where h2 is the distance at rest along the actuation direction L from the upper surface of said internal cavity to the upper actuation
deformable surface,

the height ratio h1/h2 is between 0.2 and 10, and

a fluidic inlet is configured for introducing a fluid into the internal cavity;
said plurality of actuators are arranged so as to form an array that forms a progressive addition lens (PAL); and
the fluidic inlets of the actuators are in communication with a fluid source via a path configured such that the cavities
of the respective actuators are fillable with fluid at a plurality of respective fluidic pressures, which plurality of respective
fluidic pressures may be selectively different from one another.

US Pat. No. 9,050,755

PROCESS FOR PRODUCING A CURVED SUBSTRATE COVERED WITH A FILM

1. A process for producing a curved substrate covered with a film, comprising:
providing the substrate with a curved receiving surface;
preforming the film so as to provide said film with a curved shape having a curvature that is higher than a curvature of the
substrate receiving surface;

heating the curved film up to a pre-assembling temperature with a progressive temperature increase over at least 30 minutes
between 50° C. and the pre-assembling temperature; and

maintaining the film at or above the pre-assembling temperature for at least one hour;
assembling the film with the substrate by applying said film on the substrate receiving surface, with adhesive arranged between
said film and said substrate; and

heating the substrate assembled with the film up to a post-assembling temperature that is lower than the pre-assembling temperature,
wherein the preforming includes thermoforming the film.

US Pat. No. 9,974,435

QUALITY CONTROL METHOD FOR OPTOMETRIC MEASUREMENTS

1. A method for controlling the quality of optometric measurements for determining the optical-mechanical properties and the quality of a corrective spectacle lens suitable for a spectacle wearer, the controlling method comprising the following steps:(a) computationally recording a first recording comprising at least one first value of a first identifier allowing a spectacle wearer to be identified and at least one other value of another identifier allowing an optometric apparatus at a first optometric measurement site to be identified;
(b) carrying out, by means of the optometric apparatus of the first site, at least one optometric measurement comprising at least one measurement of an ocular refraction parameter of at least one eye of the spectacle wearer and/or a measurement of horizontal and vertical positions of the pupil of the eye of this wearer relative to a frame intended to accommodate the corrective lens;
(c) transmitting to a second site a numerical measurement dataset comprising the optometric measurement result of step (b), the numerical dataset being computationally associated with the first recording; and
(d) digitally processing the optometric measurement result computationally associated with the first recording depending on numerical reference data and/or the respective identifier of the optometric apparatus of the first recording;
(e) determining a numerical visual-correction prescription dataset of a new corrective lens depending on the numerical dataset computationally associated with the first recording;
(f) having the numerical visual-correction prescription dataset digitally signed and validated by a professional qualified to prescribe the refraction powers of a new corrective lens;
(g) transmitting to a third site the numerical prescription dataset associated with the first identifier of the wearer and with a signature attached to the qualified professional;
(h) certifying the signature transmitted in step (g) and transmitting the result of this certification to the third site;
(i) generating at the third site a digital corrective-lens order dataset triggering the manufacture of this eyeglass;
(j) selecting an optical design or a category of optical design or adapting the calculation of the design depending on the signature attached to the qualified professional;
(k) computationally recording an image file of a pre-existing visual-correction prescription of the wearer associated with the first identifier of the wearer;
(l) transmitting to the second site a numerical measurement dataset comprising the result of the measurement of step (b) and the image file of a pre-existing prescription, which are associated with the first identifier of the wearer and with a digital signature attached to the first site or to the optometric apparatus; and
(m) determining by processing of the image file of a pre-existing prescription and by processing the optometric measurement of step (b) computationally associated with the first recording a numerical visual-correction prescription dataset wherein the prescription dataset comprises three refraction powers of the new corrective lens.

US Pat. No. 9,740,024

PAIR OF PROGRESSIVE OPHTHAMLIC LENSES

1. A method for providing a pair of progressive ophthalmic lenses to an identified wearer, said method comprising the following
steps:
/1/ for the wearer of both lenses:
obtaining the prescriptions for both eyes including a prescribed addition ADD for each of the two lenses, said prescribed
addition being common to both lenses of the pair;

obtaining a value for a separation distance between both pupils of the wearer, and a position of a cyclopean eye for the wearer;
and

defining a cyclopean coordinate system for the wearer, based on the pupil separation distance and the cyclopean eye position;
/2/ for each lens of the pair separately from the other lens:
in standard as-worn conditions of the lens by the wearer, determining a meridian line, a nasal side and a temporal side on
either side of the meridian line, respectively, a fitting cross, a prism reference point, a proximate vision gaze direction,
a mean refractive power PPO?,? and a module of resulting astigmatism ASR?,? for each gaze direction through the lens and corresponding to a lowering angle ? and an azimuth angle ? within the cyclopean
coordinate system;

defining a mean refractive power deviation DPPO?,? for each gaze direction as:

DPPO?,?=PPO?,??PPO?,?meridian,

where PPO?,?meridian is the mean refractive power on the meridian line (LM) for the same value of the lowering angle ? as that of the gaze direction,

defining a total deviation P?,? for each gaze direction as:

P?,?=m*(DPPO?,?)a+n*(ASR?,?)b,

where m, n, a and b are parameters such that m?0, n?0, (m, n)?(0, 0), 0 obtaining first width values as angular distances between first and second gaze directions respectively on the nasal and temporal
sides of the lens, both first and second gaze directions with lowering angle equal to that of a gaze direction through the
fitting cross, and each where the total deviation P?,? satisfies:

P?,?=m*(ADD/8)a+n*(ADD/4)b;

obtaining second width values as angular distances between third and fourth gaze directions respectively on the nasal and
temporal sides of the lens, both third and fourth gaze directions with lowering angle equal to that of the proximate vision
gaze direction, and each where the total deviation P?,? satisfies:

P?,?=m*(ADD/4)a+n*(ADD/2)b;

obtaining a maximum mean refractive power gradient produced for a gaze direction corresponding to a cyclopean gaze direction
which is comprised:

inside a zone centered at the cyclopean gaze direction corresponding to gaze direction passing through the prism reference
point and containing all cyclopean gaze directions respecting the following inequality (|?|2+|?|2)1/2?40°, and

outside a central optical zone, said central optical zone comprising a main line of cyclopean directions for which, for each
angle ?min, the resulting astigmatism reaches its minimum, the central optical zone being delimited on either side of the main line
by cyclopean gaze directions whose azimuth angle is equal to ?min±5°;

/3/ for the lens pair:
defining a total horizontal width ratio as a relative difference between the respective first width values of both lenses
of the pair, or between the respective second width values of both lenses of the pair, the relative difference between two
values being a ratio of a difference between said values over a sum of said values; and

defining a relative difference in the maximum mean refractive power gradient between both lenses of the pair;
/4/ optimizing at least one lens of the pair so that the total horizontal width ratio has an absolute value greater than or
equal to 0.10, and the relative difference in the maximum mean refractive power gradient between both lenses is less than
or equal to 0.08 in absolute value; and

/5/ manufacturing both lenses of the pair in accordance with an optimization result of step /4/.

US Pat. No. 9,772,509

OPTICAL ARTICLE COMPRISING AN ANTIREFLECTIVE COATING WITH A VERY LOW REFLECTION IN THE VISIBLE REGION

1. An ophthalmic lens comprising a transparent substrate with a front main face and with a rear main face, at least one of
the main faces being coated with a multilayered antireflective coating comprising a stack of at least one layer having a refractive
index higher than or equal 1.5 and at least one layer having a refractive index lower than 1.5, such that:
the mean light reflection factor in the visible region Rv is lower than or equal to 0.5%, for at least an angle of incidence lower than 35°;

the Chroma C* is equal or higher than 18 for an angle of incidence (?) of 15°.

US Pat. No. 9,727,946

METHOD OF CUSTOMIZING AN ELECTRONIC IMAGE DISPLAY DEVICE

1. A method for personalizing an image-displaying electronic device having at least one display parameter of variable value,
the image-displaying electronic device being one of a plurality of image-displaying electronic devices, the image-displaying
electronic device being suitable for displaying an image and for modifying the displayed image depending on the value of the
display parameter, said personalizing method comprising adapting the value of the display parameter to a user by way of the
following steps:
a) connecting the image-displaying electronic device to a user database, determining and recording in the user database at
least one value of a parameter of evaluation of the visual and oculomotor profile of the user, said at least one value comprising
a measurement of the visual acuity of this user;

b) connecting the image-displaying electronic device to a display database and creating, in the display database, a digital
record comprising a plurality of display parameter values associated with the image-displaying electronic device and with
an identifier of the image-displaying electronic device, the digital record being stored in a register of the display database
comprising a plurality of digital records associated with the plurality of image-displaying electronic devices, each record
of one of the plurality of image-displaying electronic devices of the register being associated with a single identifier;

c) selecting, with regard to viewing by the user of an image displayed by the image-displaying electronic device, an optimum
value of the display parameter from the plurality of those display parameter values of the digital record which are associated
with the image-displaying electronic device in the display database, depending on said visual acuity measurement associated
with this user in the user database; and

d) automatically applying the optimum value of this image display parameter to the image-displaying electronic device so as
to improve the recognition or the readability of the displayed image and the visual comfort of the user.

US Pat. No. 9,726,787

METHOD FOR THE PRODUCTION OF AN OPTICAL ARTICLE WITH IMPROVED ANTI-FOULING PROPERTIES

1. A method for the manufacture of an optical article comprising:
providing a substrate having two main faces and bearing —OH functions on at least one of its faces; and
exposing successively at least one face of the substrate bearing —OH functions to at least two distinct materials M1 and M2,
M1 having a weight average molecular weight higher than M2, in the order M1 followed by M2, in a vacuum chamber under conditions
resulting in the deposit of those materials on the surface of the substrate, wherein:

M1 is a substituted silane, comprising:
at least one function X1 bonded to a silicon atom, wherein the Si—X1 group is capable of forming a covalent bond with a —OH
group of the substrate, and/or a covalent bond with M2, and

at least one fluorine containing group,
M2 is a substituted silane having a number average molecular weight less than or equal to 900 g/mol, comprising:
at least one function X2 bonded to a silicon atom, wherein the Si—X2 group is capable of forming a covalent bond with a —OH
group of the substrate and/or a covalent bond with M1, and

at least one hydrophobic and/or oleophobic group, or at least one hydrophilic group,wherein the difference between the weight average molecular weight of M1 and the weight average molecular weight of M2 is
higher than or equal to 600 g/mol, andthe deposit of M1 and/or M2 is performed by evaporation under reduced pressure; andM1 and M2 are covalently grafted on the substrate's surface.

US Pat. No. 9,529,212

METHOD AND DEVICE FOR DETERMINING AT LEAST ONE CUSTOMIZED ADJUSTMENT PARAMETER OF A LENS CARRIED BY A SPECTACLES FRAME FACING THE EYE OF A WEARER

1. A device for evaluating at least one individualized fitting parameter for a lens mounted in a spectacle frame facing the
eye of a wearer, said spectacle frame comprising at least one temple and means for holding at least one lens in a holding
plane,
characterized in that:
said fitting parameter comprises a first pantoscopic angle TETA1 formed between the holding plane and the vertical in the vision posture of the wearer;

and in that a measuring device comprises:
a flat supporting member containing a mark taking the form of a line segment;
a flat protractor rotatably mounted about a rotation axis cutting the straight line of the line segment forming the mark,
so that said protractor is able to rotate in a plane parallel to the flat supporting member, said protractor comprising at
least one visual radial marker passing through the rotation axis and designed to be aligned with the holding plane of the
spectacle frame when the spectacle frame is placed on said flat supporting member, a temple being aligned with the mark of
the flat supporting member, and the end of the temple proximal the holding plane of the frame being placed next to the rotation
axis so that the angle formed between the mark of the flat supporting member and the radial marker corresponds to a second
pantoscopic angle TETA2 formed between, on the one hand, the projection of the temple of said frame onto the sagittal plane of the wearer, and on
the other hand, the trace, on the same plane, of the front side of said frame; and

said flat supporting member comprises a plurality of graduated scales, each graduated scale being associated with a preset
postural parameter, the position of the radial marker relative to a graduated scale allowing said first pantoscopic angle
TETA1 to be read directly.

US Pat. No. 9,415,478

METHOD FOR MANUFACTURING OPHTHALMIC LENSES BY MACHINING

1. A process for manufacturing by machining an ophthalmic lens (1) having a first face (2) and a second face (3) opposite said first face (2), said first face (2) being provided with a first optical area (4) and said second face (3) being provided with a second optical area (5), said first and second optical areas (4, 5) defining an optically useful zone (6) of said ophthalmic lens (1), said process comprising steps of:
providing (70) a lens blank (10) having an upper face (12), and a lower face (13) opposite said upper face (12) and a peripheral edge face (17) joining said upper and lower faces (12, 13);

providing (71) a first holding device (30; 130) having a first machining frame of reference (18) defined by three translational directions corresponding to three axes of a basic orthonormal coordinate system and by three
rotational directions defined about said three translational directions, respectively, with two of said three translational
directions being located in one and the same first plane and the other of said three translational directions being located
in a second plane;
said process being characterized in that it comprises steps of:
mounting (72) said lens blank (10) on said first holding device (30; 130) in a first position in which said lower face (13) of said lens blank (10) is facing said first holding device (30; 130), which is configured to hold said lens blank (10) via its lower face (3) or via its peripheral edge face (17);

machining (73; 74; 77; 78; 81), in said first position in said first machining frame of reference (18), said upper face (12) to obtain said first optical area (4) and thus form a semi-finished lens blank (8);

machining (73; 75; 76; 79; 80), in a second machining frame of reference (19) defined in the same way as said first machining frame of reference (18), at least one mechanical referencing element (42; 45; 47) in at least any one of said upper and lower faces (12, 13) and said peripheral edge face (17), said second machining frame of reference (19) being preset and known relative to said first machining frame of reference (18), and said machining step (73; 75; 76; 79; 80) being configured so that said at least one mechanical referencing element (42; 45) is located outside of said optically useful zone (6), so as thus to form a referenced semi-finished lens blank (9); and

providing (84) a second holding device (150) comprising at least one complementary mechanical referencing element (159, 161), which is configured to interact with said at least one mechanical referencing element (42; 45) of said referenced semi-finished lens blank (9) so that the latter is positioned and held on said second holding device (150) in a second position that is preset at least in said three translational directions and in said two rotational directions
defined about said two translational directions that are located in said first plane, respectively,

said at least one mechanical referencing element being formed by machining at least one chamfered zone (42; 45) produced at least in said peripheral edge face (17) and in either one of said upper and lower faces (12, 13), outside of said optically useful zone (6), and said at least one complementary mechanical referencing element being formed by at least one shoulder (160, 161) produced in said second holding device (150) and configured to receive in abutment said at least one chamfered zone.

US Pat. No. 9,104,045

METHOD OF DETERMINING PARAMETERS FOR FITTING AN OPHTHALMIC LENS TO A FRAME

1. A method of determining parameters for fitting an ophthalmic lens to a frame, comprising the steps of:
providing an eyeglass frame including at least one temple portion having a bezel adapted to enable the nesting of an ophthalmic
lens;

determining the shape of the profile of the bezel at a point in the at least one temple portion of said frame;
based on the shape determination, retrieving data concerning evolution of an inclination of the bezel around the frame, the
data having been previously stored in a database in association with the shape of the profile of the bezel as determined at
a point in the at least one temple portion of the frame; and

determining parameters for trimming the ophthalmic lens and fitting the lens to the frame based on said data concerning the
evolution of the inclination of the bezel around the frame.

US Pat. No. 10,288,910

DEVICES AND METHODS FOR DETERMINING THE POSITION OF A CHARACTERIZING POINT OF AN EYE AND FOR TRACKING THE DIRECTION OF THE GAZE OF A WEARER OF SPECTACLES

ESSILOR INTERNATIONAL Cha...

1. A device for determining the position of a noteworthy point of an eye (O1) of a wearer equipped with a vision frame including at least two rims and/or two ophthalmic lenses, the device comprising:at least one image-capturing apparatus, and
positioning means for positioning the image-capturing device with respect to said vision frame, in such a way that, when said vision frame is placed in useful position on the head of the wearer, the image-capturing apparatus is suitable for capturing an image of this eye (O1) of the wearer, the positioning means comprising a measuring support that is equipped with a horizontal bar and two lateral arms, and two clips belonging to said horizontal bar and suitable for interacting with an upper portion of the rims or ophthalmic lenses of the vision frame, and two clips that are each placed at the end of one of the lateral arms and suitable for interacting with a lower portion of the rims or of the ophthalmic lenses of the vision frame, and
means for determining the position of a noteworthy point of the eye (O1) of the wearer from said at least one image of the eye (O1) of the wearer which was captured by the image-capturing apparatus.

US Pat. No. 10,036,898

METHOD FOR DETERMINING AN OPHTHALMIC LENS COMPRISING AN ASPHERICAL CONTINUOUS LAYER ON ONE OF ITS FACES AND AN ASPHERICAL FRESNEL LAYER ON ONE OF ITS FACES

Essilor International, C...

1. A method for determining and manufacturing an ophthalmic lens comprising a front face and a rear face, the front face and the rear face each comprising a geometric center, a prescription being determined for a wearing of said lens by a wearer under usual wearing conditions, the method being implemented by computer and comprising steps for:defining an optical target for said lens which complies with said prescription and a minimum thickness Wm of said lens;
determining a first surface carried by a front face of a first virtual ophthalmic lens and a second surface carried by said rear face of said first virtual lens so that said first virtual lens complies with said prescription and possesses at each of its points a thickness greater than or equal to the minimum thickness Wm;
determining a maximum thickness Wm of said first virtual lens;
determining, as a constraint, a diameter DF that is greater than or equal to 30 mm and a height h that is less than or equal to 500 ?m, both being of a first aspherical continuous layer, the form of which is constrained by diameter DF and the height h;
modeling the first aspherical continuous layer with a radial profile and joining points forming a continuous surface, referenced with respect to a first datum defined by a first origin and a first system of axes, where the first continuous layer is configured so that the first origin is one of the points of the first continuous layer which comprises at this point a zero curvature according to one of said axes of said first system of axes and so that the points of the racial profile making up the first continuous layer which are separated from said axis by a radial distance of strictly less than DF/2 have a height component according to said axis of strictly less than said height h;
modeling a second aspherical continuous layer joining points forming a continuous surface, referenced with respect to a second datum defined by a second origin and a second system of axes, where the second continuous layer is configured so that the second origin is one of the points of the second continuous layer which comprises at this point a zero curvature according to one of the axes of the second system of axes;
modeling an aspherical Fresnel layer with a radial profile on the basis of a cutting of said first continuous layer into Fresnel rings, the Fresnel layer being referenced with respect to the first datum, where said Fresnel layer comprises a plurality of the rings with aspherical profiles and a plurality of discontinuities located in a plane orthogonal to said axis passing through the first origin and delimiting said rings, said discontinuities being inscribed in one another, the discontinuity in which no discontinuity is inscribed being called the “first discontinuity”, said cutting is configured so that a circle of diameter DF centered on said first origin is inscribed in said first discontinuity, at the discontinuities there is a difference of height between two points comprising a first point with a height equal to a cutting height greater than the height h and a second point with a zero height, between two discontinuities, the radial profile of the Fresnel layer evolving in a same manner as the radial profile of the first continuous layer;
modeling a second virtual ophthalmic lens on the basis of the first virtual lens, where said Fresnel layer is added to one of the first or second surfaces of said first virtual lens so that the first origin is placed on the geometric center of the face which carries said Fresnel layer and where the second continuous layer is added to one of the first or second surfaces of said first virtual lens so that the second origin is placed on a predefined point of the face which carries said second continuous layer and where said second virtual lens possesses at, at least one point, a thickness equal to Wm;
determining said Fresnel layer and said second layer by an optical optimization employing said optical target after the step of modeling the second virtual lens so that said second virtual lens complies with said prescription and so that it possesses a maximum thickness of strictly less than Wm; and
determining and manufacturing said ophthalmic lens as the second virtual lens, said ophthalmic lens being determined as being equal to the result of the optical optimization carried out for determining said Fresnel layer and said second layer.

US Pat. No. 10,022,044

METHOD OF VISUAL TESTING OF AN INDIVIDUAL AND ASSOCIATED DEVICE

1. A method for testing the vision of an individual (10) wearing a piece of vision-correcting ophthalmic equipment, said method including the following steps:a) placing said individual (10) at a predetermined observation distance (D1) from a displaying area (21), at which said individual (10) observes, with a natural cephalic carriage, said displaying area (21), and
b) displaying, on said displaying area (21), a visual test comprising at least one test image (22), and
c) determining, in said displaying area (21), a border (23) of zones of optimal/degraded vision of said test image (22) by the individual (10) in the configuration resulting from steps a) and b), said border (23) respectively bounding, in a visual field of said individual (10) equipped with said piece of ophthalmic equipment, a zone of optimal vision (23A) and a zone of degraded vision (23B) of said visual field, for which zones said individual (10) indicates whether he respectively sees optimally or degradedly said test image (22) of the visual test through said piece of vision-correcting ophthalmic equipment, and
d) recording a border indicator representative of said border (23) of zones of optimal/degraded vision,
wherein:
steps a) to d) are executed at least a first time, with an individual (10) equipped with a first piece of vision-correcting ophthalmic equipment, to determine a first border (23) and to record a first border indicator,
the individual (10), actually or virtually being equipped with a second piece of vision correcting ophthalmic equipment (14) that is different from said first piece of ophthalmic equipment, a second border (24) of zones of optimal/degraded vision of said test image (22) by said individual (10) is determined in said displaying area (21) in the configuration resulting from steps a) and b), said second border (24) respectively bounding a second zone of optimal vision (24A) and a second zone of degraded vision (24B) of said visual field (FOV), for which zones said individual (10) actually or virtually equipped with said second piece of ophthalmic equipment (14) indicates or is assumed to respectively see optimally or degradedly said test image (22) of the visual test,
a second border indicator representative of said second border (24) of zones of optimal/degraded vision is recorded,
said first border indicator and said second border indicator are compared, and
from the preceding comparison an optical performance of the individual (10) under the observation conditions of steps a) and b) is deduced.

US Pat. No. 10,010,994

METHOD FOR TAPING AN OPTICAL LENS MEMBER

1. A method of taping an optical lens member to be manufactured comprising:providing an optical lens member, the optical lens member comprising a first optical surface associated with a first reference system and a second optical surface to be manufactured, the first and second optical surfaces being connected by an external periphery surface, the first reference system being identified by at least one referencing element on the first optical surface and/or the external periphery surface of the optical lens member; and
providing an adhesive tape on the first optical surface of the lens member so as to cover at least part of the first optical surface and leaving the at least one referencing element uncovered,
wherein during the providing of the adhesive tape, a part of the adhesive tape, after having been placed on the first optical surface of the optical lens member, is cut off and removed so as to leave the referencing element uncovered.

US Pat. No. 9,993,150

MONITORING SYSTEM FOR MONITORING HEAD MOUNTED DEVICE WEARER

1. A monitoring system for monitoring the visual behavior of a wearer of a head-mounted device, the monitoring system comprises:at least one wearer's visual behavior sensor configured to sense at least one wearer's visual behavior data relating to the visual behavior of the wearer of the head-mounted device;
a communication unit associated with the at least one wearer's visual behavior sensor and configured to communicate said visual behavior data to a wearer information data generating unit;
a wearer information data generating unit configured to:
i) receive said wearer's visual behavior data,
ii) store said wearer's visual behavior data, and
iii) generate a wearer information data indicative of at least one of: wearer's vision or general health condition of the wearer or wearer's activity or wearer's authentication based, at least, on the evolution over time of said wearer's visual behavior data; and
the head-mounted device comprising at least one sensor adapted to measure at least one visual environment parameter of the visual environment of the wearer, and an optical function controller adapted to control the optical function of the head-mounted device, where for at least one optical parameter of the optical function of the head-mounted device:
i) during a wearer visual behavior data sensing step S1, an optical function adapting substep S1a, during which the optical parameter of the optical function is adapted and an optical parameter recording substep S1b, during which the value of the optical parameter of the optical function is recorded,
ii) a visual environment parameter measuring step S2, during which at least one visual environment parameter is measured upon the optical function adapting step S1a,
iii) a referential optical parameter determining step S3, during which a referential optical parameter is determined based on the measured value of the at least one visual environment parameter and wearer data,
iv) a wearer visual behavior data receiving step S4 during which the wearer visual behavior data are received by the data generating unit,
v) an information generating step, during which the data generating unit generates the wearer information data indicative of wearer visual behavior over time based at least on the wearer visual behavior data,wherein steps S1 to S4 are repeated over time and during the information generating step, the evolution of a difference between the referential optical parameter and the optical parameter is checked over time.

US Pat. No. 9,980,638

SYSTEMS AND METHODS FOR MEASURING REFRACTIVE ERROR AND OPHTHALMIC LENSES PROVIDED THEREFROM

1. A method for providing a prescription for a corrective ophthalmic lens for a selected individual wearer, the method comprising:using a first instrument, identifying in a first analysis a first identification factor from a plurality of parameters for evaluating an individual wearers' level of perception and control;
using a second instrument, identifying in a second analysis a second identification factor, wherein the second instrument includes equipment for objectively measuring refractive error in an eye, wherein the second analysis is performed when the first identification factor is within a predetermined value;
using a third instrument, identifying in a third analysis a third identification factor, wherein the third instrument includes equipment for subjectively evaluating refraction in an eye and refraction is evaluated using an incremental change that is lower than 0.20 diopter, or is in a range between about the nearest 0.01 diopter and about the nearest 0.20 diopter, wherein the third analysis is performed when the second identification factor is within a predetermined value; and
generating a prescription based on the refraction obtained from at least one of the second instrument and the third instrument, wherein the prescription includes at least one correction that is to the nearest 0.20 diopter, or is in a range between about the nearest 0.01 diopter and about the nearest 0.20 diopter.

US Pat. No. 9,955,864

DEVICE AND METHOD FOR MEASURING SUBJECTIVE REFRACTION

1. A device for measuring the near- and/or intermediate-vision subjective refraction of a person, the device comprising:a corrective holder configured to receive at least one corrective lens for each eye of the person;
wherein the corrective holders are moveable relative to one another to adjust a convergence angle (?) between the axes of the lenses when the corrective lenses are disposed within the corrective holders.

US Pat. No. 9,885,884

MYOPIA CONTROL OPTICAL SYSTEM

1. An optical system comprising multiple filters or multiple dyes, having a transmission pattern comprising at least a first
zone Z1 extending from 380 nm to a first limit L1 between the first zone Z1 and a second zone Z2, and a third zone Z3 extending from a second limit L2 between the second zone Z2 and the third zone Z3 to 780 nm,
wherein the first limit L1 is greater than or equal to 436 nm and the second limit L2 is greater than the first limit L1 and smaller than or equal to 487 nm;

the average transmission values T1, T2, T3, in each zone Z1, Z2, Z3 are such as:

T2>5*(T1+T3)/2, with

T1 the average transmission over the first zone Z1,

T2 the average transmission over the second zone Z2, and

T3 the average transmission over the third zone Z3,

T1 and T3 each being greater than or equal to 3% and each being smaller than 37%,

wherein the average transmission values T1 and T3 are selected such that 5*(T1+T3)/2<100%, and

wherein the transmission pattern is configured such that it provides non-zero transmission extending throughout the range
of 380 nm to 780 nm.

US Pat. No. 9,823,534

ELECTROCHROMIC SINGLE AND TWO-CORE VIOLOGENS AND OPTICAL ARTICLES CONTAINING THEM

1. A compound of formula (I):
wherein:
Z is selected from:
alkylene;
cycloalkylene; and
a bivalent groups of formula —R7—Y—R8—, wherein

R7 and R8 are each independently selected from single bond, alkylene and cycloalkylene, and

Y is selected from arylene, cycloalkylene, heteroarylene, arylene-arylene or arylene-CR?R?-arylene wherein R? and R? form
together with the carbon to which they are linked a carbocyclic group;

wherein said alkylene, cycloalkylene, arylene, heteroarylene and carbocyclic groups may be substituted by one or more substituents
selected from halogen, alkyl, alkoxy, alkylthio, hydroxyalkyl, acyloxy, cycloalkyl, aryl, substituted aryl, aryloxy, heteroaryl
and substituted heteroaryl;

wherein said alkylene, cycloalkylene, arylene, heteroarylene and carbocyclic groups may be substituted by one or more substituents
selected from halogen, alkyl, alkoxy, alkylthio, hydroxyalkyl, acyloxy, cycloalkyl, aryl, substituted aryl, aryloxy, heteroaryl
and substituted heteroaryl;

m is 0 or 1;
R1 and R2 are each independently selected from optionally substituted phenyl of formula (II):

wherein Ra, Rb, Rc, Rd and Re are each independently selected from:
H, halogen, cyano, nitro, alkyl, haloalkyl, haloalkoxy, (haloalkoxy)alkyl, arylalkyl, cycloalkyl, (cycloalkyl)alkyl and (heterocycloalkyl)alkyl,
alkenyl, alkynyl, allyl, vinyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, —N(aryl)2, —N(aryl)CO(aryl), —CO-aryl and —CO-substituted aryl;

—OR9, —SR9, —S(O)R9, —S(O2)R9, —S(O2)NR9R10, —NR9R10, —NR9COR10, —NR9CO(aryl), —NR9aryl, —CH2OR9, —CH2SR9, —CH2R9, —CO—R9 and —CO2R10 wherein R9 and R10 are independently selected from H, alkyl, haloalkyl, arylalkyl, cycloalkyl, cycloalkylalkyl and heterocycloalkylalkyl;

—S(O2)NR11R12 and —NR11R12, wherein R11 and R12 form together with the nitrogen atom to which they are linked a saturated 5 to 7 membered heterocycloalkyl which may comprising
in addition to the nitrogen atom one further heteroatom selected from oxygen, nitrogen and sulfur, and which may be optionally
substituted by one or two groups, identical or different, selected from halogen, —R9, —OR9, and —NR9R10, wherein R9 and R10 are as defined above;

—V—W—R13 wherein:

V is selected from oxygen, —N(R9)—, sulfur, —S(O)— and —S(O2)— wherein R9 is as defined above;

W is alkylene, which may be substituted by a group selected from halogen and alkoxy; and
R13 is selected from —OR9, —NR9(alkyl) and —SR9 wherein R9 is as defined above; and

OC(O)—R14 wherein R14 is selected from alkyl, haloalkyl, alkenyl, —W—R13, and aryl group which may be substituted by 1 to 4 groups selected from halogen, —R9, —OR9, —SR9, —NR9R10, —NR11R12, —CO—R9, —CO2R9 wherein R9, R10, R11, R12, R13 and W are as defined above,
with the provisions that:
when Y is arylene-arylene or arylene-alkylene-arylene, then R1 and R2 are not phenyl;

when m is 0, then Re is H and at least one of Ra, Rb Rc and Rd is not H and may be independently selected from cyano, nitro, hydroxyl, C4-C12 alkyl, haloalkyl, alkoxy, haloalkoxy, alkoxycarbonyl, cycloalkyl, allyl, aryl and heteroaryl;

R3, R4, R5 and R6 are each independently selected from H, alkyl, alkoxy, alkylthio, haloalkyl, haloalkoxy, haloalkylthio, polyalkylenoxy, alkoxycarbonyl,
aryl, substituted aryl, heteroaryl and substituted heteroaryl, wherein the alkyl group may be substituted by one or more substituents
selected from alkoxy, cycloalkyl, aryl, substituted aryl, heteroaryl and substituted heteroaryl;

n, p, q and r are each independently an integer from 0 to 4, wherein when n, p, q and r are two or more, each of the R3, each of the R4, each of the R5 or each of the R6 may be identical or different; and

X? is a counterion.

US Pat. No. 9,802,287

SYSTEM COMPRISING A POSITIONING AND CENTERING PIN FOR AN OPHTHALMIC LENS, AN ATTACHMENT MEMBER AND A TOOL FOR POSITIONING SAID ATTACHMENT MEMBER ON SAID POSITIONING AND CENTERING PIN

1. A system comprising a positioning and centering pin (4; 104; 204; 304) for an ophthalmic lens (2), said positioning and centering pin (4; 104; 204; 304) being configured to be attached to said ophthalmic lens (2), and an attachment member (5; 105; 205; 305) configured to be positioned on said positioning and centering pin (4; 104; 204; 304) and to be attached to the latter and also to be attached to said ophthalmic lens (2), characterized in that said system also has a tool (20; 120; 220; 320) for positioning said attachment member (5; 105; 205; 305) on said positioning and centering pin (4; 104; 204; 304), said tool (20; 120; 220; 320) having a body (42; 142; 242; 342) provided with at least one receiving recess configured to at least partially receive at least one of said attachment member
(5; 105; 205; 305) and said positioning and centering pin (4; 104; 204; 304), at least one centering member (48, 56; 148, 156; 257) for centering said attachment member (5; 105; 205; 305), and at least one guiding member (48, 57; 148, 157; 256) for guiding said positioning and centering pin (4; 104; 204; 304); said recess, said at least one centering member (48, 56; 148, 156; 257) and said at least one guiding member (48, 57; 148, 157; 256) being configured such that, when said attachment member (5; 105; 205; 305) and said positioning and centering pin (4; 104; 204; 304) are mounted on said tool (20; 120; 220; 320), said attachment member (5; 105; 205; 305) is centered with respect to said body (42; 142; 242; 342) and said positioning and centering pin (4; 104; 204; 304) is guided with respect to said body (42; 142; 242; 342); by virtue of which said attachment member (5; 105; 205; 305) is positioned in a predetermined position on said positioning and centering pin (4; 104; 204; 304).

US Pat. No. 9,791,598

ARTICLE HAVING COATING ON SUBSTRATE, COATING COMPOSITION, AND COATING METHOD

NIKON CORPORATION, Tokyo...

1. An article having a coating on a substrate, wherein the coating comprises:
(a) a polyhedral oligomeric silsesquioxane; and
(b) an acrylate polymer having a structural unit represented by the following general formula (II):
where Ra represents a hydrogen atom or a methyl group, Rf represents —CH2—(CF2)q—CF3 or —CH(CF3)2, and q represents an integer of 0 to 8,
wherein the coating comprises the polyhedral oligomeric silsesquioxane at least in the following proportion X:
the proportion X refers to, in “profile where as the proportion of the polyhedral oligomeric silsesquioxane increases, a liquid
droplet sliding angle on a surface of a coating film decreases or temporarily increases and then decreases, but a change in
the decrease gradually becomes smailler,” a proportion at a starting point at which the change becomes smaller.

US Pat. No. 9,720,262

METHOD OF PROCESSING AN ORDER REQUEST FOR AN OPHTHALMIC LENS

1. A method of processing an order request for an ophthalmic lens to be manufactured by a manufacturing device, comprising:
an order request receiving step (S1), during which an order request comprising at least information related to an ophthalmic
wearer's prescription is received directly by a first processing device;

an order request processing step (S2), during which the order request is processed by the first processing device on the basis
of predetermined processing rules so as to obtain manufacturing parameters to be applied to the manufacturing device so as
to manufacture the ophthalmic lens according to the information comprised in the order request;

a routing step (S3), during which manufacturing parameters identified as requiring a further modification step are sent to
and stored in a storing device, and other manufacturing parameters not identified as requiring a further modification step
are sent to the manufacturing device;

a parameter modification step (S4), during which the manufacturing parameters stored in the storing device are processed by
a second processing device on the basis of predetermined modifying rules so as to obtain modified manufacturing parameters
to be applied to the manufacturing device so as to manufacture an ophthalmic lens according to the information comprised in
the order request and modifying information; and

sending the modified manufacturing parameters to the manufacturing device.

US Pat. No. 9,706,909

APPARATUS FOR DETERMINING THE DOMINANT EYE

1. An apparatus for implementing a method for determining the dominant eye of a spectacle wearer (1), comprising a target (2), a means (3, 4) for occulting at least one eye, and a sighting device (5, 50) equipped with an optical window (6), wherein the sighting device (5, 50) comprises an electronic sensor making it possible to identify a movement of said sighting device (5, 50), during said method during various steps of viewing the target (2).

US Pat. No. 9,625,743

METHOD OF PREPARING AN OPHTHALMIC LENS FITTED WITH A MEMORY MARK

1. A method of preparing an ophthalmic lens (20) for mounting in an eyeglass frame (10), comprising the steps of:
preparing the ophthalmic lens for a client;
marking the ophthalmic lens with centering marks (24, 27);

marking an optical face (22) of the ophthalmic lens with a visible memory mark (28) comprised of a code that stores, in digital form, information of geometrical and optical characteristics of the prepared
ophthalmic lens;

capturing a raw image of at least a portion of said optical face (22) of the ophthalmic lens (20), said raw image including an image of said memory mark (28) and of the centering marks (24, 27) of the ophthalmic lens (20), said memory mark being separate and distinct from said centering marks, said memory mark storing numerical information
in non-numerical form;

decoding the information stored in the code of the memory mark by processing the acquired raw image; and
centering the ophthalmic lens (20) as a function of the position of said centering marks (24, 27) on the raw image, and shaping said ophthalmic lens (20) as a function of the decoded information from the code of the memory mark.

US Pat. No. 9,513,494

METHOD FOR MANUFACTURING A CORRECTIVE OPHTHALMIC GLASSES LENS PERSONALISED FOR A WEARER

1. A method for manufacturing a corrective ophthalmic spectacle lens personalized for a wearer, comprising the steps of:
defining and recording, by computer, configuration parameters of the lens, these configuration parameters comprising optical
design parameters of the lens, including a refraction correction prescription for the wearer and an optical design model,

manufacturing the lens in accordance with the configuration parameters,
wherein, to define the configuration parameters of the lens, the method comprises the following steps:
recording a plurality of ordered sequences of execution of various interactive configuration parts of code of a computer program,
and selection, from among the plurality of ordered sequences, of one part of code according to which the modules are executed,
each part of code being associated with one of the configuration parameters and comprising, in a graphical interface, a pop-up
menu or area selectable by pressing the computer mouse-button for selection of at least one configuration parameter value
associated with the module from among a preselection of values of this parameter, a graphical interface and scripts configured
for graphical simulation of a virtual lens obtained with the selected value of the configuration parameter, a pop-up menu
or area selectable by pressing the computer mouse-button for validation of the selection of a value of the configuration parameter,

executing said ordered sequence selected at the previous step;
on completion of the execution of each part of code of said ordered sequence selected, recording the selected and validated
value of the configuration parameter associated with this module;

selecting of at least one view of the wearer and display of said view of the wearer as background layer of an area of the
graphical interface;

simulating by an image of a corrective filter associated with the selected value of the configuration parameter of the lens;
displaying of the image of the corrective filter superimposed by transparency on said view of the wearer as background layer
of said area of the graphical interface, so as to simulate the lens as worn by the wearer, said lens being personalized in
accordance with the selected value of the configuration parameter associated with said ordered sequence;

executing another ordered sequence;
on completion of the execution of each module of said another ordered sequence selected, recording another selected and validated
value of another configuration parameter associated with said another ordered sequence;

displaying of said view of the wearer as a second background layer of a second area of said graphical interface;
simulating by a second image of a second corrective filter associated with the selected value of said another configuration
parameter of another lens; and

displaying of the second image of the second corrective filter superimposed by transparency on said view of the wearer as
background layer of the second area of said graphical interface, so as to simulate said another lens as worn by the wearer,
said another lens being personalized in accordance with the selected value of said another configuration parameter, so as
to allow the comparison of at least two personalized virtual lenses as appearing when worn by the wearer.

US Pat. No. 9,116,365

METHOD FOR DETERMINING AT LEAST ONE GEOMETRIC/PHYSIOGNOMIC PARAMETER ASSOCIATED WITH THE MOUNTING OF AN OPHTHALMIC LENS IN A SPECTACLE FRAME WORN BY A USER

1. A method for determining at least one geometric/physiognomic parameter associated with the mounting of an ophthalmic lens
in a spectacle frame worn by a user, comprising the following steps:
a) placing an accessory on the user's head, said accessory comprising at least one brightness calibration element, said brightness
calibration element including at least two contrasted zones;

b) capturing an image of the user's head on which said accessory has been placed, using an image capture device;
c) determining the position of the image of the brightness calibration element of said accessory on said image captured in
step b);

d) determining a measured value of the brightness of at least one part of the image of this brightness calibration element;
e) modifying a parameter for adjusting the optical image-acquisition conditions of said image capture device as a function
of this measured value in such a way as to improve the contrast of the image of the contrasted zones of the calibration element;

f) capturing another image with the modified parameter for adjusting the optical acquisition conditions; and
g) determining said looked-for geometric/physiognomic mounting parameter on the basis of this other image.