US Pat. No. 9,288,865

EXPERT SYSTEM FOR ESTABLISHING A COLOR MODEL FOR AN LED-BASED LAMP

LUMENETIX, INC., Scotts ...

1. A method comprising:
characterizing a plurality of light-emitting diode (LED) strings experimentally by:
driving each of the LED strings in an LED-based lamp using a configurable driver controller, each of the LED strings comprising
one or more LEDs that are adapted to emit the same color or substantially the same color, and

measuring spectral density functions of the LED strings at defined operating temperatures through defined driver settings
of the configurable driver controller; and

using an color model inference engine implemented in a computer system to develop a color model for the LED-based lamp based
on the measured spectral density functions,

wherein the color model includes driving currents for each of the plurality of LED strings in the LED-based lamp associated
with a correlated color temperature (CCT) for the light generated by the LED-based lamp.

US Pat. No. 9,143,697

LIGHTING AND CONTROL SYSTEMS AND METHODS

LUMENETIX, INC., Scotts ...

1. A method of configuring a lighting system comprising:
driving light emitters of different colors to produce an illumination experience, the light emitters in a lighting node;
detecting a color composition from the light emitters via a remote optical sensor on a remote control device;
comparing the color composition with a color profile stored on a memory of the remote control device; and
adjusting at least one of the light emitters until the detected color composition substantially matches the color profile,
wherein the adjusting is based on a re-calibration command sent from the remote control device; and wherein the color profile
is based on a previous color adjustment command sent from the remote control device wherein, since the previous color adjustment
command is last sent, the illumination experience produced by the light emitters having de-calibrated.

US Pat. No. 9,743,473

CASCADE LED DRIVER AND CONTROL METHODS

LUMENETIX, INC., Scotts ...

1. A device for controlling a circuit in communication with a plurality of light emitting elements, the device comprising:
a clock to generate a cyclic signal at a clock frequency;
a divider to slow down the cyclic signal;
a register configured to store a stored value;
an accumulator configured to store an accumulator value;
a plurality of drivers for the plurality of light emitting elements; and
a waveform generator configured to generate a digital waveform based on successive additions of the stored value to the accumulator
value, wherein the digital waveform is provided to the plurality of drivers corresponding to the plurality of light emitting
elements; and

wherein each driver of the plurality of drivers includes:
a gate driver configured to receive a respective digital waveform from the waveform generator;
a cascade driver coupled to the gate driver, wherein the cascade driver includes at least a capacitor;
wherein the cascade driver provides continuous electrical current to a corresponding light emitting element of the plurality
of light emitting elements at a respective current ratio dictated by the respective digital waveform.

US Pat. No. 9,102,857

METHODS OF SELECTING ONE OR MORE PHASE CHANGE MATERIALS TO MATCH A WORKING TEMPERATURE OF A LIGHT-EMITTING DIODE TO BE COOLED

LUMENETIX, INC., Scotts ...

8. A method, comprising:
selecting one or more phase change materials (PCMs) to cool a light emitting diode (LED);
placing a plurality of containers in thermal contact with the LED, placing the one or more PCMs in at least one of the plurality
of containers and providing water in at least one of the remaining of the plurality of containers;

absorbing and storing a first portion of heat generated by the LED during its operation in the one or more PCMs;
convecting a second portion of the heat generated by the LED during operation; and
dissipating the heat absorbed by the one or more PCMs after the LED is turned off,
wherein the one or more PCMs are selected based upon heat storage capabilities of the one or more PCMs, and
operating the LED in a cyclical application.

US Pat. No. 9,332,612

SYSTEM AND METHOD FOR RAPIDLY GENERATING COLOR MODELS FOR LED-BASED LAMPS

LUMENETIX, INC., Scotts ...

1. A computer-implemented method of generating a color model to drive a color tunable lamp having multiple color channels,
the method comprising:
selecting a reference light source type for the color model to emulate at a target color point produced by the reference light
source types defined by a color parameter;

computing reference tristimulus values of the reference light source including tristimulus values corresponding to specific
color cards;

measuring spectral power over sample steps in an operating range at one or more temperature points of each color channel in
the color tunable lamp;

generating a source state record of the each color channel including component tristimulus values of the each color channel;
dividing the multiple color channels into one or more non-floating channels and one or more floating channels;
traversing in steps through operating points of the non-floating channels corresponding to the source state record to inversely
solve for lumens values of the floating channels by assuming the non-floating channels are set to specific operating points
according to each step in the traversing;

and
defining the color model based on the inversely solved lumens values when a gamut area, defined by the floating channels at
the inversely solved lumens values;

wherein the non-floating channels at the specific operating points according to the each step includes the target color point.

US Pat. No. 9,133,989

MECHANICAL ATTACHMENT SYSTEM FOR LINEAR LIGHT MODULES

LUMENETIX, INC., Scotts ...

1. A lighting system comprising:
a plurality of lighting modules, wherein each lighting module includes:
a lighting source;
a light guide configured to couple light generated by the lighting source and to emit the light in an elongated configuration
along a length of the light guide;

a housing for the lighting source and the light guide;
a plurality of clips to mechanically couple the plurality of lighting modules,
wherein the plurality of lighting modules are modular building blocks for the lighting system.

US Pat. No. 9,175,816

SYSTEM AND METHOD FOR MIXING LIGHT FOR A LED-BASED LINEAR LIGHT SOURCE

LUMENETIX, INC., Scotts ...

1. A linear light source comprising:
electronic circuitry to drive light emitting diodes (LEDs);
a plurality of LEDs coupled to the electronic circuitry, the LEDs with more than one color type;
a light pipe positioned to provide total internal reflection (TIR) of light rays emitted from the plurality of LEDs at light
ray angles larger than a critical angle with respect to a normal vector of a surface of the light pipe; and

a shell with a highly reflective inner surface over and along the light pipe, wherein the shell and the highly reflective
inner surface are spaced apart with an air gap from the light pipe and conform to the shape of the light pipe;

wherein the shell has an exit aperture along a pipe axis of the light pipe, wherein the exit aperture is an opening in the
shell and in the highly reflective inner surface along the pipe axis; and

wherein the light pipe has cut outs aligned across from the exit aperture, each of the cut outs having a slanted surface,
wherein the light pipe is a cylinder with an elliptical cross-section having a first focal point and a second focal point,
wherein an interface surface of at least one of the cut outs is aligned to the first focal point.

US Pat. No. 9,353,918

SYSTEM AND METHOD FOR COMMUNICATION AMONG LINEAR LIGHT MODULES IN A LIGHTING SYSTEM

LUMENETIX, INC., Scotts ...

1. A system comprising:
a first lighting module having a first printed circuit board assembly (PCBA), wherein the first PCBA has a first distal connector;
a second lighting module having a second PCBA, wherein the second PCBA has a second near connector and a second distal connector;
and

a first cable configured to couple the first distal connector to the second near connector,
wherein the first lighting module and the second lighting module each have a lighting source and a light guide for coupling
light from the lighting source and emitting the light in a linear configuration along a length of the light guide,

wherein the light guides of the first and second lighting modules are positioned to form one continuous linear configuration
of emitted light from the first and second lighting modules

wherein the first lighting module has a first receiver to receive a command from an external source, and further wherein the
first lighting module is configured to send the received command to the second lighting module via the first cable; and

wherein the second lighting module has a second receiver to receive the command from the external source, and further wherein
the second lighting module is configured to send the received command to the first lighting module.

US Pat. No. 9,060,409

MOBILE DEVICE APPLICATION FOR REMOTELY CONTROLLING AN LED-BASED LAMP

LUMENETIX, INC., Scotts ...

1. A method of operating a mobile device to control a light-emitting diode (LED)-based lamp, comprising:
providing a user interface to be displayed to a user, wherein the user interface includes:
a first control for selecting a lamp,
a second control for capturing with a sensor a target light having a target spectrum, and
a third control for initiating generation by the lamp a light having a light spectrum that substantially matches the target
spectrum;

receiving a lamp command through the user interface to select a preferred lamp;
receiving a capture command through the user interface to capture the target light at the sensor;
receiving a reproduction command through the user interface to generate the target spectrum with the preferred lamp; and
transmitting the received commands from the mobile device to an external controller,
wherein the external controller is configured to communicate with the preferred lamp to determine an operating point of the
preferred lamp that generates light having a light spectrum substantially matching the target spectrum.

US Pat. No. 9,565,734

SYSTEM AND METHOD FOR RAPIDLY GENERATING COLOR MODELS FOR LED-BASED LAMPS

LUMENETIX, INC., Scotts ...

1. A computer-implemented method of generating a color mixing model, the method comprising:
dividing multiple color channels into one or more non-floating channels and one or more floating channels;
inversely-solving one or more lumens values of the floating channels at an operating point of the non-floating channels corresponding
to a source state record based on measured spectral characteristics of the non-floating channels;

determining whether a gamut area, defined by the inversely-solved lumens values of the floating channels and the operating
point of the non-floating channels, includes a target color point; and

responsive to determining that the gamut area includes the target color point, defining an entry in the color mixing model
mapped to the target color point based on the inversely-solved lumens values; and

wherein the entry in the color mixing model instructs a color-tunable lamp to produce the target color point by driving the
multiple color channels according to the inversely-solved lumens values and the operating point of the non-floating channels.

US Pat. No. 9,089,032

SYSTEM AND METHOD FOR COLOR TUNING LIGHT OUTPUT FROM AN LED-BASED LAMP

LUMENETIX, INC., Scotts ...

1. A method of performing a search in a one-dimensional search space within chromaticity space quantifying illumination, the
method comprising:
providing a target illumination spectrum and an illumination search space;
configuring a predetermined distance threshold from the target illumination spectrum; and
narrowing the illumination search space to match the target illumination spectrum by:
selecting by a processor a plurality of points in the illumination search space, wherein the plurality of points correspond
to operating levels of light emitting diodes (LEDs) in an LED-based lamp;

determining by the processor a preferred point from the plurality of selected points, wherein the preferred point corresponds
to a light generated by the LED-based lamp that has a lamp spectrum closest to the target illumination spectrum out of the
plurality of points;

discarding by the processor a portion of the illumination search space that does not include the preferred point, wherein
the discarded portion of the illumination search space is at least a buffer zone away from the preferred point; and

iterating by the processor the narrowing of the illumination search space in a remaining narrowed search space until one of
the selected points provides a final lamp spectrum within the predetermined distance threshold of the target illumination
spectrum.

US Pat. No. 9,648,696

RECALIBRATION OF A TUNABLE LAMP SYSTEM

LUMENETIX, INC., Scotts ...

1. A computer-implemented method of operating a model builder system for enabling recalibration of a tunable light system,
comprising:
generating a color mixing plan for a tunable light module having multiple lamps of at least two colors, wherein the color
mixing plan includes coefficients used to determine how to drive each of the lamps to produce an output illumination of the
tunable light module, the coefficients associated with the output illumination having a particular color characteristic;

selecting a constraint of a performance metric of illumination produced from the tunable light module;
estimating a degradation level of a lamp in the tunable light module;
computing alternative coefficients for the color mixing plan for the estimated degradation level based on at least the constraint;
and

storing the alternative coefficients, associated with the estimated degradation level, in the tunable light module.

US Pat. No. 10,098,199

ARCHITECTURES FOR LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS

LUMENETIX, INC., Scotts ...

1. A lamp control system comprising:a logic module that includes
an interface configured to couple with a lighting source having multiple color channels,
non-volatile memory configured to store a color model,
a processor configured to compute flux ratios from the multiple color channels based on the color model, and
a control signal driver configured to send the computed flux ratios as control signals to the lighting source via the interface; and
a light emitting diode-based (LED-based) lamp that includes
an interface configured to couple with the logic module,
two or more color strings, each color string comprising one or more light emitting diodes (LEDs) of a substantially similar color,
non-volatile memory configured to store at least one spectral power density (SPD) distribution summary characterizing each color string,
an optical sensor configured to measure brightness levels of the two or more color strings, and
a processor configured to send at least a subset of the measured brightness levels and the SPD distribution summaries to the logic module via the interface.

US Pat. No. 10,149,365

RECALIBRATION OF A TUNABLE LAMP SYSTEM

LUMENETIX, INC., Scotts ...

1. A tunable light module comprising:a memory storing a color mixing plan;
multiple lamps of at least two colors;
a light sensor configured to measure a light characteristic of each lamp of the multiple lamps; and
control circuitry configured to:
drive a lamp of the multiple lamps to produce a colored light according to the color mixing plan that corresponds to a correlated color temperature (CCT);
cause the light sensor to measure the light characteristic of the lamp;
detect a degradation level by comparing the measured light characteristic against an expected light characteristic stored in the memory; and
adjust a current level for driving the lamp at the CCT by referencing the color mixing plan and an alternative coefficient corresponding to the degradation level,
wherein the alternative coefficient is pre-computed, part of the color mixing plan, and stored in the memory, and
wherein the alternative coefficient is associated with the detected degradation level prior to deployment of the tunable light module.

US Pat. No. 10,015,855

DITHERING AND DIMMING TECHNIQUES FOR LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS

LUMENETIX, INC., Scotts ...

1. A dimming system comprising:a color string that includes one or more light emitting diodes (LEDs) of a substantially similar color;
an adjustable current source configured to provide an electric current to the color string,
wherein the adjustable current source has a minimum threshold level at which the adjustable current source is able to provide the electric current without producing leakage current;
an analog micro-pulse generator configured to provide an electric current pulse to the color string at an order smaller than the minimal threshold level;
a shunt circuit configured to short a current source at a specified frequency; and
a controller that configures the adjustable current source, the analog micro-pulse generator, the shunt circuit, or a combination thereof based on a dimming level specified by a user,
wherein, when the dimming level falls within a first dimming range, the controller configures the adjustable current source to drive the color string at an output level between a maximum threshold level and the minimum threshold level, and
wherein, when the dimming level falls within a second dimming range lower than the first dimming range, the controller configures the adjustable current source to drive the color string at an output level matching the minimum threshold level and the shunt circuit to modulate the output level at a first frequency proportional to the dimming level.

US Pat. No. 10,440,796

OPTICAL AND MECHANICAL MANIPULATION OF LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS

LUMENETIX, LLC, Scotts V...

1. A lighting device comprising:a circuit board having
an upper surface that extends from a first end to a second end,
a lower surface opposite the upper surface, and
opposing sidewalls extending from the upper surface to the lower surface;
a plurality of light-emitting diodes (LEDs) arranged in a single-line linear array along the upper surface of the circuit board,
wherein the plurality of LEDs includes LEDs of at least three different colors; and
a first optical terminator that overhangs over a first outmost LED at the first end of the circuit board such that the first outmost LED is positioned within a tetrahedral cavity of the first optical terminator,
wherein the first optical terminator is configured to redirect light from the first outmost LED along an axis of the linear array.

US Pat. No. 10,303,920

TECHNIQUES FOR CREATING CHARACTERIZATION MATRICES FOR REFLECTANCE, ILLUMINANCE, OR SENSOR RESPONSE

LUMENETIX, INC., Scotts ...

1. A method for creating a reflectance characterization matrix, the method comprising:illuminating training reflectances by producing a series of colored flashes by sequentially illuminating each color channel of a multi-channel light source;
causing a series of images to be captured by a multi-channel image sensor in conjunction with the series of colored flashes;
calculating a training fingerprint for each pixel of each image of the series of images;
setting up linear regression using the training fingerprints and the training reflectances; and
forming a reflectance characterization matrix by performing multiple linear regression for each wavelength within a predetermined spectrum.

US Pat. No. 10,346,670

FULL-SPECTRUM FLASH FOR ELECTRONIC DEVICES

LUMENETIX, INC., Scotts ...

1. A method for capturing an image, the method comprising:accessing a database that associates one or more color mixing models with previously recorded spectral properties of a multi-channel light source,
wherein the multi-channel light source includes at least three color channels, each of which includes one or more illuminants configured to produce a substantially similar color;
characterizing a spectral property of the multi-channel light source by
producing a series of flashes in which each color channel is separately illuminated,
causing a series of images to be captured in conjunction with the series of flashes,
identifying a spectral characteristic of each color channel by examining the image in the series of images that is associated with the corresponding flash, and
examining the spectral characteristics to discover the spectral property of the multi-channel light source;
identifying an appropriate color mixing model from among the one or more color mixing models based on the spectral property; and
simultaneously driving the at least three color channels by separately addressing each color channel in accordance with the appropriate color mixing model, thereby causing the multi-channel light source to produce a flash of white light having a particular correlated color temperature (CCT).

US Pat. No. 10,602,596

ARCHITECTURES FOR LIGHT EMITTING DIODE (LED) LIGHTING SYSTEMS

Lumenetix, LLC, Scotts V...

1. A system comprising:a lamp unit that includes multiple color strings,
wherein each color string of the multiple color strings includes one or more light-emitting diodes (LEDs) of a substantially similar color;
a control unit that includes
a memory configured to store a color model,
a processor configured to compute flux ratios for the multiple color strings based on the color model, and
a control driver configured to send the computed flux ratios to the lamp unit as a control signal; and
a cable coupled between an interface of the lamp unit and an interface of the control unit.

US Pat. No. 10,772,174

RECALIBRATION OF A TUNABLE LAMP SYSTEM

Lumenetix, LLC, Scotts V...

1. A tunable light module, comprising:a memory storing a color mixing plan;
a lamp of a color;
a light sensor configured to measure a light characteristic of the lamp; and
control circuitry configured to:
drive the lamp to produce a colored light according to the color mixing plan that corresponds to a correlated color temperature (CCT);
cause the light sensor to measure a light characteristic of the lamp;
detect a degradation level by comparing the measured light characteristic against an expected light characteristic stored in the memory, the expected light characteristic being part of the color mixing plan;
adjust a current level for driving the lamp at the CCT by referencing the color mixing plan and an alternative coefficient corresponding to the degradation level; and
in response to determining that the detected degradation level has no pre-computed alternative coefficient saved in the memory, interpolate between alternative coefficients associated with nearby degradation levels proximate to the detected degradation level to derive the alternative coefficient used to adjust the current level,
wherein the color mixing plan specifies a driving condition for the lamp to achieve a color characteristic at a particular operational temperature.