US Pat. No. 9,571,817

INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An inspection apparatus comprising:
an illumination section for illuminating an inspection target in accordance with a photometric stereo method;
an imaging section for receiving reflective light from the illuminated inspection target to generate a luminance image in
accordance with the photometric stereo method;

a computing section for calculating a normal vector of a surface of the inspection target from a plurality of luminance images
acquired by the imaging section, generating an inclination image made up of pixel values based on the normal vector calculated
from the plurality of luminance images and at least one reduced image of the inclination image, and performing synthesis processing
of synthesizing at least two images out of the inclination image and the at least one reduced image, to generate an inspection
image showing a surface shape of the inspection target;

a determination section for determining defectiveness/non-defectiveness of the inspection target by using the inspection image;
and

a setting section for setting a characteristic size which is a parameter for giving weight to a component of the reduced image
at the time of performing the synthesis processing,

wherein the computing section generates a different inspection image in accordance with the characteristic size set by the
setting section.

US Pat. No. 9,182,356

IMAGE PROCESSING APPARATUS

Keyence Corporation, Osa...

1. An image processing sensor, comprising:
an imaging unit for acquiring a first image of a region including an inspection object;
a focus adjustment mechanism for adjusting a focus position of the imaging unit on the inspection object;
an image processing unit for executing image processing with the first image acquired by the imaging unit;
an inspection condition data setting portion for setting a plurality of pieces of inspection condition data concerning a condition
for inspecting the inspection object, each of the plurality of pieces of inspection condition data comprising a plurality
of setting items including parameters used for image processing to be executed by the image processing unit and focus position
data concerning an operation of the focus adjustment mechanism;

a memory for storing the plurality of pieces of inspection condition data set by the inspection condition data setting portion;
a control unit for controlling the operation of the focus adjustment mechanism based on focus position data included in a
selected inspection condition data from the plurality of pieces of inspection condition data and for outputting an inspection
result based on image processing with parameters included in the selected inspection condition data from the plurality of
pieces of inspection condition data; and,

an inspection condition switching instruction accepting portion for accepting a switching instruction for switching the selected
inspection condition data to another inspection condition data to be selected; whereby,

when the switching instruction is accepted by the inspection condition switching instruction accepting portion, the control
unit controls the operation of the focus adjustment mechanism based on focus position data included in said another inspection
condition data read from the memory and the image processing unit receives a second image acquired by the imaging unit based
on the focus position data included in said another inspection condition data and executes image processing with the second
image based on parameters included in said another inspection condition data read from the memory.

US Pat. No. 9,068,821

OPTICAL MEASURING DEVICE WITH POSITIONAL DISPLACEMENT DETECTION

Keyence Corporation, Osa...

1. An optical measuring device comprising:
a light projecting unit configured to project light into a measurement space in which a measurement object is to be placed,
the light being projected in parallel to a first direction;

a first light receiving unit and a second light receiving unit each configured to output a signal indicating a received light
amount;

a first optical system having a first focus within the measurement space, and configured to direct the light projected from
the light projecting unit and passing through the measurement space toward the first light receiving unit;

a second optical system having a second focus within the measurement space, and configured to direct the light projected from
the light projecting unit and passing through the measurement space toward the second light receiving unit, the second focus
being at a position different from a position of the first focus in the first direction; and

a control unit configured to calculate a position of the measurement object in a second direction based on the signal outputted
from the first light receiving unit, the second direction intersecting the first direction, wherein

the control unit determines whether the measurement object is in a first state, a second state, or a third state based on
the signals outputted from the first light receiving unit and the second light receiving unit, the first state being a state
in which the measurement object is positioned on a side closer to the light projecting unit with respect to the first focus
in the first direction, the second state being a state in which the measurement object is positioned on a side away from the
light projecting unit with respect to the first focus, the third state being a state in which the measurement object is positioned
at the first focus.

US Pat. No. 9,341,579

DEFECT DETECTION APPARATUS, DEFECT DETECTION METHOD, AND COMPUTER PROGRAM

Keyence Corporation, Osa...

1. A defect detection apparatus for detecting a defect on an imaged object surface having a background pattern from a multi-valued
image captured by an imaging device, the defect detection apparatus comprising:
a size setting and accepting device for accepting a setting of a size of a defect as a detection object;
a size storing device for storing the size of the defect for which the setting has been accepted by the size setting accepting
device;

a direction instruction accepting device for accepting an instruction in relation to a first direction of the background pattern,
wherein the background pattern has a uniformly continuous pattern in at least one direction;

a direction storing device for storing the first direction for which the instruction has been accepted by the direction instruction
accepting device;

an image reducing device for generating a reduced image, the reduced image being reduced from the multi-valued image in the
first direction of the background pattern, which is stored in the direction storing device and the reduced image being reduced
such that a reduction ratio in the first direction is different from a reduction ratio in a second direction which is perpendicular
to the first direction, with an image reduction ratio according to the size of the stored defect;

a filter processing device for performing filter processing in the first direction on the reduced image for removing a defect
in the reduced image;

an image enlarging device for generating a first enlarged image obtained by enlarging the reduced image, subjected to the
filter processing by the filter processing device, in the first direction with an image enlargement ratio corresponding to
the reciprocal of the image reduction ratio; and

a difference calculating device for generating a difference image by calculating a difference between the multi-valued image
and the first enlarged image.

US Pat. No. 9,383,569

MAGNIFICATION OBSERVATION DEVICE

Keyence Corporation, Osa...

1. A magnification observation device which images an object to display an image of the object, comprising:
a placement unit on which the object is mounted;
an imaging unit for imaging the object mounted on the placement unit to capture a plurality of first image data;
a processing unit for generating a plurality of focus position data indicating a position of an observation surface of the
object in a light-axis direction of the imaging unit at a plurality of different positions in the direction perpendicular
to the light-axis direction of the imaging unit, based on the plurality of pieces of first image data captured by the imaging
unit with the focus position of the imaging unit relatively different in the light-axis direction of the imaging unit by a
moving operation that moves at least one of the imaging unit and the placement unit along the light-axis direction of the
imaging unit;

a memory for storing a region presentation image based on the plurality of first image data and the plurality of focus position
data associated with each other, the plurality of focus position data corresponding to a plurality of different regions within
the region presentation image wherein the region presentation image is either extracted from the plurality of first image
data or is synthesized from the plurality of first image data;

a display unit for displaying the region presentation image stored in the memory;
an operation unit for designating a specified region of a part of the region presentation image displayed by the display unit
as an observation object region;

and a control unit for moving the placement unit in the direction perpendicular to the light-axis direction of the imaging
unit to a position corresponding to the observation object region designated by the operation unit, and for performing a focusing
operation controlling at least one of the imaging unit and the placement unit based on the focus position data stored in the
memory and included in the observation object region designated by the operation unit.

US Pat. No. 9,046,757

MOVING IMAGE PICKUP APPARATUS, METHOD FOR OBSERVING MOVING IMAGE, MOVING IMAGE OBSERVING PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM

Keyence Corporation, Osa...

1. A moving image pickup apparatus to pick up a moving image of one or more objects as an imaging target, comprising:
a high-speed camera configured to obtain an input moving image composed of a plurality of frames, the input moving image including
a cyclic scene of the one or more object(s);

a processor configured to calculate a characteristic amount of each frame or each frame group from the input moving image
obtained by the high-speed camera, to automatically select an image from each frame or each frame group of the input moving
image obtained by the high-speed camera on the basis of the characteristic amount as a representative image representing a
cycle,

to select
a standard timing based on the representative image in order to divide the input moving image into each cycle, and to divide
the input moving image into each cycle on the basis of the standard timing, wherein the processor is configured further to
adjust a position of the cycle backward and forward prior to the input moving image being divided into each cycle; and

a display configured to display the input moving image divided into each cycle on the basis of the standard timing.

US Pat. No. 9,404,739

SHAPE MEASURING DEVICE, PROGRAM INSTALLED INTO THIS DEVICE, AND RECORDING MEDIUM STORING THIS PROGRAM

Keyence Corporation, Osa...

1. A shape measuring device comprising:
a light receiving section that has an observation center axis extending toward an object;
a light projecting section that irradiates the object with light obliquely from above;
a three-dimensional shape data generating unit for processing a measurement image with a predetermined algorithm to generate
three-dimensional shape data, the measurement image acquired in the light receiving section while the object is irradiated
using the light projecting section;

a 3D image generating unit for mapping a two-dimensional texture image of the object onto the three-dimensional shape data
to generate a three-dimensional texture image, the two-dimensional texture image acquired in the light receiving section;

a display section for displaying the three-dimensional texture image generated by the 3D image generating unit; and
a control unit for executing the processes of
accepting a manipulation of a user to allow illumination by the light projecting section and acquire the measurement image
in the light receiving section in synchronization with the illumination of the light projecting section,

subsequently processing the measurement image with the predetermined algorithm to generate three-dimensional shape data,
acquiring the two-dimensional texture image of the object in the light receiving section, and
mapping the two-dimensional texture image onto the three-dimensional shape data to generate the three-dimensional texture
image, wherein

the user can select an application measurement mode capable of manually adjusting a variety of parameters related to capturing
of the image of the object in the light receiving section, or a simple measurement mode capable of manually adjusting a smaller
number of parameters than in the application measurement mode in terms of adjusting a variety of parameters related to capturing
of the image of the object in the light receiving section.

US Pat. No. 9,122,048

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING PROGRAM

Keyence Corporation, Osa...

1. An image processing apparatus for a magnification observation apparatus including an object lens, and an imaging device
optically coupled to the object lens, and configured to acquire an image representing an object to be measured as an object
image, comprising:
a display configured to display the object image, and to display, on the object image, a measuring portion designating image
corresponding to a specific portion the object image;

a storage configured to store a preset positional relation between the measuring portion designating image and a plurality
of detecting regions at which a predetermined characteristic portion including an edge part is detected from the object image,
and to store a measuring condition; and

a processor configured to perform a manual movement of a position of the measuring portion designating image relatively to
the object image in response to a manual input, to detect the edge part as the predetermined characteristic portion at each
of the plurality of detecting regions from the object image based on the position of the measuring portion designating image
relatively to the specific portion of the object image, and to calculate a geometrical physical quantity based on the measuring
condition and the edge part detected as the predetermined characteristic portion and wherein the process part is operated
so that, when a distance between the measuring portion designating image and the specific portion of the object image falls
within a predetermined range by operation of the operation part, the measuring portion designating image is moved so as to
make a position of the measuring portion designating image agree with a position of the specific portion of the object image.

US Pat. No. 9,291,450

MEASUREMENT MICROSCOPE DEVICE, IMAGE GENERATING METHOD, MEASUREMENT MICROSCOPE DEVICE OPERATION PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM

Keyence Corporation, Osa...

1. A measurement microscope device comprising:
a first measurement light projecting unit configured to irradiate an object with first measurement light from a first direction,
the unit being a measurement light projecting unit for projecting measurement light as predetermined pattern structured illumination
to the object from an oblique direction;

an observation illumination light source for generating illumination light when capturing an observation image;
an imaging unit for acquiring measurement light projected by the first measurement light projecting unit and reflected by
the object to capture a plurality of striped images, and using the observation illumination light source to capture an observation
image having texture information;

a height image acquiring unit for acquiring a height image having height information based on the plurality of striped images;
a stage on which the object is placed;
a display unit for displaying the height image or the observation image;
a measurement unit for performing measurement on the height image displayed on the display unit;
an image connecting unit configured to, by moving the stage and capturing a different region including a connection margin
by the imaging unit, acquire a plurality of height images for connection and observation images for connection, and connect
the obtained plurality of height images for connection and observation images for connection to generate a connected image;

a measurement error region display unit configured to superimpose and display a measurement error region, where a result of
measurement of the height is error, on an image of the object corresponding to each region to be connected by the image connecting
unit; and

a measurement-image imaging condition setting unit for adjusting an imaging condition for a striped image required for generation
of the height image to reduce the measurement error region in a state where the measurement error region is displayed.

US Pat. No. 9,354,352

PHOTOELECTRIC SENSOR

Keyence Corporation, Osa...

1. A photoelectric sensor comprising:
a light emitting element which repeatedly generates detection light;
a light receiving element which receives reflected light of the detection light and generates a light receiving signal indicating
a light receiving amount;

a binarization processing section which binarizes the light receiving signal from the light receiving element;
a capturing control circuit which generates a capturing signal corresponding to light emitting timing of the light emitting
element;

a waveform capturing section which has a large number of storage elements, each of the storage elements storing the binarized
light receiving signal in accordance with the capturing signal;

a capturing signal distribution section which has a branch circuit for supplying the capturing signal to each of the storage
element;

a light receiving signal distribution section which has a branch circuit for supplying the binarized light receiving signal
to each of the storage elements;

a delay circuit which is provided in at least one of the capturing signal distribution section and the light receiving signal
distribution section, and relatively delays timing of supply of the capturing signal and the binarized light receiving signal
to each of the storage elements such that the binarized light receiving signal is stored into the waveform capturing section
as waveform data indicating a temporal change;

a waveform integration part which matches light emitting timing of the light receiving element to integrate two or more pieces
of the waveform data and generates integrated waveform data; and

a workpiece discrimination part which discriminates presence or absence of a workpiece based on the integrated waveform data.

US Pat. No. 9,304,034

MULTI-OPTICAL AXIS PHOTOELECTRIC SENSOR WITH A CASE BODY AND MOLDED END MEMBERS

Keyence Corporation, Osa...

1. A multi-optical axis photoelectric sensor comprising:
a plurality of optical axes arranged at a predetermined pitch;
a case body formed to have an open first end and an open second end, the case body having the same cross-sectional shape in
a longitudinal direction of the multi-optical axis photoelectric sensor;

end members attached to the first end and the second end of the case body and each formed of a molded article for closing
an opening on each of the first and second ends; and

an optical component for defining a spread angle of each of the optical axes, the optical component being arranged from the
first end to the second end of the case body so as to be separated from an inner face of the case body,

wherein the optical component and the end members are directly or indirectly physically engaged with each other to unrotatably
position the optical component by the end members, and a reference for positioning the optical axes is the end members,

wherein the optical component and the end members are relatively unrotatably recess-projection fitted with each other, and
the recess projection fitting is insertable and removable in the longitudinal direction of the multi-optical axis photoelectric
sensor.

US Pat. No. 9,200,955

MULTI-OPTICAL-AXIS PHOTOELECTRIC SENSOR HAVING AN INTER-OPTICAL-AXIS INDICATION UNIT

Keyence Corporation, Osa...

1. A multi-optical-axis photoelectric sensor, which is provided with a longitudinally extending detection surface of an elongated
case and arrayed with a plurality of optical axes at regular intervals in agreement with the longitudinally extending detection
surface, the sensor comprising:
an inter-optical-axis indication unit provided between two adjacent optical axes, including
(a) an error indicator capable of displaying an error state,
(b) a safe output indicator configured to display a safe output state of the multi-optical-axis photoelectric sensor, and
(c) an interlock indicator configured to display the interlock state; and
a display controlling unit configured to cause the error indicator to display the error state.

US Pat. No. 9,175,949

CONTACT DISPLACEMENT METER

Keyence Corporation, Osa...

1. A contact displacement meter comprising:
a casing;
a contact supported by the casing movably in one direction;
a scale which has a plurality of light transmitting slits arrayed in the one direction and is configured movably in the one
direction along with the contact;

a light-projecting unit which irradiates the scale with non-parallel light;
a light-receiving unit which receives the non-parallel light having passed through the plurality of light transmitting slits
on the scale, and outputs a light reception signal indicating a light-receiving amount distribution;

a detecting unit which detects, as a plurality of peak positions, a plurality of positions where a light-receiving amount
is at maximum or minimum in the light-receiving amount distribution on the light-receiving unit; and

a calculating unit which calculates a distance between a reference position and a position of at least one light transmitting
slit corresponding to at least one peak position detected by the detecting unit out of the plurality of light transmitting
slits on the scale, based on the plurality of peak positions detected by the detecting unit and correction information showing
a relation of a distance between a plurality of peak positions in the light-receiving amount distribution on the light-receiving
unit and a distance between a plurality of light transmitting slits on the scale which respectively correspond to the plurality
of peak positions,

wherein the light-projecting unit and the light-receiving unit are provided in the casing such that the light-projecting unit,
the scale, and the light-receiving unit are arrayed in a direction crossing the one direction.

US Pat. No. 9,518,931

IMAGE INSPECTION APPARATUS, IMAGE INSPECTION METHOD, IMAGE INSPECTION PROGRAM, COMPUTER-READABLE RECORDING MEDIUM AND RECORDING DEVICE

Keyence Corporation, Osa...

15. An inspection method for capturing an image of a moving workpiece to perform visual inspection, the method comprising
the steps of:
simultaneously turning on three or more illumination sections at first reference timing, and capturing an image of the workpiece
by a common imaging section whose imaging direction and relative position with the illumination section are adjusted in advance,
to acquire a first reference image;

turning on the three or more illumination sections one by one in a predetermined turning-on order, illuminating, from mutually
different illumination directions at different turning-on timing, the workpiece moved from the time point of the first reference
timing, and capturing one partial illumination image with respect to each illumination direction by the imaging section, to
acquire a plurality of partial illumination images with different illumination directions;

simultaneously turning on the three or more illumination sections at second reference timing, and capturing, by the imaging
section, an image of the workpiece further moved from the time point of each of the turning-on timing, to acquire a second
reference image;

designating by a tracking target image specifying section a tracking target image which is included in the first reference
image and is used for tracking a position of the workpiece;

searching the tracking target image designated by the tracking target image designating section from the second reference
image, and specifying a position including the tracking target image in the second reference image, to estimate a corresponding
relation of pixels that correspond among each of the partial illumination images based on the specified position;

generating an inspection image for photometric stereo by an inspection image generating section based on the estimated corresponding
relation of each of the pixels of the partial illumination images; and

performing visual inspection of the workpiece by use of the inspection image.

US Pat. No. 9,217,666

PHOTOELECTRIC SENSOR WITH ADJUSTABLE SENSITIVITY

Keyence Corporation, Osa...

1. A photoelectric sensor comprising:
a light projecting device configured to project a pulse of light from a light projecting element driven by a driving circuit;
a light receiving element configured to receive the light projected from the light projecting device and to generate a light
receiving signal according to an amount of the light received;

a light receiving circuit configured to amplify the light receiving signal and to superimpose the light receiving signal on
a reference level;

an adjusting device having a variable resistor connected to a rotatable adjusting element and embedded in at least one of
the driving circuit and the light receiving circuit, and configured to change a resistance value of the variable resistor
according to a rotational position of the rotatable adjusting element so as to change the light receiving signal superimposed
on a reference level by changing a characteristic of the at least one of the driving circuit and the light receiving circuit;

an evaluator configured to generate a determination signal based on a comparison result between the light receiving signal
superimposed on the reference level and a threshold value;

a margin ratio calculator configured to calculate a ratio of an amount of the light receiving signal in the light receiving
signal superimposed on the reference level and a difference between the threshold value and the reference level as a margin
ratio; and

a display device configured to display the margin ratio.

US Pat. No. 9,144,992

CARTRIDGE TYPE INK JET RECORDING APPARATUS

Keyence Corporation, Osa...

1. An ink jet recording apparatus, the ink jet recording apparatus being a continuous type ink jet recording apparatus that
has a reservoir detachably receiving a solvent cartridge and adjusts the viscosity of an ink liquid by replenishment with
a solvent from the solvent cartridge, the ink jet recording apparatus comprising:
a main tank storing an ink liquid therein;
a solvent flowing tube connected to the reservoir, the solvent flowing tube allowing a solvent in the solvent cartridge attached
to the reservoir to flow therethrough;

a pump for sucking the solvent in the solvent cartridge attached to the reservoir to supply the sucked solvent to the main
tank through the solvent flowing tube; and

a replaceable optical emptiness detection unit disposed in the path of the solvent flowing tube,
the replaceable optical emptiness detection unit including
a light transmissive tube connected to the solvent flowing tube,
a light emitter arranged to face the light transmissive tube, the light emitter for emitting light toward the light transmissive
tube, and

a light receiver for receiving light reflected by the light transmissive tube or light passing through the light transmissive
tube and outputting a signal on the amount of the received light,

wherein, the light transmissive tube is connected to the solvent flowing tube when the replaceable optical emptiness detection
unit is disposed in the path of the solvent flowing tube, and

wherein emptiness detection for the solvent cartridge attached to the reservoir is performed based on the signal output from
the light receiver.

US Pat. No. 9,140,887

MICROSCOPE SYSTEM, FOCUS POSITION DETECTION METHOD, AND FOCUS POSITION DETECTION PROGRAM

Keyence Corporation, Osa...

1. A microscope system for observing a state of a surface of an observing target, the microscope system comprising:
a light source for emitting a light;
a light receiving element;
an optical system for irradiating the light emitted from the light source on the observing target while collecting the light,
and guiding the light irradiated on the observing target to the light receiving element;

a pixel data output unit for outputting pixel data corresponding to a plurality of pixels based on an output signal of the
light receiving element; and

a control unit for setting a sensitivity parameter for adjusting a value of the pixel data by controlling gain of the light
receiving element, and moving a focus of the optical system relative to the surface of the observing target to a plurality
of positions in an optical axis direction of the optical system; wherein

the control unit calculates an evaluation value using a value of the pixel data corresponding to a predetermined number of
pixels of the pixel data output from the pixel data output unit at each position of the focus of the optical system, assumes
the calculated evaluation value as the evaluation value corresponding to the position if the calculated evaluation value is
within a range between an upper limit value defined in advance and a lower limit value defined in advance, reduces the gain
of the light receiving element so that the calculated evaluation value is within the range if the calculated evaluation value
reaches the upper limit value, corrects the evaluation value calculated at each position of the focus of the optical system
based on a number of reductions of the gain of the light receiving element after reducing the gain of the light receiving
element according to the reduction of the gain of the light receiving element to have the corrected evaluation value as the
evaluation value corresponding to each position, and detects the position of the focus of the optical system indicating a
peak value in a distribution of a plurality of evaluation values corresponding to the plurality of positions of the focus
of the optical system and sets the gain of the light receiving element automatically, wherein

the control unit moves the focus of the optical system to the position of the focus indicating the peak value and
searches an upper limit position and a lower limit position by moving the focus of the optical system in one direction of
the Z direction while carrying out the gain adjustment of the light receiving element and

sets the upper limit position and lower limit position with the adjusted gain of the light receiving element.

US Pat. No. 9,410,898

APPEARANCE INSPECTION DEVICE, APPEARANCE INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An appearance inspection device comprising:
a basic image storage section which stores a basic image obtained by imaging an inspection object having a plurality of characteristic
portions arrayed in a specific direction;

a detection processing section which detects, from the basic image, each of positions of the plurality of characteristic portions
of the inspection object;

a measurement tool selection section which selects, from a plurality of measurement tools for performing different measurement,
a measurement tool to measure a measurement region of the inspection object;

a measurement region setting section which accepts position adjustment of the measurement region corresponding to at least
one of the plurality of characteristic portions, the measurement region being for performing a measurement with use of the
measurement tool selected by the measurement tool selection section, and sets the measurement region at a position shifted
by the amount of the accepted position adjustment from each of positions of the plurality of characteristic portions detected
by the detection processing section;

a display section which displays the measurement region set by the measurement region setting section along with the basic
image; and

a quality determination section which performs measurement according to the measurement region set by the measurement region
setting section, and determines whether the inspection object is good or defective based on a measurement result.

US Pat. No. 9,336,586

IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD USING COMPRESSED IMAGE DATA OR PARTIAL IMAGE DATA

Keyence Corporation, Osa...

1. An image processing apparatus comprising:
an imaging device including a camera module configured to acquire an image of an inspection object; and
a display device in communication with the imaging device, adapted to display an image acquired by the camera module, and
adapted to accept a user input, wherein the imaging device further includes:

a compression processing portion configured to compress an image acquired by the camera module to generate a compressed image;
a partial image generating portion configured to extract a part of an image acquired by the camera module to generate a partial
image;

an inspection condition data setting portion configured to set, based on the user input, a magnification of a reference image
to be displayed on the display device, configured to control the display device to display the reference image at the magnification,
and configured to set a parameter, an image processing tool and a trigger condition, wherein

the parameter which represents the magnification of the reference image corresponding to an image to be processed is set,
wherein the image processing tool which represents a type of image processing is set, based on the user input, on the reference
image displayed at the magnification on the display device, and wherein the trigger condition specifies a timing for the camera
module to acquire an inspection image of an inspection object;

a memory for storing the parameter, the image processing tool, and the trigger condition set by the inspection condition data
setting portion; and

an image processing portion configured to control at least one of the compression processing portion and the partial image
generating portion to process an image generated by the at least one of the compression processing portion and the partial
image generating portion, wherein

the image processing portion processes the compressed image generated from the inspection image acquired at the stored trigger
condition with the stored image processing tool when the stored parameter is set as a first magnification of the reference
image, and the image processing portion processes the partial image generated from the inspection image acquired at the stored
trigger condition with the stored image processing tool when the stored parameter is set as a second magnification of the
reference image higher than the first magnification.

US Pat. No. 9,494,528

INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An inspection apparatus comprising:
an imaging section configured to capture an image of an inspection target;
an illumination section which has a plurality of light sources arranged in a substantially annular form, a light diffusion
member for diffusing light emitted from the plurality of light sources, and a lighting control part for lighting the plurality
of light sources to illuminate the inspection target from three or more illumination directions in accordance with a predetermined
lighting pattern when designated to start lighting, and which moves independently of the imaging section to adjust a distance
to the inspection target;

a setting section configured to set a characteristic size which is a parameter showing a size of the surface shape of the
inspection target;

an inspection image generating section configured to
a) synthesize a plurality of luminance images, acquired by the imaging section, by a photometric stereo method,
b) obtain an inclination data which has an inclination component of the surface shape of the inspection target based on a
normal vector data of the surface of the inspection target computed from the synthesized plurality of luminance images, and

c) generate an inspection image having a plurality of pixel values in accordance with the inclination data of the surface
of the inspection target based on the characteristic size set by the setting section; and

a determination section configured to determine defectiveness/non-defectiveness of the inspection target by using the inspection
image.

US Pat. No. 9,785,813

PORTABLE OPTICAL READER

Keyence Corporation, Osa...

1. A portable optical reader comprising:
a reading part optically reading a symbol as a reading object;
a head part housing the reading part and having a reading port for the reading part;
a holding part continuously connected to the head part and extending in a connecting direction; and
a display part provided in the head part to display at least a reading result read by the reading part,
wherein the head part has outer side surfaces, and the display part is provided on at least two of outer side surfaces, the
outer side surfaces being a side surface facing to a surface on which the holding part is connected, and being a side surface
substantially orthogonal to both a reading direction by the reading part and an extending direction of the holding part.

US Pat. No. 9,430,690

OPTICAL INFORMATION READING DEVICE

Keyence Corporation, Osa...

1. A fixed optical information reading device comprising:
an instruction unit provided in the fixed optical information reading device;
an imaging section that captures an image of a code provided in a workpiece;
a decoding section that decodes image data acquired by the imaging section;
an arithmetic operation section that arithmetically operates a matching level indicating easiness of the decoding of the code,
stability of the decoding, a margin of the decoding, or pixel-per-cell in the decoding section;

an image display section that displays, as an image, at least one of the matching level, the image data acquired by the imaging
section, and an average success rate of the decoding obtained by decoding a plurality of image data obtained by capturing
the image of the code a plurality of times; and

a reading condition control section that controls a reading condition including an imaging condition of the imaging section,
and an image processing condition in the decoding section, wherein

the reading condition control section can perform tuning which is processing of searching for the reading condition suitable
for the reading of the code, by an instruction from the instruction unit, and

after the tuning ends, the image display section displays at least one of the matching level, the image data acquired by the
imaging section, and the average success rate of the decoding obtained by decoding the plurality of pieces of image data obtained
by capturing the image of the code the plurality of times.

US Pat. No. 9,329,024

DIMENSION MEASURING APPARATUS, DIMENSION MEASURING METHOD, AND PROGRAM FOR DIMENSION MEASURING APPARATUS

Keyence Corporation, Osa...

6. A dimension measuring method for measuring a dimension of a workpiece on a movable stage being movable in a Z direction
based on an edge of a workpiece image obtained by photographing the workpiece, the method comprising:
an imaging step for photographing a master workpiece on the movable stage, to generate a photographed image;
a depth extending step for generating a depth extended image which is a multifocal image obtained by synthesizing a plurality
of photographed images having different Z positions in focus, wherein each photographed image for use in depth extension is
associated with position information showing the Z-directional position of the movable stage, and each pixel of the depth
extended image is associated with the position information of the corresponding photographed image;

a master image displaying step for screen-displaying the depth extended image as a master image;
a measured position information generating step for designating a position to be measured and a measuring method with respect
to the master image, to generate measured position information, wherein the measured position information is associated with
Z-directional position information of the movable stage;

a measurement setting data storing step for storing the measured position information with the Z-direction position information,
the design value information showing a design value and a tolerance with respect to each position to be measured;

a focus-on-measured-position adjusting step for moving the movable stage automatically to a Z-directional position corresponding
to the position to be measured, for focus adjustment to the position to be measured;

a workpiece image capturing step that captures the workpiece image at the adjusted Z-directional position corresponding to
the position to be measured;

an edge extracting step for extracting an edge of the position to be measured from the workpiece image, subjected to focus
adjustment, based on the measured position information;

a dimension value calculating step for obtaining a dimension value of the position to be measured based on the extracted edge;
and

a quality determining step for obtaining an error from a difference made between the dimension value calculated by the dimension
value calculating step and the design value corresponding thereto, and compares the error with the corresponding tolerance,
to perform quality determination on the dimension value with respect to each position to be measured, and quality determination
on the workpiece.

US Pat. No. 9,341,465

DIMENSION MEASURING APPARATUS, DIMENSION MEASURING METHOD, AND PROGRAM FOR DIMENSION MEASURING APPARATUS

Keyence Corporation, Osa...

6. A non-transitory storage medium comprising instructions wherein when executed causes a computer to perform:
a measurement setting data storing procedure for storing feature amount information for detecting a workpiece from a photographed
image, the feature amount information being a pattern image based on a first master image photographed with a low magnification,
measured position information showing a position to be measured which is designated as an object to be measured, the measured
position information set based on a second master image with a high magnification, and design value information formed of
a design value set with respect to each position to be measured and a tolerance associated with the design value;

a low-magnification imaging procedure for photographing, with the low magnification, the workpiece within the low-magnification
field of view, to generate a low-magnification image;

a workpiece detecting procedure for specifying a position and a posture of the workpiece in the low-magnification image based
on the feature amount information;

a stage controlling procedure for controlling the movable stage in XY directions based on the specified location and posture
such that the position to be measured of the workpiece stays within the high-magnification field of view;

a high-magnification imaging procedure for photographing, with the high magnification, the position to be measured which has
moved into the high-magnification field of view, to generate a high-magnification image, wherein center of the high-magnification
field of view coincides with center of the low-magnification field of view;

an edge extracting procedure for extracting an edge of the position to be measured from the high-magnification image based
on the specified location and posture and the measured position information;

a dimension value calculating procedure for obtaining a dimension value of the position to be measured based on the extracted
edge; and

a quality determining procedure for comparing a difference made between the dimension value calculated by the dimension value
calculating section and the design value corresponding thereto, with the corresponding tolerance, for performing quality determination
on the dimension value with respect to each position to be measured,

wherein in the case of the presence of two or more workpieces that cannot stay within the high-magnification field of view,
the stage controlling section sequentially moves the movable stage with respect to these workpieces such that positions to
be measured stay within the high-magnification field of view.

US Pat. No. 9,151,600

SHAPE MEASURING DEVICE, SHAPE MEASURING METHOD, AND SHAPE MEASURING PROGRAM

Keyence Corporation, Osa...

1. A shape measuring device comprising:
a stage on which a measuring object is mounted;
a measurement light source that emits light configured to irradiate the measuring object mounted on the stage with first light
comprising posture adjustment light having a first pattern for checking a posture of the measuring object obliquely from above,
and irradiate the measuring object mounted on the stage with second light comprising measurement light having a second pattern
for measuring a shape of the measuring object obliquely from above, wherein the first pattern is different from the second
pattern, wherein the measurement light is at least one of a sinusoidal measurement light, a striped measurement light, and
a coded measurement light, and wherein the second light is irradiated on the object for a plurality of times;

a camera and a plurality of lenses arranged above the stage, and configured to receive light reflected by the measuring object
mounted on the stage and output a light receiving signal indicating a light receiving amount, and to image the measuring object
mounted on the stage;

a central processing unit (CPU) configured to generate stereoscopic shape data indicating a stereoscopic shape of the measuring
object by a triangular distance measuring method based on the light receiving signal output by the camera and plurality of
lenses;

a display section configured to display an image of the measuring object captured by the camera and plurality of lenses;
an estimating unit which estimates a measurement difficulty region based on the first light;
a control section for controlling the measurement light source to irradiate the measuring object with the first light and
controlling the display section to display the image of the measuring object captured by the camera and plurality of lenses
before the shape measurement, wherein the control section superimposes and displays the estimated measurement difficulty region
on the image of the measuring object, and controlling the measurement light source to irradiate the measuring object with
the second light and controlling the central processing unit (CPU) to generate the stereoscopic shape data at the time of
the shape measurement; and

a stage operation unit operable to drive a stage rotation mechanism to rotate the stage to adjust the posture of the measuring
object with the measuring object being irradiated with the first light by the measurement light source, wherein the estimating
unit sequentially estimates the measurement difficulty region following change in the posture of the measuring object adjusted
by the stage operation unit.

US Pat. No. 9,778,023

OPTICAL COORDINATE MEASURING DEVICE

Keyence Corporation, Osa...

1. An optical coordinate measuring device comprising:
a probe configured to designate a measurement position, and having a plurality of markers;
an imaging unit configured to capture an image of the plurality of markers;
a fixing member designed to fix the imaging unit in a predetermined constant attitude such that the imaging unit captures
an image of a predetermined imaging region, wherein the imaging unit is detachable with respect to the fixing member; and

a calculation unit configured to calculate a coordinate point of a measurement position designated by the probe in the predetermined
imaging region based on the plurality of markers in the image captured by the imaging unit fixed in the predetermined constant
attitude by the fixing member, and configured to determine geometric characteristics based on the coordinate point of the
measurement position designated by the probe and a geometric shape including at least one of a plane, a cylinder and a sphere.

US Pat. No. 9,744,692

THREE-DIMENSIONAL SHAPING DEVICE AND THREE-DIMENSIONAL SHAPING METHOD

Keyence Corporation, Osa...

1. A three-dimensional shaping device, which repeats an operation of ejecting, onto a shaping plate, a model material (MA)
that forms a final shaped object and a supporting material (SA) that supports an overhang portion of the model material (MA)
and is finally removed, as shaping materials while scanning in at least one direction, and curing the shaping materials, to
form slices having a predetermined thickness in a height direction, and laminates the slices in the height direction, thereby
performing shaping, the device comprising:
the shaping plate for placing a shaped object thereon;
shaping material ejecting device, in which a plurality of model material ejection nozzles for ejecting the model material
(MA) and a plurality of supporting material ejection nozzles for ejecting the supporting material (SA) are arranged in one
direction,

curing device for curing the model material (MA) and the supporting material (SA);
a roller section comprising a roller body for pressing the shaping material, which has been ejected onto the shaping plate,
in an uncured state;

a head section provided with the shaping material ejecting device, the roller section, and the curing device in this sequence,
wherein the roller section is arranged in front of the curing device with respect to a traveling direction of the head section,
wherein the roller body is rotatable in a reverse direction to the traveling direction of the head section;

horizontal driving device for causing the head section perform reciprocating scanning in a horizontal direction;
vertical driving device for moving relative positions in the height direction of the head section and the shaping plate;
control device which controls driving of the horizontal driving device and the vertical driving device and controls ejection
of the shaping material by the shaping material ejecting device and curing by the curing device, wherein

the control device is configured to perform control such that the head section is operable to perform reciprocating scanning
in one direction having a forward path and a backward path by the horizontal driving device, wherein the model material (MA)
and the supporting material (SA) are ejectable onto the shaping plate by the shaping material ejecting device in the forward
path of the one reciprocating scanning, and excessive ejected model material (MA) and/or the supporting material (SA) are
pressable by the roller section in a backward path or a forward path which is different from the forward path in which the
model material (MA) and the supporting material (SA) are ejected for pressing the surfaces thereof in an uncured state so
as to smooth the shaping material surface, and the model material (MA) and/or the supporting material (SA) are curable by
the curing device in at least one of forward and backward paths of the reciprocating scanning, to form the slices, and relative
positions of the shaping plate and the head section are movable in the height direction to repeat lamination of the slices,
thereby performing shaping, and

on a line having a boundary portion where the model material (MA) and the supporting material (SA) come into contact with
each other and on the line where the model material (MA) and the supporting material (SA) are located in a scanning direction
of the shaped object, the model material (MA) and the supporting material (SA) are not simultaneously ejected during the same
reciprocating scanning, but only one shaping material is ejected and cured, and wherein

the control device is further configured to control the shaping material ejecting device, the horizontal driving device, the
vertical driving device, and the curing device such that the supporting material (SA) is ejected in an amount larger than
the amount of the model material (MA) which is ejected, and the supporting material (SA) is shaped with a resolution lower
than a resolution for the model material (MA).

US Pat. No. 9,387,684

INK JET RECORDING APPARATUS, INK OR SOLVENT CARTRIDGE, AND BOTTLE INCLUDED IN CARTRIDGE

Keyence Corporation, Osa...

1. A cartridge for a continuous type ink jet recording apparatus, the cartridge being detachably received in a cartridge receiving
unit of the continuous type ink jet recording apparatus so as to replenish the continuous type ink jet recording apparatus
with an ink or solvent, the cartridge comprising:
a body portion having an internal space storing an ink or solvent therein, the body portion at least partially having flexibility;
a rigid portion having a fluid path inside thereof and projecting in an axial direction from the body portion, the fluid path
communicating with the internal space of the body portion, the rigid portion having a smaller diameter and higher rigidity
than the body portion; and

a recording medium unit having a recording medium capable of recording information about the cartridge,
wherein the recording medium unit is detachably engaged with the rigid portion at a locking position by a recess-boss engagement
so as to be locked in the axial direction and in a circumferential direction of the rigid portion by the recess-boss engagement,
and wherein the recording medium unit has a first surface having a first terminal of the recording medium, the first surface
being substantially parallel to an insertion direction of the cartridge, the first terminal being in contact with a second
terminal disposed on a second surface provided at the cartridge receiving unit when insertion of the cartridge into the cartridge
receiving unit is completed, the second surface being substantially parallel to the insertion direction of the cartridge.

US Pat. No. 9,778,203

INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An inspection apparatus comprising:
an illumination section which has a plurality of light segments to illuminate the inspection target from three or more illumination
directions;

a storage section to store a lighting data including lighting time of the plurality of light segments and interval information
indicating a lighting interval of the plurality of light segments;

a processor for controlling the illumination section to light the plurality of light segments with reference to the lighting
data stored in the storage section when designated to start lighting, and generating an trigger signal for designating a start
of imaging in conjunction with the start of the illumination:

an imaging section for capturing a plurality of luminance images of an inspection target in accordance with the trigger signal;
an inspection image generating section for obtaining a normal vector of a surface of the inspection target based on the three
or more luminance images acquired by the imaging section and generating an inspection image based on the normal vector by
a photometric stereo method; and

a determination section for determining defectiveness/non-defectiveness of the inspection target by using the inspection image.
US Pat. No. 9,556,346

MODELING MATERIAL FOR FORMING PHOTOFABRICATION MODEL IN INK-JET THREE DIMENSIONAL PRINTING, SUPPORTING MATERIAL FOR SUPPORTING THE SHAPE OF PHOTOFABRICATION MODEL ON PHOTOFABRICATION AND PRODUCTION METHOD OF PHOTOFABRICATION MODEL

Keyence Corporation, Osa...

1. A modeling material for forming a photofabrication model in ink-jet three dimensional printing method, comprising curable
resin ingredients (A) to (C) with a weighted average of SP value of 9.0 to 10.3 and a photopolymerization initiator (D), wherein
curable resin ingredient (A) is a monofunctional ethylenically unsaturated monomer (A), curable resin ingredient (B) is a
polyfunctional ethylenically unsaturated monomer containing no urethane group (B), curable resin ingredient (C) is a urethane
group-containing ethylenically unsaturated monomer (C) and, wherein the content of (A) is 50 to 90%, the content of (B) is
3 to 25%, the content of (C) is 5 to 35%, and the content of (D) is 0.1 to 10% on the basis of the weight of the modeling
material, and the water-swelling ratio of a phototcured product of the modeling material is not more than 1% by weight.
US Pat. No. 9,790,382

MODELING MATERIAL FOR FORMING PHOTOFABRICATION MODEL IN INK-JET THREE DIMENSIONAL PRINTING, SUPPORTING MATERIAL FOR SUPPORTING THE SHAPE OF PHOTOFABRICATION MODEL ON PHOTOFABRICATION AND PRODUCTION METHOD OF PHOTOFABRICATION MODEL

Keyence Corporation, Osa...

1. A three-dimensional modeling method for forming a three-dimensional fabrication product using an ink-jet three dimensional
printing apparatus having a printer head for modeling material for discharging a modeling material onto a modeling table,
a printer head for supporting material for discharging a supporting material onto the modeling table, and a light source for
curing the modeling material and the supporting material discharged onto the modeling table, the method comprising the steps
of:
discharging a modeling material from the printer head for modeling material and discharging a supporting material from the
printer head for supporting material for the formation of respective layers on the modeling table;

curing the modeling material and the supporting material discharged onto the modeling table by light from the light source
to form the layers; and

repeating the steps of the discharging and the curing to shape a three-dimensional fabrication product formed of the modeling
material and the supporting material, and

separating a photocured product of the supporting material from a photocured product of the modeling material to extract the
photocured product of the modeling material by immersing the three-dimensional fabrication product formed of the modeling
material and the supporting material in water, wherein

the modeling material discharged from the printer head for modeling material comprises curable resin ingredients (A) to (C)
with a weighted average of SP value of 9.0 to 10.3 and a photopolymerization initiator (D),

wherein curable resin ingredient (A) is a monofunctional ethylenically unsaturated monomer (A), curable resin ingredient (B)
is a polyfunctional ethylenically unsaturated monomer containing no urethane group (B), curable resin ingredient (C) is a
urethane group-containing ethylenically unsaturated monomer (C), and

the content of (A) is 50% to 90%, the content of (B) is 3% to 25% and the content of (C) is 5% to 35%, on the basis of the
weight of the modeling material, and water-swelling ratio of a photocured product of the modeling material is not more than
1% by weight;

the supporting material discharged from the printer head for supporting material comprises a water-soluble monofunctional
ethylenically unsaturated monomer (F), an alkylene oxide adduct (G) being a water-soluble compound which is compatible with
the water-soluble monofunctional ethylenically unsaturated monomer (F) and is incompatible with a photocured product of (F)
and/or water, and a photopolymerization initiator (D), and

the content of (F) is 3% to 45% and the content of (G) is 50% to 95%, on the basis of the weight of the supporting material.

US Pat. No. 9,551,566

COORDINATE MEASURING DEVICE

Keyence Corporation, Osa...

1. A coordinate measuring device comprising:
a probe having a contact part configured to contact with a measurement target in order to measure a physical quantity of the
measurement target contacted by the contact part;

a first imaging unit configured to capture an image of at least part of the measurement target;
a position and attitude acquiring unit configured to acquire a position and an attitude of the probe and a position and an
attitude of the first imaging unit;

a display unit configured to display, as a captured image, the image of at least part of the measurement target obtained by
the first imaging unit; and

a control unit configured to control the display unit to display, on the captured image, a first indicator showing a measurement
position to be contacted by the contact part on the measurement target, based on the position and the attitude of the probe
and the position and the attitude of the first imaging unit obtained by the position and attitude acquiring unit.

US Pat. No. 9,542,583

OPTICAL INFORMATION READING DEVICE

Keyence Corporation, Osa...

1. A fixed optical information reading device, comprising:
a first illumination section that irradiates the workpiece with illumination light through a polarization filter;
a second illumination section that irradiates the workpiece with illumination light without any polarization filter;
an imaging section provided with a polarization filter having a polarization direction different from a polarization direction
of the polarization filter of the first illumination section, the imaging section for receiving light through the polarization
filter having the polarization direction different from the polarization direction of the polarization filter of the first
illumination section to capture an image of a code provided in the workpiece, the light being irradiated by at least one of
the first illumination section and the second illumination section and being reflected at the workpiece;

a decoding section that decodes image data acquired by the imaging section;
a lighting control section that controls which of the first illumination section and the second illumination section is to
be lighted; and

a condition decision section that decides an illumination condition, based on which is a more favorable decoding result, a
decoding result of the decoding section acquired in a state where the first illumination section is lighted and the second
illumination section is not lighted, or a decoding result of the decoding section acquired in a state where the first illumination
section is not lighted, and the second illumination section is lighted.

US Pat. No. 9,117,137

VISUAL INSPECTION DEVICE, VISUAL INSPECTION METHOD, AND COMPUTER PROGRAM

Keyence Corporation, Osa...

7. A visual inspection method executable by a visual inspection device which makes a non-defective/defective determination
by use of a captured inspection image of an inspection object and a determination threshold set based on a group of images
of items as non-defective items, the method comprising the steps of:
capturing the inspection image with a camera;
storing the inspection image acquired by the camera;
making the non-defective/defective determination by comparing a result of image processing with the inspection image stored
in the storing unit with the determination threshold;

accepting inputs of a plurality of candidate images to constitute the group of images of items as non-defective items and
storing these candidate images;

setting a defect threshold for determining whether each candidate image has a defective portion based on a plurality of pixel
values to be extracted from corresponding regions among the plurality of stored candidate images;

detecting the defective portion with respect to each of the plurality of stored candidate images based on the set defect threshold
and calculating a defect amount corresponding to a pixel value or an area of each candidate image;

testing by statistical processing whether or not each of the defect amounts calculated is an outlier;
displaying and outputting outlier information for specifying from among the plurality of stored candidate images a non-candidate
image to be eliminated from the group of images as non-defective items, the non-candidate image having the defect amount tested
to be the outlier;

resetting the defect threshold based on the plurality of stored candidate images except the non-candidate image from the group
of images of items as non-defective items; and

setting the determination threshold as a standard to be compared with the defect amount calculated based on the reset defect
threshold.

US Pat. No. 9,693,415

PHOTOELECTRIC SWITCH

Keyence Corporation, Osa...

1. A photoelectric switch comprising:
a first light projector configured to project a first light corresponding to two or more specific wavelengths toward a first
detection area;

a second light projector configured to project a second light corresponding to the two or more specific wavelengths toward
a second detection area;

a light receiver configured to receive the first light reflected from the first detection area to generate a first light reception
signal, and configured to receive the second light reflected from the second detection area to generate a second light reception
signal;

a casing accommodating the first light projector, the second light projector, and the light receiver; and
a detection signal generator configured to generate a detection signal based on at least one of the specific wavelength components
of the first light reception signal and at least one of the specific wavelength components of the second light reception signal.

US Pat. No. 9,608,397

LASER PROCESSING DEVICE

Keyence Corporation, Osa...

1. A laser processing device for processing an object by irradiating the object with laser light, the device comprising:
an excitation light generating unit configured to emit excitation light;
an excitation light transmission medium having one end and the other end, and configured to transmit the excitation light
emitted from the excitation light generating unit from the one end to the other end;

a laser light output unit configured to emit laser light based on the excitation light transmitted through the excitation
light transmission medium; and

a laser light scanning unit configured to scan the laser light emitted from the laser light output unit over a surface of
the object, wherein

the excitation light generating unit includes:
a plurality of light sources each having a single light emitting spot for emitting excitation light; and
a light collection optical mechanism configured to collect the excitation light emitted from the light emitting spots of the
plurality of light sources onto the one end of the excitation light transmission medium, and

the laser light output unit includes:
an excitation light separator configured to separate the excitation light emitted from the other end of the excitation light
transmission medium into first excitation light and second excitation light;

an oscillator having a first laser medium excited by the first excitation light separated by the excitation light separator,
a reflecting member disposed so as to reflect induced emission light emitted from a first end of the first laser medium toward
the first end, and an output mirror disposed so as to reflect induced emission light emitted from a second end of the first
laser medium toward the second end and emitting a part of induced emission light amplified by the first laser medium as the
laser light, the oscillator configured to cause oscillation of the laser light by the reflecting member and the output mirror;
and

an amplifier having a second laser medium excited by the second excitation light separated by the excitation light separator,
the amplifier configured to amplify the laser light emitted from the output mirror of the oscillator by the second laser medium.

US Pat. No. 9,557,159

OPTICAL COORDINATE MEASURING DEVICE

Keyence Corporation, Osa...

1. An optical coordinate measuring device comprising:
a probe configured to designate a measurement position, and having a plurality of markers;
an imaging unit configured to capture an image including the plurality of markers to generate image data; and
a calculation unit configured to calculate a coordinate point of a measurement position designated by the probe based on the
plurality of markers in the image data generated by the imaging unit,

wherein the probe includes
a light source,
a plurality of light transmitting portions each having a light transmitting region corresponding to each of the markers, each
having a planar outer surface, and including glass that transmits light emitted by the light source,

a light shielding film formed on each of the planar outer surface of the plurality of light transmitting portions except for
each of the light transmitting regions so as to form an outer shape of the marker, and

a holding part configured to hold the plurality of light transmitting portions.

US Pat. No. 9,536,295

THREE-DIMENSIONAL IMAGE PROCESSING APPARATUS, THREE-DIMENSIONAL IMAGE PROCESSING METHOD, THREE-DIMENSIONAL IMAGE PROCESSING PROGRAM, COMPUTER-READABLE RECORDING MEDIUM, AND RECORDING DEVICE

Keyence Corporation, Osa...

1. A three-dimensional image processing apparatus comprising: a head section; and a controller section, and capable of acquiring
a distance image that includes height information of an inspection target and also performing image processing based on the
distance image, wherein
the head section includes:
a light projecting part configured to project incident light as structured illumination of a predetermined projection pattern
from an oblique direction with respect to an optical axis of a below-described image capturing part;

the image capturing part configured to acquire reflected light that is projected by the light projecting part and reflected
on an inspection target, to capture a plurality of pattern projected images and to obtain a brightness image by capturing
the inspection target with the light projecting part set to a full illumination pattern or synthesizing the plurality of pattern
projected images;

a distance image generating part capable of generating a distance image based on the plurality of pattern projected images
captured in the image capturing part;

a head-side storage part configured to hold the brightness image and the distance image generated in the distance image generating
part; and

a head-side communication part configured to transmit the brightness image and the distance image held in the storage part
to the controller section, and

the controller section includes:
a controller-side communication part configured to communicate with the head-side communication part;
a display controlling part configured to transmit a control signal to a display part for displaying the brightness image and
the distance image on the display part;

an image capturing condition setting part configured to set an image capturing condition based on the displayed brightness
image on the display part;

an inspection target region setting part configured to set the inspection target region on the displayed distance image, wherein
the displayed distance image is generated from the plurality of the pattern projected images captured under the image capturing
condition set by the image capturing condition setting part; and

an inspection executing part configured to execute predetermined inspection processing on the inspection target region of
the distance image received in the controller-side communication part.

US Pat. No. 9,638,910

IMAGE MEASUREMENT DEVICE

Keyence Corporation, Osa...

1. An image measurement device comprising:
a stage for placing a workpiece;
an illumination device that illuminates the workpiece on the stage;
a camera that photographs the workpiece on the stage to generate a workpiece image;
a measurement target place specifying unit that specifies a measurement target place on the workpiece image;
an illumination condition storage unit that holds two or more illumination conditions;
an imaging control unit that controls the camera and the illumination device to acquire two or more of the workpiece images
sequentially photographed while making the illumination condition different;

a workpiece image display unit that displays the acquired plurality of workpiece images;
a workpiece image selecting unit that selects any one of the displayed workpiece images;
an illumination condition deciding unit that decides the illumination condition based on the selected workpiece image;
a measurement setting storage unit that holds, as measurement setting information, two or more measurement target places specified
on the same workpiece image by the measurement target place specifying unit and an illumination condition decided by the illumination
condition deciding unit with respect to each of these measurement target places, wherein the illumination condition is held
in association with the measurement target place in the measurement setting storage unit; and

a dimension calculating unit that extracts an edge of the measurement target place based on the workpiece image photographed
on the decided illumination condition, and obtains a dimension of the measurement target place based on the extracted edge;

wherein the imaging control unit repeatedly acquires a workpiece image photographed on the illumination condition in association
with each of the measurement target places held as the measurement setting information, and

the dimension calculating unit performs edge extraction with respect to each of the measurement target places held as the
measurement setting information on the plurality of workpiece images acquired by the imaging control unit and obtains a dimension
between edges respectively extracted from two or more workpiece images with mutually different illumination conditions and
positions of the measurement target place.

US Pat. No. 9,671,264

ULTRASONIC FLOW SWITCH

Keyence Corporation, Osa...

1. An ultrasonic flow switch to output an ON/OFF signal based on a flow rate of a fluid in a pipe, the ultrasonic flow switch
comprising:
a first ultrasonic wave element configured to transmit an ultrasonic wave to a fluid in a pipe;
a second ultrasonic wave element configured to receive the ultrasonic wave from the fluid in the pipe;
a calculator configured to calculate a flow rate of the fluid in the pipe based on an output signal from the second ultrasonic
wave element;

an output part configured to output the ON/OFF signal based on the flow rate calculated by the calculator and a preset flow
rate threshold value;

an element holder integrally or independently holding the first ultrasonic wave element and the second ultrasonic wave element;
a mounting member detachably mounted on an outer surface of the pipe, configured to hold the element holder; and
an acoustic contact medium formed of a soft elastic body, and arranged between at least one of the first and second ultrasonic
wave elements and the pipe,

wherein the acoustic contact medium is pressed to the outer surface of the pipe such that the at least one ultrasonic wave
element is acoustically coupled to the pipe in a state where the mounting member is mounted on the outer surface of the pipe
and the element holder is held by the mounting member, and

the ultrasonic flow switch further comprises a collapsing amount restricting part which restricts a collapsing amount of the
acoustic contact medium at a portion where the collapsing amount of the acoustic contact medium caused by the pipe is the
largest.

US Pat. No. 9,671,263

ULTRASONIC FLOW SWITCH

Keyence Corporation, Osa...

1. An ultrasonic flow switch to output an ON/OFF signal based on a flow rate of a fluid in a pipe, the ultrasonic flow switch
comprising:
a first ultrasonic wave element configured to transmit an ultrasonic wave to a fluid in a pipe;
a second ultrasonic wave element configured to receive the ultrasonic wave from the fluid in the pipe;
a calculator configured to calculate a flow rate of the fluid in the pipe based on an output signal from the second ultrasonic
wave element;

an output part configured to output the ON/OFF signal based on the flow rate calculated by the calculator and a preset flow
rate threshold value;

an element holder integrally or independently holding the first ultrasonic wave element and the second ultrasonic wave element;
a mounting member detachably mounted on an outer surface of the pipe, configured to support the element holder; and
a fixing member fixing the element holder to the mounting member,
wherein, in a state where the element holder is not fixed by the fixing member, the mounting member is configured to restrict
displacement of the element holder in an axial direction of the pipe and in a circumferential direction of the pipe and to
allow displacement of the element holder in a radial direction of the pipe.

US Pat. No. 9,632,036

IMAGE INSPECTION APPARATUS, IMAGE INSPECTION METHOD, IMAGE INSPECTION PROGRAM, COMPUTER-READABLE RECORDING MEDIUM AND RECORDING DEVICE

Keyence Corporation, Osa...

1. An image inspection apparatus for performing visual inspection of a workpiece, the apparatus comprising:
three or more illumination sections for illuminating the workpiece from mutually different illumination directions;
an illumination controlling section for turning on the three or more illumination sections one by one in a turning-on order;
an imaging section for capturing an image of the workpiece from a certain direction at illumination timing for turning on
each of the illumination sections by the illumination controlling section, to capture a plurality of partial illumination
images with different illumination directions;

a normal vector calculating section for calculating a normal vector with respect to a surface of the workpiece at each of
pixels by a photometric stereo method by use of a pixel value of each of pixels having a corresponding relation among the
plurality of partial illumination images captured by the imaging section; and

a contour image generating section for performing differential processing in an X-direction and a Y-direction on the normal
vector at each of the pixels calculated by the normal vector calculating section, to generate a contour image that shows a
contour of inclination of the surface of the workpiece.

US Pat. No. 9,726,873

MICROSCOPE AND MAGNIFYING OBSERVATION METHOD USING THE SAME

Keyence Corporation, Osa...

1. A microscope comprising:
a placement stage having a placement surface for placing an object;
a head section, having an optical axis, including a camera configured to acquire an observation image of an object on the
placement surface, and a lens coupled to the camera;

a first motorized stage lift coupled to the placement stage, and configured to change a vertical position of the placement
stage along a first direction orthogonal to the placement surface;

a second motorized stage lift coupled to the head section, configured to change a position of the head section along the optical
axis of the head section and configured to change an angular position of the head section around a swinging axis orthogonal
to the optical axis of the head section so as to perform an inclined observation; and

a controller operably coupled to the head section, the first motorized stage lift, and the second motorized stage lift, configured
to:

for an eucentric positioning, control the second motorized stage lift to change the position of the head section along the
optical axis of the head section based on a pre-stored information in response to a user instruction such that a focal position
of the head section matches to a height position of the swinging axis where the optical axis of the head section and the first
direction orthogonal to the placement surface are in parallel, and control the first motorized stage lift to change the vertical
position of the placement stage along the first direction based on the observation image acquired by the camera such that
a surface of the object placed on the placement surface is matched to the focal position of the head section where the optical
axis of the head section and the first direction orthogonal to the placement surface are in parallel, and the focal position
of the head section matches to the height position of the swinging axis, and

for a depth synthesis, control the second motorized stage lift to change the position of the head section along the optical
axis of the head section to acquire the observation images at different positions of the head section by the camera, and synthesize
in-focus pixels of the observation images acquired by the camera to generate a synthesized image.

US Pat. No. 9,689,806

INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An inspection apparatus comprising:
an imaging section for capturing an image of an inspection target;
an illumination section which has a plurality of light segments arranged in a substantially annular form to illuminate the
inspection target from three or more illumination directions, a storage part to store a lighting data including order information
indicating order of lighting the light segments and interval information indicating a lighting interval of the plurality of
light segments, and a lighting control part for lighting the plurality of light segments in accordance with the order information
and the interval information stored in the storage part when designated to start lighting, and which moves independently of
the imaging section to adjust a distance to the inspection target;

an inspection image generating section for synthesizing a plurality of luminance images, acquired by the imaging section,
by a photometric stereo method to generate an inspection image having a plurality of pixel values in accordance with inclination
or a reflectance of a surface of the inspection target; and

a determination section for determining defectiveness/non-defectiveness of the inspection target by using the inspection image.

US Pat. No. 9,690,088

MAGNIFYING OBSERVATION APPARATUS, MAGNIFIED IMAGE OBSERVING METHOD AND COMPUTER-READABLE RECORDING MEDIUM

Keyence Corporation, Osa...

1. A magnifying observation apparatus comprising:
a placement stage having a placement surface for placing an observation object;
a light source configured to irradiate the observation object with illumination light;
an imaging unit including a camera and a lens, having an optical axis, and configured to sequentially acquire an observation
image of the observation object;

a z-axis stage lift configured to change a relative distance between the placement stage and the imaging unit along a first
direction orthogonal to the placement surface or in parallel with the optical axis;

an xy-axis movable coupling configured to change a relative lateral position of the placement stage and the imaging unit along
a second direction in parallel with the placement surface;

a display configured to display an image with respect to the observation image; and
a controller operably coupled to the imaging unit and the display, configured to:
synthesize the observation image sequentially acquired to generate an enhanced observation image,
in a first display mode, control the display to display the enhanced observation image,
in a second display mode, control the display to display, at a higher update rate than the first display mode, the observation
image sequentially acquired by the imaging unit or a simple processed observation image generated by processing the observation
images simpler than synthesizing the observation images to generate the enhanced observation image,

detect a change with respect to the observation image acquired by the imaging unit,
determine an end of the change with respect to the observation image acquired by the imaging unit,
switch from the first display mode to the second display mode in response to the change detected by the controller in the
first display mode, and

switch from the second display mode to the first display mode in response to the end of the change determined by the controller
in the second display mode.

US Pat. No. 9,772,480

IMAGE MEASUREMENT DEVICE

Keyence Corporation, Osa...

1. An image measurement device comprising:
a stage for placing a workpiece;
an illumination device that illuminates the workpiece on the stage;
a camera that photographs the workpiece on the stage to generate a workpiece image;
a measurement target place specifying unit that specifies a measurement target place on the workpiece image;
an illumination condition storage unit that holds two or more illumination conditions;
an imaging control unit that controls the camera and the illumination device to acquire two or more of the workpiece images
sequentially photographed while making the illumination condition different;

a workpiece image display unit that displays the acquired plurality of workpiece images;
a workpiece image selecting unit that selects any one of the displayed workpiece images;
a processor that decides the illumination condition based on the selected workpiece image; and
a dimension calculating unit that extracts an edge of the measurement target place based on the workpiece image photographed
on the decided illumination condition, and obtains a dimension of the measurement target place based on the extracted edge,
wherein

the dimension calculating unit extracts the edge of the measurement target place with respect to the acquired plurality of
workpiece images,

the workpiece image display unit displays the extracted edge on the corresponding workpiece image while listing and displaying
the acquired plurality of workpiece images, and

the workpiece image selecting unit selects a workpiece image specified by the user out of the listed and displayed workpiece
images.

US Pat. No. 9,696,195

ULTRASONIC FLOW SWITCH

Keyence Corporation, Osa...

1. An ultrasonic flow switch to output an on/off signal based on a flow rate of a fluid flow in a pipe, the ultrasonic flow
switch comprising:
a first ultrasonic element configured to transmit an ultrasonic wave to a fluid flow in a pipe;
a second ultrasonic element configured to receive the ultrasonic wave from the fluid flow in the pipe;
a fixture detachably fixing the first and second ultrasonic elements to an outer surface of the pipe integrally or separately;
a reception interface configured to receive input information regarding at least one of the pipe and the fluid;
a calculation part configured to calculate the flow rate of the fluid in the pipe, based on an output signal of at least one
of the first and second ultrasonic elements, and the input information received by the reception interface; and

an output part configured to output the on/off signal, based on the flow rate calculated by the calculation part, and a preset
flow rate threshold value,

wherein the reception interface receives only an outer diameter of the pipe, only a thickness of the pipe, or both the outer
diameter and the thickness of the pipe as the input information regarding the at least one of the pipe and the fluid in a
first setting mode.

US Pat. No. 9,773,304

INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An inspection apparatus comprising:
an illumination section for illuminating an inspection target in accordance with a photometric stereo method;
an imaging section for receiving reflective light from the illuminated inspection target to generate a luminance image in
accordance with the photometric stereo method;

a computing section for calculating a normal vector of a surface of the inspection target from a plurality of luminance images
acquired by the imaging section, generating an inclination image made up of pixel values based on the normal vector calculated
from the plurality of luminance images and a plurality of reduced images of the inclination image with respectively different
reduction ratios, and performing synthesis processing of synthesizing at least two reduced images, to generate an inspection
image showing a surface shape of the inspection target;

a determination section for determining defectiveness/non-defectiveness of the inspection target by using the inspection image;
and

wherein the computing section gives weight to a component of the reduced images at the time of performing the synthesis processing
and generates a different inspection image in accordance with a characteristic size which is a parameter showing a size of
a surface shape of the inspection target.

US Pat. No. 9,683,943

INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An inspection apparatus comprising:
an illumination section for illuminating an inspection target by a photometric stereo method;
an imaging section for capturing an image of the inspection target illuminated by the illumination section;
an inspection image generating section for obtaining a normal vector of a surface of the inspection target based on a plurality
of luminance images acquired by the imaging section, to generate an inspection image made up of a plurality of pixel values
in accordance with the normal vector;

a display section for switching and displaying at least one of the plurality of luminance images and the inspection image,
or simultaneously displaying at least one of the plurality of luminance images and the inspection image;

an adjustment section for adjusting at least one of a control parameter of the imaging section and a control parameter of
the illumination section; and

an updating section for updating an image being displayed on the display section to an image where the control parameter has
been reflected when the control parameter is adjusted, wherein, when the display section displays the inspection image, the
adjustment section adjusts a generation condition for the inspection image by the photometric stereo method, and the adjustment
section adjusts a characteristic size out of the generation conditions.

US Pat. No. 9,638,908

IMAGE MEASUREMENT DEVICE

Keyence Corporation, Osa...

1. An image measurement device comprising:
a stage for placing a workpiece;
a camera that photographs the workpiece on the stage and generates a workpiece image;
a diffused illumination device that has a light source surrounding the photographing axis of the camera, and irradiates the
workpiece on the stage with diffused light from above;

a side-emitting illumination device that has a light amount distribution sharply changing in a photographing axis direction
of the camera, and irradiates the workpiece on the stage with illumination light from a side;

a measurement target place specifying unit that specifies a measurement target place on the workpiece image;
a relative position adjusting unit that moves the side-emitting illumination device in the photographing axis direction, to
adjust a relative position of the side-emitting illumination device to the stage;

a relative position identifying unit that obtains a change in luminance in the measurement target place with respect to two
or more of the workpiece images photographed at the different relative position to identify a relative position;

a measurement place information storage unit that stores the measurement target place in association with the relative position
identified by the relative position identifying unit;

an imaging control unit that controls the relative position adjusting unit to move the side-emitting illumination device to
the relative position with respect to the measurement target place stored in the measurement place information storage unit
and drives the side-emitting illumination device, to acquire the workpiece image; and

a dimension measuring unit that extracts an edge of the measurement target place based on the acquired workpiece image, to
obtain a dimension of the measurement target place based on the extracted edge.

US Pat. No. 9,772,483

MICROSCOPIC IMAGING DEVICE, MICROSCOPIC IMAGING METHOD, AND MICROSCOPIC IMAGING PROGRAM

Keyence Corporation, Osa...

1. A microscopic imaging device comprising:
a first light projecting section that emits light;
a light modulation element that is configured to selectively generate first measurement light with a pattern and second measurement
light without a pattern from the light emitted by the first light projecting section;

a first light projection optical system that irradiates a measuring object with the first and second measurement light generated
by the light modulation element through a common light path;

a second light projecting section that emits third measurement light;
a second light projection optical system that irradiates the measuring object with the third measurement light emitted by
the second light projecting section;

a light receiving section that receives light from the measuring object and outputs a light receiving signal indicating a
light receiving amount;

an image data generating portion that generates image data based on the light receiving signal output from the light receiving
section;

a pattern generating portion that generates a pattern to be irradiated on the measuring object while sequentially moving a
spatial phase by a predetermined amount;

an instructing section that switches a first observation mode of observing the measuring object using the first measurement
light and a second observation mode of observing the measuring object using the second measurement light; and

a controller that controls the light modulation element based on the pattern generated by the pattern generating portion and
controls the image data generating portion to generate sectioning image data indicating an image of the measuring object based
on a plurality of pieces of image data generated at a plurality of phases of the pattern during the first observation mode,
and controls the image data generating portion to generate normal image data indicating an image of the measuring object during
the second observation mode, wherein

the instructing section is configured to further switch between the first or second observation mode and a third observation
mode of observing the measuring object using the third measurement light, and

the controller controls the image data generating portion to generate transmission image data indicating an image of the measuring
object during the third observation mode.

US Pat. No. 9,690,089

MAGNIFYING OBSERVATION APPARATUS, MAGNIFIED IMAGE OBSERVING METHOD AND COMPUTER-READABLE RECORDING MEDIUM

Keyence Corporation, Osa...

1. A magnifying observation apparatus comprising:
a placement stage having a placement surface for placing an object;
a camera configured to acquire an observation image of the object placed on the placement surface, the camera configured to
sequentially acquire the observation images in response to starting an asynchronous process as performing a first process;

a microscope lens optically coupled to the camera;
a z-axis stage lift configured to change a relative height between the microscope lens and the placement surface along a first
direction orthogonal to the placement surface or in parallel with the optical axis, the z-axis stage lift configured to automatically
change the relative height from a first relative height to a second relative height so as to sequentially acquire the observation
images at the different relative heights in response to starting the asynchronous process as performing a second process,
the first process and the second process being synchronously or asynchronously performed as a moving acquiring process;

an xy-axis movable coupler configured to change a relative position between the placement stage and the microscope lens along
a second direction in parallel with the placement surface;

a display configured to display an image with respect to the observation image;
a buffering memory configured to store the observation image, the buffering memory configured to sequentially receive the
observation images sequentially acquired at the different relative heights by the camera in the asynchronous process; and

a controller operably coupled to the camera, the display and the buffering memory, configured to:
sequentially synthesize the observation images read from the buffering memory in response to starting the asynchronous process
as performing an image synthesis process, the observation images being sequentially acquired at the different relative heights,
and

generate a synthetic image, as the image with respect to the observation image, by sequentially synthesizing the observation
images;

wherein the image synthesis process by the controller and the moving acquiring process by the camera and the z-axis stage
lift are asynchronously performed in parallel and simultaneously.

US Pat. No. 9,754,146

PORTABLE OPTICAL READER

Keyence Corporation, Osa...

1. A portable optical reader comprising:
a head part illuminating light to a symbol which is a reading object and having a reading port through which light reflected
on the symbol passes; and

a holding part connected to the head part and extending in a direction away from the head part,
wherein the head part includes:
an illumination substrate;
a plurality of light source annularly arranged on the illumination substrate, the plurality of light source located on a reading
port side of the illumination substrate;

a second light source emitting light for polarization to the symbol;
a light projection polarizing element polarizing the light emitted from the second light source;
a member arranged inside the plurality of light source and having a side surface and a bottom surface to form a frustum shape
or a dome shape, the side surface including a light emitting surface being formed on the reading port side of the illumination
substrate located apart from the bottom surface, the light emitting surface diffusing the light from the plurality of first
light source and illuminating diffusion light to the symbol,

the bottom surface a) having a light projection opening through which polarized light from the light projection polarizing
element passes and b) having a light reception opening through which reflected light from the symbol passes;

a light reception polarizing element polarizing the reflected light passing through the light reception opening; and
an imaging part generating an image of the symbol by receiving the reflected light by the light reception polarizing element.

US Pat. No. 9,691,009

PORTABLE OPTICAL READER, OPTICAL READING METHOD USING THE PORTABLE OPTICAL READER, AND COMPUTER PROGRAM

Keyence Corporation, Osa...

1. A portable optical reader comprising:
imaging unit configured to image a character string as a reading target;
character string recognition unit configured to recognize the character string based on an image captured by the imaging unit;
reading format storage unit configured to store a plurality of reading formats defining an attribute of a character string;
first search processing unit configured to search a first reading format matched with a character string recognized by the
character string recognition unit among a plurality of stored reading formats;

second search processing unit configured to search a second reading format in which a character string matched with the first
reading format matches as a partial character string among a plurality of stored reading formats; and

notification unit configured to notify a possibility of a reading error regarding the recognized character string based on
a search result of the second search processing unit.

US Pat. No. 9,756,314

THREE-DIMENSIONAL IMAGE PROCESSING APPARATUS, THREE-DIMENSIONAL IMAGE PROCESSING METHOD, THREE-DIMENSIONAL IMAGE PROCESSING PROGRAM, COMPUTER-READABLE RECORDING MEDIUM, AND RECORDING DEVICE

Keyence Corporation, Osa...

1. A three-dimensional image processing apparatus which is capable of acquiring a distance image that includes height information
of an inspection target and also performing image processing based on the distance image, the apparatus comprising:
a light projecting part for projecting incident light as structured illumination of a predetermined fringe-like projection
pattern from an oblique direction with respect to an optical axis of a below-described image capturing part;

the image capturing part for acquiring reflected light that is projected by the light projecting part and reflected on an
inspection target, to capture a plurality of pattern projected images;

a distance image generating part capable of generating a distance image based on the plurality of images captured in the image
capturing part;

a pattern generating part for generating a first projection pattern and a second projection pattern whose fringe direction
is different from that of the first projection pattern as a plurality of projection patterns obtained by changing a fringe
direction of the projection pattern; and

an incorrect-height determining part for making comparison in height information of a corresponding portion of the inspection
target between a first distance image, generated in the distance image generating part based on a first pattern projected
image obtained by projecting from the light-projecting part the first projection pattern generated in the pattern generating
part and capturing an image of the first projection pattern in the image capturing part, and a second distance image, generated
based on a second pattern projected image obtained by the second projection pattern projected from the common light projecting
part, to determine height information of a portion where a difference not smaller than a predetermined value occurs as incorrect.

US Pat. No. 9,841,808

PHOTOELECTRIC SENSOR

Keyence Corporation, Osa...

1. A photoelectric sensor optically sensing at least one of a light reception amount and a distance, and outputting either
an ON signal or an OFF signal based on a threshold value and a current value representing the at least one of the light amount
and the distance, said photoelectric sensor comprising:
a body having a first surface;
a dot-matrix display, disposed on the first surface,
having a first displaying region and a second displaying region smaller than the first displaying region in a first displaying
mode of a run mode,

having a third displaying region and a fourth displaying region including a pair of sub-regions each smaller than the second
displaying region in a second displaying mode of the run mode,

having a current value displaying region smaller than the first displaying region and a setting item displaying region in
a setting displaying mode of a setting mode, and

configured to display, in the first displaying mode of the run mode, the current value fitting the first displaying region
on the first displaying region and the threshold value fitting the second displaying region on the second displaying region,

to display, in the second displaying mode of the run mode, the current value fitting the third displaying region on the third
displaying region, both (a) a peak hold value associated with the at least one of the light amount and the distance and (b)
a first character indicating the peak hold value, fitting a first of the pair of sub-regions on the first of the pair of sub-regions,
and both (a) a bottom hold value associated with the at least one of the light amount and the distance and (b) a second character
indicating the bottom hold value, fitting a second of the pair of sub-regions different from the first of the pair of sub-regions
on the second of the pair of sub-regions, and

to display, in the setting displaying mode of the setting mode, the current value fitting the current value displaying region
on the current value displaying region and a setting item associated with the photoelectric sensor fitting the setting item
displaying region on the setting item displaying region; and

a plurality of switches including a part of or disposed around the dot-matrix display, configured to switch between the run
mode and the setting mode, configured to select one of a plurality of displaying modes of the run mode including the first
displaying mode and the second displaying mode, and configured to adjust the threshold value in the run mode and the setting
item in the setting mode.

US Pat. No. 9,796,863

MODELING MATERIAL FOR FORMING PHOTOFABRICATION MODEL IN INK-JET THREE DIMENSIONAL PRINTING, SUPPORTING MATERIAL FOR SUPPORTING THE SHAPE OF PHOTOFABRICATION MODEL ON PHOTOFABRICATION AND PRODUCTION METHOD OF PHOTOFABRICATION MODEL

Keyence Corporation, Osa...

1. A supporting material used in ink jet three dimensional printing method where discharging of a modeling material from a
printer head for modeling material and discharging of a supporting material from a printer head for supporting material are
repeated for the formation of layers on a modeling table to shape a three-dimensional fabrication product formed of a photocured
product of the modeling material and a photocured product of the supporting material, and the photocured product of the supporting
material is dissolved and separated from the photocured product of the modeling material to extract the photocured product
of the modeling material by immersing the three-dimensional fabrication product in water, wherein
the supporting material contains a water-soluble monofunctional ethylenically unsaturated monomer (F), an alkylene oxide adduct
(G), and a photopolymerization initiator (D),

wherein said alkylene oxide adduct (G) having a number average molecular weight of from 100 to 5,000 and being a water-soluble
compound, and said alkylene oxide adduct is compatible with the water-soluble monofunctional ethylenically unsaturated monomer
(F), and wherein the alkylene oxide adduct (G) within the photocured product of the supporting material being soluble in water
and not compatible with a photocured product of (F) and

the content of (F) is 3% to 45% and the content of (G) is 50% to 95%, on the basis of the weight of the supporting material.

US Pat. No. 9,946,910

OPTICAL INFORMATION READING DEVICE

Keyence Corporation, Osa...

1. A fixed code reading device for reading a code on a workpiece, comprising:a housing;
a window portion provided on a front surface side of the housing and having translucency;
a first light source provided in the housing and configured to output light;
a first polarization filter provided only in a first region of the window portion and light output from the first light source passing through the first region of the window portion;
a second light source provided in the housing and configured to output light to an outside of the housing through a second region of the window portion which is a different region from the first region of the window portion and in the absence of any polarization filter;
a second polarization filter provided in a third region of the window portion which is a different region from the first region and the second region of the window portion, and a polarization direction of the second polarization filter being different from a polarization direction of the first polarization filter by substantially 90 degrees;
an imaging control unit configured to select a polarization mode in which only the first light source for polarization is lighted or a non-polarization mode in which only the second light source for non-polarization is lighted;
an imaging section configured to receive light output from the first light source if the polarization mode is set, wherein the imaging section is configured to receive both the first and second output lights and light output from the second light source if the non-polarization mode is set, reflected at the workpiece and received through the second polarization filter, and configured to output an image data; and
a decoding section that decodes the image data acquired by the imaging section,
wherein a part of an end portion of the first polarization filter is adjacent to and abuts a part of an end portion of the second polarization filter, and a shape of the part of the first polarization filter is complementary to a shape of the part of the second polarization filter, and wherein the first and second polarization filters surround the second region of the window portion.

US Pat. No. 9,970,745

MEASUREMENT TARGET MEASURING PROGRAM, MEASUREMENT TARGET MEASURING METHOD, AND MAGNIFYING OBSERVATION DEVICE

Keyence Corporation, Osa...

1. A measurement target measuring method, comprising:acquiring three-dimensional CAD data representing a measurement target;
acquiring actual height image data that includes as height information a distance from a reference position to each part on the surface of the measurement target in one direction;
generating a plurality of pieces of CAD height data that each include distances from a reference position to respective parts on the surface of the measurement target in a plurality of directions on the basis of the CAD data;
selecting, from the plurality of pieces of CAD height data, CAD height data with the highest matching degree with respect to the actual height image data, as reference height data;
displaying as a target image a first image based on the actual height image data or a second image corresponding to the first image, and displaying as a reference image a third image based on the reference height data or a fourth image corresponding to the third image;
performing alignment of the target image and the reference image as first alignment by pattern matching;
specifying a measurement place for the measurement target; and
displaying information that shows a deviation between the measurement place represented by the actual height image data and the measurement place represented by the reference height data.

US Pat. No. 10,088,301

IMAGE MEASUREMENT DEVICE

Keyence Corporation, Osa...

1. An image measurement device comprising:a stage where a workpiece is to be placed;
a light projection section for radiating detection light on the workpiece on the stage;
an imaging section for receiving the detection light from the workpiece, and for generating a workpiece image;
a probe that is provided in a manner capable of being arranged in an imaging field of view of the imaging section;
a horizontal drive section for causing the probe to contact a side surface of the workpiece that is placed on the stage, by moving the stage and the probe relative to each other in a direction parallel to an upper surface of the stage;
a display section for displaying, at a time of measurement setting, a model image for setting that is generated based on design data of the workpiece or image data obtained by capturing an image of the workpiece by the imaging section;
an input receiving section for receiving designation of a measurement element for which measurement is to be performed by the probe, in the model image that is displayed by the display section;
a storage section storing, in advance, an arrangement rule defining a relationship between a shape type or a size of a measurement element that can be designated by the input receiving section and arranged positions of contact target positions of the probe; and
a measurement control section for identifying, at a time of measurement execution, contact target positions of the probe, based on a position of the measurement element designated by the input receiving section, a shape type or a size of the measurement element, and the arrangement rule that is stored in the storage section, and for controlling the horizontal drive section so that the probe sequentially moves to the plurality of contact target positions identified.

US Pat. No. 9,976,700

AREA MONITORING SENSOR

Keyence Corporation, Osa...

1. An area monitoring sensor which detects an intruding object in a monitoring area to generate a stop signal for stopping an operation of an external device, the area monitoring sensor comprising:a measurement unit that includes
a first casing,
a cover disposed on the first casing,
a light source, enclosed by the first casing and the cover, which generates a detection light,
a scanning rotator, enclosed by the first casing and the cover, which directs the detection light to the monitoring area through the cover to scan the monitoring area in a circumferential direction about a rotational axis,
a light receiver, enclosed by the first casing and the cover, which receives the detection light reflected by a target through the cover to generate a detection signal,
an angle sensor which detects a scanning angle of the detection light,
a distance calculator, enclosed by the first casing and the cover, which obtains a distance to the target based on the detection signal, and
a first input-output port disposed on the first casing;
a display unit, separated from the measurement unit, that includes
a second casing integrally attachable on a wall of the first casing detachably,
a screen, disposed on the second casing, which displays an operating state of the measurement unit,
a second input-output port, disposed on the second casing, detachably connected to the first input-output port, and configured to supply electric power, via the first input-output port and a cable, between the measurement unit and the display unit and to communicate, via the first input-output port and the cable, between the measurement unit and the display unit, and
an external communication port, disposed on the second casing, which is different from the first input-output port and the second input-output port, configured to detachably connect a communication cable and communicate, via the communication cable, an area setting information specifying the monitoring area from an external computer which is different from the measurement unit and the display unit, to set the monitoring area; and
an intrusion detecting section, disposed on the measurement unit or the display unit, which determines whether an intruding object is present in the monitoring area based on the distance to the target obtained by the distance calculator, the scanning angle of the detection light detected by the angle sensor and the area setting information specifying the monitoring area communicated from the external computer, to generate the stop signal in response to determining that the intruding object is present in the monitoring area.

US Pat. No. 9,959,451

IMAGE INSPECTION DEVICE, IMAGE INSPECTION METHOD AND IMAGE INSPECTION PROGRAM

Keyence Corporation, Osa...

1. An image inspection device comprising:a camera;
a stage on which a measurement target is to be placed;
a first image data acquisition part which acquires, by the camera, first image data representing a texture image of the surface of the measurement target placed on the stage;
a second image data acquisition part which acquires, by the camera, second image data representing a height image of the surface of the measurement target placed on the stage;
a controller which performs control operation in a setting mode to make setting for inspection and in an inspection mode to perform inspection; and
a display,
wherein the controller includes in the setting mode,
a first acquisition command part which gives a command to the first or second image data acquisition part to acquire first or second image data for positioning in a state where a setting target is placed on the stage,
a first registration part providing positioning image data showing a position and a posture of the setting target based on the command of the first acquisition command part,
a second acquisition command part providing a command to the first or second image data acquisition part to acquire first or second image data for alignment in the state where the setting target is placed on the stage,
a second registration part providing as reference image data the image data for alignment which is acquired by the command of the second acquisition command part,
a third acquisition command part providing a command to the second image data acquisition part to acquire second image data for measurement in the state where the setting target is placed on the stage,
a first measurement part which measures a size in a height direction of a measurement target portion of the setting target based on the second image data for measurement,
an acceptance part which accepts input of at least either value of a design value or a tolerance of the measurement target portion of the setting target, in the inspection mode,
a first display command part which gives a command to the display to display a positioning image based on the positioning image data,
a fourth acquisition command part which gives a command to the first or second image data acquisition part to acquire first or second image data for positioning in a state where an inspection target is placed on the stage,
a second display command part which gives a command to the display to display an image based on the image data for positioning which is acquired in the inspection mode,
a fifth acquisition command part which gives a command to the first or second image data acquisition part to acquire image data for alignment which corresponds to the reference image data after the command by the first and second display command parts,
a third registration part which registers, as alignment image data, the image data for alignment in the inspection mode,
a sixth acquisition command part which gives a command to the second image data acquisition part to acquire second image data for measurement in the state where the inspection target is placed on the stage,
an alignment part which aligns the second image data acquired by the command of the sixth acquisition command part by alignment of the alignment data and the reference image data with pattern matching,
a second measurement part which measures a size of a measurement target place of the inspection target which corresponds to a measurement target place of the setting target based on the second image data for measurement,
a determination part which determines Pass/Fail of the inspection target based on the size measured by the first measurement part, the size measured by the second measurement part, and at least either value of the design value or the tolerance accepted by the acceptance part, and
a third display command part which gives a command to the display to display the determination result determined by the determination part.

US Pat. No. 9,885,564

OPTICAL COORDINATE MEASURING DEVICE

Keyence Corporation, Osa...

1. An optical coordinate measuring device comprising:
a placement table for placing a measurement target;
a handheld probe having a plurality of markers and a contact part having a spherical surface offset from a center of the contact
part for contacting a measuring point of the measurement target on the placement table;

a memory which stores a marker positional relationship among the plurality of markers and a contact part positional relationship
including the center of the contact part with respect to the plurality of markers;

an imaging unit which captures an image including the plurality of markers in the handheld probe, to generate image data corresponding
to the image including the plurality of markers;

a base extended from the placement table in a first horizontal direction, and configured to hold the placement table;
a stand integrally coupled with an end of the base, extended in the vertical direction, and configured to hold the imaging
unit fixedly directed in obliquely downward such that an image of a region above the placement table is captured by the imaging
unit; and

a calculator which calculates a coordinate of a contact position on the spherical surface of the contact part in the handheld
probe based on the plurality of markers in the image data generated by the imaging unit, the marker positional relationship
and the contact part positional relationship.

US Pat. No. 9,866,747

OPTICAL DISPLACEMENT MEASUREMENT SYSTEM, IMAGING CONDITION OPTIMIZATION METHOD, AND IMAGING CONDITION OPTIMIZATION PROGRAM

Keyence Corporation, Osa...

1. An optical displacement measurement system of an optical cutting method for measuring a profile shape of a measurement
target by a triangulation method, the optical displacement measurement system comprising:
a light projection unit for radiating light on the measurement target along one direction;
a light receiving unit for receiving reflected light from the measurement target and for generating captured image data indicating
an image of the measurement target based on an amount of received light;

an imaging setting unit configured to set states of a plurality of imaging parameters for setting an imaging condition;
an imaging control unit for controlling the light projection unit and/or the light receiving unit to generate a plurality
of pieces of captured image data corresponding respectively to a plurality of imaging conditions by changing a state of any
of the plurality of imaging parameters set by the imaging setting unit;

a profile generation unit for generating profile data indicating a profile shape based on each piece of generated captured
image data; and

a reliability calculation unit for calculating, based on each piece of generated profile data or captured image data corresponding
to the profile data, a degree of reliability of a profile shape indicated by the profile data.

US Pat. No. 10,096,103

IMAGE PROCESSING SENSOR, IMAGE PROCESSING METHOD, IMAGE PROCESSING PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM AND DEVICE HAVING IMAGE PROCESSING PROGRAM RECORDED THEREIN

Keyence Corporation, Osa...

1. An image processing sensor for performing predetermined image processing on an image of an inspection target object to detect that the inspection target object is a non-defective product or a defective product, the image processing sensor comprising:an imaging unit configured to image the inspection target object;
a display unit configured to display a live image of the inspection target object acquired by the imaging unit;
an operation unit configured to receive an instruction for storing as a still image in a memory the live image displayed by the display unit so as to register the live image;
a threshold calculating unit configured to calculate a threshold with respect to a matching degree indicating a degree of feature matching of a first image that includes the inspection target object that represents the non-defective product and a second image that represents an image other than the non-defective product, the first image and the second image being registered according to the instruction received by the operation unit; and
a display control unit configured to cause the display unit to display the first image and the second image as the still image used for the calculation of the threshold by the threshold calculating unit, wherein
the display control unit causes the display unit to display, on a first registration screen for registering the live image corresponding to one image of the first image and the second image, the live image acquired by the imaging unit and, after receiving, with the operation unit, an instruction for registering the live image corresponding to the one image in a state in which the live image corresponding to the one image is displayed on the first registration screen, the display control unit causes the display unit to display, on a second registration screen for registering the live image corresponding to the other image of the first image and the second image, the live image acquired by the imaging unit and the already registered one image as the still image.

US Pat. No. 9,829,690

MICROSCOPIC IMAGING DEVICE, MICROSCOPIC IMAGING METHOD, AND MICROSCOPIC IMAGING PROGRAM

Keyence Corporation, Osa...

1. A fluorescence microscopic imaging device comprising:
a first light projecting section that emits light;
a light modulation element configured to generate measurement light having an arbitrary pattern from the light emitted by
the first light projecting section;

a filter unit configured to receive the measurement light from the light modulation element, wherein the filter unit includes
an excitation filter that allows measurement light having a first wavelength band to pass, a dichroic mirror that reflects
the measurement light having the first wavelength and allows light having a second wavelength band to pass, and an absorption
filter that allows light having a second wavelength band;

an optical system that irradiates a measuring object with the measurement light having the first wavelength band generated
by the filter unit;

a light receiving section that receives light having the second wavelength band from the measuring object and outputs a light
receiving signal indicating a light receiving amount;

an image data generating portion that generates image data based on the light receiving signal output from the light receiving
section;

an instructing section that instructs a measurement condition for generating a first pattern and a second pattern of the measurement
light including a rectangular wave pattern having an intensity distribution that changes in a rectangular wave form and having
a plurality of bright portions and dark portions lined at a substantially equal interval to be generated by the light modulation
element, wherein a spatial period of the first pattern or a width of the bright portions of the first pattern are different
from a spatial period of the second pattern or a width of the bright portions of the second pattern;

a pattern generating portion that generates the first pattern to be irradiated on the measuring object while sequentially
moving a spatial phase of the first pattern by a predetermined amount when the first pattern is instructed by the instructing
section and generates the second pattern to be irradiated on the measuring object while sequentially moving a spatial phase
of the second pattern by a predetermined amount when the second pattern is instructed by the instructing section, wherein
movement amount of the spatial phase of the first and second pattern is set such that the width of bright portions is smaller
than the width of dark portions and the bright portion of the measurement light is applied once on an entire irradiation range
of the measurement light;

a controller that controls the light modulation element based on the pattern generated by the pattern generating portion,
and controls the image data generating portion to generate sectioning image data indicating an image of the measuring object
based on a plurality of pieces of image data generated at a plurality of phases of the pattern; and

wherein the first pattern and the second pattern are generated by the single light modulation element and irradiated selectively
through a single light path; and

wherein the first pattern has a one-dimensional form having an intensity distribution that periodically changes in a first
direction, and the second pattern has a two-dimensional form having an intensity distribution that periodically changes in
the first direction and periodically changes in a second direction intersecting the first direction, and

the controller controls the light modulation element to sequentially move a phase of the first pattern in the first direction
when the first pattern is instructed by the instructing section, and controls the light modulation element to sequentially
move a phase of the second pattern in the first direction and the second direction when the second pattern is instructed by
the instructing section, and wherein number of imaging and the sectioning image data is higher for the second pattern compared
to the first pattern.

US Pat. No. 10,088,302

IMAGE MEASUREMENT DEVICE

Keyence Corporation, Osa...

1. An image measurement device comprising:a stage where a workpiece is to be placed;
a light projection section for radiating detection light on the workpiece on the stage;
an imaging section for receiving the detection light from the workpiece, and for generating a workpiece image;
a probe that is provided in a manner capable of being arranged in an imaging field of view of the imaging section;
a horizontal drive section for causing the probe to contact a side surface of the workpiece that is placed on the stage, by moving the stage and the probe relative to each other in a direction parallel to an upper surface of the stage;
a display section for displaying, at a time of measurement setting, a model image for setting that is generated based on design data of the workpiece or image data obtained by capturing an image of the workpiece by the imaging section;
a contact position designation section for receiving, in the model image that is displayed by the display section, designation of pieces of contact target position information indicating a plurality of contact target positions on the side surface of the workpiece where the probe should contact;
a characteristic amount information setting section for setting characteristic amount information that is set based on the model image and that is for identifying a position and an attitude of the workpiece from the workpiece image captured by the imaging section at a time of measurement execution;
a measurement setting information storage section for storing the pieces of contact target position information and the characteristic amount information; and
a measurement control section for identifying, at the time of measurement execution, the position and the attitude of the workpiece from the workpiece image captured and obtained by the imaging section, by using the characteristic amount information stored in the measurement setting information storage section, for identifying the plurality of contact target positions on the side surface of the workpiece where the probe should contact, based on the identified position and the identified attitude of the workpiece, and for controlling the horizontal drive section so that the probe sequentially moves to the plurality of contact target positions identified.

US Pat. No. 10,036,713

INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An inspection apparatus comprising:an illumination section which has a plurality of light segments to illuminate the inspection target from three or more illumination directions;
a storage section to store a lighting data including lighting pattern data which includes identification information of light segment to be lighted and information indicating a lighting starting position segment to be firstly lighted out of the light segments;
a processor for controlling the illumination section to light the plurality of light segments with reference to the lighting data stored in the storage section when designated to start lighting, and generating an trigger signal for designating a start of imaging in conjunction with the start of the illumination:
an imaging section for capturing a plurality of luminance images of an inspection target in accordance with the trigger signal;
an inspection image generating section for obtaining a normal vector of a surface of the inspection target based on the three or more luminance images acquired by the imaging section and generating an inspection image based on the normal vector by a photometric stereo method; and
a determination section for determining defectiveness/non-defectiveness of the inspection target by using the inspection image.

US Pat. No. 9,973,701

MONITORING SYSTEM

Keyence Corporation, Osa...

2. A monitoring system comprising:an intrusion detecting section configured to detect an intruding object in a monitoring area, to generate a stop signal for stopping an operation of an external device;
a camera configured to photograph the monitoring area;
a detail check image generating section configured to generate a detail check image for display based on a camera image photographed by the camera;
a privacy image generating section configured to generate a privacy image with lower picture quality than picture quality of the detail check image based on the camera image;
a display image selecting section configured to select either the detail check image or the privacy image as a display image;
an image displaying section configured to display the display image selected by the display image selecting section, and
a detection history storing section configured to store as a detection history the camera image photographed at the time of detection of the intruding object in the monitoring area, along with positional information indicating a position of the intruding object,
wherein
the privacy image generating section generates the privacy image based on the camera image stored as the detection history, and
the image displaying section displays the position of the intruding object on the privacy image based on the positional information stored as the detection history.

US Pat. No. 9,939,528

SAFETY SCANNER, OPTICAL SAFETY SYSTEM, AND SETTING SUPPORT DEVICE FOR SAFETY SCANNER

Keyence Corporation, Osa...

1. A safety scanner comprising:a light emitter configured to emit a detection light to a detection area;
a light receiver configured to receive the detection light reflected from an object within the detection area and configured to generate a light receiving signal in accordance with the detection light;
a distance calculation section configured to determine a distance to the object on the basis of the light receiving signal;
a scanner configured to direct the detection light to the detection area to scan the detection area in a circumferential direction around a rotation axis;
an intrusion sensing section configured to sense the object within a protection area on the basis of a distance measurement information including the distance determined by the distance calculation section and a scanning angle of the detection light directed by the scanner;
a monitoring image generater configured to generate a monitoring image for monitoring the protection area;
a sensing history storage configured to store, as a sensing history, a position of the object sensed within the protection area by the intrusion sensing section, a sensing time corresponding to the position of the object sensed by the intrusion sensing section, and at least one of the monitoring image corresponding to the sensing time and a plurality of the distance measurement information obtained within a scanning period corresponding to the sensing time, in association with each other; and
a sensing history transmitter configured to transmit the sensing history in accordance with a history request from an external device.

US Pat. No. 9,933,510

SAFETY SCANNER AND OPTICAL SAFETY SYSTEM

Keyence Corporation, Osa...

1. A safety scanner comprising:a light emitter configured to emit a detection light to a detection area;
a light receiver configured to receive the detection light reflected from an object within the detection area and configured to generate a light receiving signal in accordance with the detection light;
a distance calculation section configured to determine a distance to the object on the basis of the light receiving signal;
a scanner configured to direct the detection light to the detection area to scan the detection area in a circumferential direction around a rotation axis;
a distance measurement section configured to obtain a distance measurement information corresponding to the distance determined by the distance calculation section and a scanning angle of the detection light directed by the scanner;
an area designation information receiving section configured to receive an area designation information designating a protection area within the detection area from a setting support device;
an intrusion sensing section configured to determine the object within the protection area on the basis of the distance measurement information and the area designation information;
a marker identification section configured to identify a marker movably disposed within the detection area on the basis of a predetermined identification threshold; and
an area generation information transmission section configured to transmit the distance measurement information with respect to the marker obtained by the distance measurement section in response to identifying the marker by the marker identification section to the setting support device as an area generation information for determining the protection area.

US Pat. No. 9,933,511

SAFETY SCANNER

Keyence Corporation, Osa...

1. A safety scanner comprising:a light source configured to emit a detection light;
an optical rotator configured to rotate around a rotation axis extending in a first direction to direct the detection light from the light source to a detection area and scan the detection area in a circumferential direction by the detection light;
a light receiving element configured to receive the detection light reflected from an object within the detection area directed by the optical rotator and configured to generate a light receiving signal;
an intruder determination section configured to determine a measuring position of the object in the detection area based on (a) a distance to the object corresponding to the light receiving signal and (b) a scanning angle of the detection light directed by the rotator, and configure to compare the measuring position with a protection area set in the detection area to determine the presence or absence of an intruder in the protection area;
a casing including an upper member, a lower member facing the upper member and a rear member coupling a rear end of the upper member and a rear end of the lower member, the optical rotator disposed between the upper member and the lower member; and
a protective cover coupled to the casing for protecting the optical rotator, the casing and the protective cover forming an enclosure that houses the light source, the optical rotator, the light receiving element and the intruder determination section for protecting the optical rotator, and the protective cover including a window disposed across an optical path of the detection light and the reflected light between the optical rotator and the detection area;
wherein the window is formed in a circular arc shape, corresponding to the optical path of the detection light and the reflected light, having a central angle larger than 180° with respect to the rotation axis.

US Pat. No. 10,137,574

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM

Keyence Corporation, Osa...

1. An image processing apparatus comprising:a communication device capable of performing data communication with a robot controller that controls a motion of an end effector of the robot, wherein the robot controller is external from the image processing apparatus;
an imaging device that captures an image of a calibration target grasped by the end effector;
a command transmitting unit for transmitting to the robot controller a movement command in a common format to move the end effector to a plurality of predetermined positions so as to change a relative position of the calibration target, which becomes an imaging target, with respect to the imaging device, wherein the movement command in the common format is interpreted and converted to the movement command to the end effector in accordance with a type of the robot by a conversion program installed in the robot controller and wherein the movement command includes an order code and positions of movement destinations;
a movement coordinate acquiring unit for acquiring first coordinate values being each of position coordinates of the end effector having moved in accordance with the movement command to the end effector;
an imaging controlling unit for controlling an operation of the imaging device so as to capture an image of the calibration target at each movement destination, to which the end effector has moved;
an image detecting unit for detecting second coordinate values being position coordinates of the calibration target based on the image of the calibration target captured at each movement destination; and
a calibration executing unit for calculating a conversion rule between both of the coordinates based on the plurality of acquired first coordinate values and the plurality of detected second coordinate values;
wherein the conversion program is provided for each type of the robot, and when the movement command is received and the order code is detected in the movement command, the conversion program converts the positions of movement destinations to a movement command to the end effector in accordance with the type of the robot.

US Pat. No. 10,066,932

SHAPE MEASURING DEVICE

Keyence Corporation, Osa...

1. A shape measuring device that measures a surface shape of a measuring object, the shape measuring device comprising:a light source configured to emit light having a plurality of peak wavelengths;
a reference body;
a first light receiver including a two-dimensionally arrayed plurality of pixels;
an optical system configured to guide the light emitted by the light source to the measuring object as measurement light, guide the light emitted by the light source to the reference body as reference light, generate interference light of the measurement light reflected by the measuring object and the reference light reflected by the reference body, and guide the generated interference light to the first light receiver;
a movable base to which at least one of the optical system and the reference body is attached, the movable base reciprocatingly moving to thereby change a difference between an optical path length of the measurement light and an optical path length of the reference light;
a supporting base configured to support the movable base to be capable of reciprocatingly moving;
a position detector configured to detect relative positions of the movable base with respect to the supporting base;
a shape acquiring section configured to acquire surface shapes of a plurality of portions of the measuring object on the basis of the relative positions detected by the position detector and light receiving amounts of the plurality of pixels of the first light receiver;
a balancer supported to be capable of reciprocatingly moving with respect to the supporting base; and
a first driver configured to reciprocatingly move the movable base and the balancer with respect to the supporting base in opposite directions each other.

US Pat. No. 9,958,329

PHOTOELECTRIC SWITCH

Keyence Corporation, Osa...

1. A photoelectric switch comprising:a light projector configured to project a light toward a detection area;
a light receiver configured to receive the light from the detection area to generate a plurality of light reception signals respectively corresponding to a plurality of specific wavelengths; and
a controller configured to repeatedly acquire a receiving color based on the plurality of light reception signals respectively corresponding to the plurality of specific wavelengths,
configured to accept at least one of capture instructions to capture a plurality of reference colors,
configured to specify the receiving colors acquired in response to the at least one of capture instructions as the plurality of reference colors,
configured to compare the receiving color repeatedly acquired with each of the plurality of reference colors to calculate a coincidence degree between the receiving color repeatedly acquired and the plurality of reference colors, and
configured to compare the coincidence degree with a predetermined threshold to generate a detection signal representing a workpiece determination;
wherein, when the receiving color is newly acquired, the controller compares, with the predetermined threshold, the highest coincidence degree of coincidence degrees calculated by respectively comparing the receiving color newly acquired, with each of the plurality of reference colors, to generate the detection signal.

US Pat. No. 9,939,518

SAFETY SCANNER

Keyence Corporation, Osa...

1. A safety scanner comprising:a light emitter that emits a detection light to a detection area;
a light receiver that receives the detection light reflected from an object within the detection area and generates a light receiving signal in accordance with the detection light;
a distance calculation section configured to determine a distance to the object on the basis of the light receiving signal;
a scanner configured to direct the detection light to the detection area to scan the detection area in a circumferential direction around a rotation axis;
a distance measurement section that obtains a distance measurement information corresponding to the distance determined by the distance calculation section and a scanning angle of the detection light directed by the scanner;
an intrusion sensing section that determines the presence or absence of an object into a protection area on the basis of the distance measurement information obtained by the distance measurement section to output a sensing signal corresponding to the presence or absence of the object into the protection area;
an indicator lamp that indicates the sensing signal;
a scan image generation section that generates a scan image that includes a plurality of distance measurement information obtained by performing scanning with the detection light, the plurality of distance measurement information being represented as a plurality of distance measurement positions on a scanning plane of the detection light; and
a monitoring image display that displays the scan image on a screen, wherein the scan image includes a line image formed of a polygonal line that chronologically connects the plurality of distance measurement positions that are sequentially acquired.

US Pat. No. 9,933,306

PHOTOELECTRIC SWITCH HAVING A CONTROLLER FOR CONTROLLING A LIGHT PROJECTING AMOUNT AND GENERATING A DETECTION SIGNAL REPRESENTING A WORKPIECE DETERMINATION

Keyence Corporation, Osa...

1. A photoelectric switch comprising:a surface mount LED mounted on a first surface of a circuit board, configured to generate a light containing a plurality of color components with different hues;
a light projecting lens configured to concentrate the light generated by the surface mount LED, toward a detection area;
an optical shield disposed between the surface mount LED and the light projecting lens to shield the light around an optical opening passing the light from the surface mount LED to the light projecting lens;
a light receiving element configured to selectively receive the light from the detection area in association with a plurality of specific wavelengths, to generate a plurality of light reception signals respectively corresponding to light receiving amounts of the respective specific wavelengths;
a light receiving lens configured to concentrate the light from the detection area on a light receiving surface of the light receiving element;
a controller configured to control a light projecting amount of the surface mount LED based on the light reception signals,
configured to acquire a receiving color based on the plurality of light reception signals respectively corresponding to the specific wavelengths,
configured to compare the receiving color with a reference color to calculate a coincidence degree of both of the receiving color and the reference color, and
configured to compare the coincidence degree with a predetermined threshold to generate a detection signal representing a workpiece determination.

US Pat. No. 10,065,320

IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM

Keyence Corporation, Osa...

1. An image processing apparatus comprising:a communication device capable of performing data communication with a robot controller that controls a motion of a robot;
an imaging device that captures an image of a target being a target for an operation by the robot;
a movement coordinate acquiring unit for acquiring first coordinate values being each of position coordinates of movement destinations of an end effector of the robot;
an imaging controlling unit for controlling an operation of the imaging device so as to capture an image of a target at each of the movement destinations of the end effector;
an image detecting unit for detecting second coordinate values being position coordinates of the target based on the image of the target captured at each of the movement destinations;
a calibration executing unit for calculating a conversion rule between the first coordinate values acquired by the movement coordinate acquiring unit and the second coordinate values detected by the image detecting unit;
a robot selection accepting unit for accepting a selection of a type of the robot,
a storage unit for storing a position coordinate of the end effector obtained by the movement coordinate acquiring unit;
an operation setting accepting unit for accepting selections of a plurality of operations which the robot controller is made to execute out of a plurality of operations including an operation of transmitting an imaging trigger indicating timing for starting to capture the image of the target to the imaging device, an operation of detecting a position coordinate of the target based on the image captured by the imaging device and moving the end effector to the position coordinate converted by the conversion rule, an operation of moving the end effector to the position coordinate stored in the storage unit, and accepting a setting of an execution sequence of the plurality of operations the selections of which have been accepted; and
a program generating unit for generating an operation program corresponding to each of the plurality of operations in accordance with a format specified by type of the robot selected by the robot selection accepting unit, the selections of which have been accepted in the operation setting accepting unit, in accordance with the execution sequence the setting of which has been accepted.

US Pat. No. 10,184,789

IMAGE INSPECTION APPARATUS

Keyence Corporation, Osa...

1. An image inspection apparatus that inspects a defect of an inspection target object using an image obtained by imaging the inspection target object moving in one direction,the image inspection apparatus comprising:
a pattern light illuminating section including a two-dimensionally disposed plurality of light emitting diodes and a diffusing member that diffuses lights irradiated from the light emitting diodes, the pattern light illuminating section generating pattern light having a periodic illuminance distribution and irradiating the pattern light on the inspection target object;
an imaging section including a line camera that includes a plurality of image receiving elements arrayed in a line shape and is capable of being set such that an array direction of the light receiving elements is a direction orthogonal to the moving direction of the inspection target object;
a trigger signal transmitting section configured to transmit an illumination trigger signal to the pattern light illuminating section;
an imaging control section configured to control, on the basis of the illumination trigger signal transmitted from the trigger signal transmitting section, values of electric currents fed to the plurality of light emitting diodes to thereby cause the pattern light illuminating section to generate a plurality of pattern lights, phases of illuminance distributions of which are shifted in the array direction of the light receiving elements and the moving direction of the inspection target object, and sequentially irradiate the plurality of pattern lights on the inspection target object, and control the pattern light illuminating section and the imaging section to image the inspection target object at timings when the pattern lights are irradiated and obtain a plurality of line images; and
an image generating section configured to generate, on the basis of a deflectometry principle, phase data for one line of a surface of the inspection target object from the plurality of line images captured by the imaging section and generate, on the basis of the phase data, an image for inspection showing a shape of the inspection target object.

US Pat. No. 10,161,740

CONFOCAL DISPLACEMENT SENSOR

Keyence Corporation, Osa...

1. A confocal displacement sensor that measures displacement of a measurement object using a confocal optical system,the confocal displacement sensor comprising:
a light source for light projection configured to generate light having a plurality of wavelengths;
a first optical fiber, to a first incident end of which light emitted from the light source for light projection is input, the first optical fiber outputting the light from a first emission end;
a second optical fiber, a second incident end of which is disposed to be opposed to the first emission end, the second optical fiber emitting light input via the second incident end from a second emission end;
an optical member configured to cause an axial chromatic aberration on detection light emitted via an end face of the second emission end and converge the detection light toward the measurement object;
a spectroscope configured to spectrally disperse, in the detection light irradiated on the measurement object via the optical member, detection light passed through the end face of the second emission end by being reflected while focusing on the measurement object and generate a light reception signal representing light reception intensity for each wavelength;
a measurement control section configured to calculate displacement of the measurement object on the basis of the light reception signal;
a fiber connecting section configured to detachably connect the second incident end to the first emission end; and
a refractive index matching material disposed between the first emission end and the second incident end in contact with both end faces of the first emission end and the second incident end and configured to reduce a change in a refractive index between the first optical fiber and the second optical fiber, wherein
the second emission end has the end face inclined at a first inclination angle with respect to a plane perpendicular to a center axis of the second optical fiber, and
the second incident end and the first emission end respectively have the end faces inclined at a second inclination angle smaller than the first inclination angle.

US Pat. No. 10,190,873

SHAPE MEASURING DEVICE AND SHAPE MEASURING METHOD

Keyence Corporation, Osa...

1. A shape measuring device that measures a shape of a measuring object, the shape measuring device comprising:a light projecting section configured to irradiate the measuring object with light;
a light receiving section configured to receive the light projected by the light projecting section and reflected from the measuring object;
an exposure control section configured to change an exposure time of the light receiving section stepwise;
a height image data generating section configured to obtain a light receiving amount output from the light receiving section at each exposure time, which is changed stepwise by the exposure control section, and to generate height image data, in which each pixel value indicates a height of each portion of a surface of the measuring object, based on the obtained light receiving amount;
a pixel determination section configured to obtain a light receiving amount received by the light receiving section at each exposure time, which is changed stepwise by the exposure control section, and to determine whether each pixel constituting each height image, which is generated by the height image data generating section, is valid or invalid based on the obtained light receiving amount; and
an exposure time setting section configured to set, as a set value, an exposure time, which corresponds to a height image in which the number of pixels determined to be valid by the pixel determination section satisfies a predetermined condition.

US Pat. No. 10,169,857

IMAGE INSPECTION APPARATUS, IMAGE INSPECTION METHOD, IMAGE INSPECTION PROGRAM, AND COMPUTER-READABLE RECORDING MEDIUM AND RECORDING DEVICE

Keyence Corporation, Osa...

1. An image inspection apparatus for performing a visual inspection of an inspection object, the image inspection apparatus comprising:an image input unit for receiving input of an image of the inspection object;
an inspection type selection unit for receiving a selection of a desired inspection type from a plurality of inspection types previously prepared as candidates for the visual inspection of the inspection object;
a parameter setting unit for automatically setting a value of a first parameter according to the inspection type selected by the inspection type selection unit among a plurality of image processing parameters relating to image processing performed on the inspection object image;
an image generation unit for generating a plurality of processed images by changing a value of a second parameter different from the first parameter to a plurality of candidate values and performing image processing on the inspection object image with each of the changed second parameter candidate values;
a display unit for displaying a second parameter candidate list image group in which the plurality of processed images generated by the image generation unit are listed;
an image selection unit for receiving a selection of any one of the plurality of processed images included in the second parameter candidate list image group displayed on the display unit; and
a determination unit for outputting a determination result of the visual inspection,
wherein the parameter setting unit sets a second parameter candidate value corresponding to the processed image selected by the image selection unit as the second parameter, predetermined image processing is performed on the processed image generated by the image generation unit, and the determination unit outputs the determination result on the basis of a result of the processing.

US Pat. No. 10,194,095

IMAGE PROCESSING SENSOR SYSTEM, IMAGE PROCESSING SENSOR CONTROL METHOD, AND IMAGE PROCESSING SENSOR USED IN IMAGE PROCESSING SENSOR SYSTEM

Keyence Corporation, Osa...

1. An image processing sensor system comprising:a plurality of image processing sensors each including
an imaging device having an imaging unit imaging an inspection target and a lighting unit projecting light onto the inspection target,
an image processing device performing image processing on image data acquired in the imaging device and determining whether the inspection target is defective or non-defective, having a body which is separately provided from the imaging device, and connected to the imaging device with a connection cable for data communication, and
an I/O connector provided on the body of the image processing device, and wherein a result signal processed and determined by the image processing device on whether the inspection target is defective or non-defective is outputted through the I/O connector,
wherein the plurality of image processing sensors includes a first image processing sensor and a second image processing sensor which is adjacently provided to the first image processing sensor,
the image processing sensor system includes a pair of connector pins having male pin and female pin for connecting directly in mechanical and electrical contact with each other and communicating data, one of the connector pins is provided on a side surface of the body of a first image processing device of the first image processing sensor and the other one of the connector pins is provided on a side surface of the body of a second image processing device of the second image processing sensor, the side surface of the body of the second image processing device facing to the side surface of the body of the first image processing device and,
the image processing sensor system includes a communication interface provided on the body of one of the first image processing device or the second image processing device, the image data processed therein is transmitted to an external computer or display device via the communication interface,
the other one of the first image processing device or the second image processing device is configured to transmit an image data acquired in the imaging device thereof to the external computer or display device through the pair of connector pins and via the communication interface, and
the first image processing device and the second image processing device are connected directly in mechanical and electrical contact with each other through the pair of connector pins, and
wherein the first image processing sensor and the second image processing sensor are connected to each other so that data communication of data including the image data can be performed therebetween through the pair of connector pins, and
the first image processing device transmits a signal relating to the completion of projecting light to the second image processing device, and
the second image processing device transmits a signal to start projecting light and imaging after receiving through the pair of connector pins the signal relating the completion of projecting light,
wherein the plurality of image processing sensors has an Ethernet switch, respectively, and
the other one of the first image processing device and the second image processing device is configured to transmit the image data to the external computer or display device via the Ethernet switch of the image processing sensor and the communication interface.

US Pat. No. 10,190,896

ULTRASONIC FLOW SENSOR AND METHOD OF ATTACHING THE SAME

KEYENCE CORPORATION, Osa...

1. An ultrasonic flow sensor comprising:a first sensor unit including a first ultrasonic device which performs at least one of transmission of ultrasonic waves to a fluid flowing in piping or reception of ultrasonic waves from the fluid flowing in the piping;
a second sensor unit including a second ultrasonic device which performs at least the other one of transmission of ultrasonic waves to a fluid flowing in the piping or reception of ultrasonic waves from the fluid flowing in the piping;
a calculation part configured to calculate a flow rate of the fluid in the piping by obtaining a time difference between times required for ultrasonic waves to propagate from an upstream side to a downstream side and from the downstream side to the upstream side of the fluid flowing in the piping based on output signals from the first ultrasonic device and the second ultrasonic device;
a first fitting configured to accommodate the first sensor unit and fix the first sensor unit to the piping, the first fitting including a first position regulating portion configured to come into contact with an outer peripheral surface of the piping so as to align orientation of the first ultrasonic device with respect to the second ultrasonic device in an axial direction of the piping when viewing in a radial direction of the piping and a first housing portion configured to accommodate the first sensor unit from the opposite side of the piping with respect to the first position regulating portion; and
a second fitting configured to accommodate the second sensor unit and fix the second sensor unit to the piping, the second fitting including a second position regulating portion configured to come into contact with the outer peripheral surface of the piping so as to align orientation of the second ultrasonic device with respect to the first ultrasonic device in the axial direction of the piping when viewing in the radial direction of the piping, and a second housing portion configured to accommodate the second sensor unit from the opposite side of the piping with respect to the second position regulating portion,
wherein the first and second fittings further include: a pair of first and second arm portions extending from one of the first housing portion and the second housing portion to the other to regulate the relative position between the first housing portion and the second housing portion in a circumferential direction of the piping on both sides of a plane including the axial line of the piping, the first ultrasonic device, and the second ultrasonic device; and a guide portion formed at least on the arm portions and configured to guide relative positioning between the first fitting and the second fitting in the axial direction of the piping according to a diameter of the piping.

US Pat. No. 10,180,355

CONFOCAL MEASUREMENT DEVICE

Keyence Corporation, Osa...

1. A confocal measurement device comprising:a laser light source configured to emit a laser light;
a phosphor optically coupled to the laser light source, and configured to be excited by the laser light to emit a multi-wavelength light;
a light source optical condenser disposed on an optical path of the laser light, and configured to concentrate the laser light toward the phosphor;
an optical fiber unit having a splitter, at least one optical fiber comprising three optical fiber portions having a first end, a second end and a third end, the first end optically coupled to the phosphor, the second end optically connected to the first end through the splitter, and the third end optically connected to the second end through the splitter, wherein the optical fiber unit is configured to receive the multi-wavelength light emitted by the phosphor from the first end, to guide the multi-wavelength light from the first end to the second end, and to guide a measurement light from the second end toward the third end through the splitter;
a head optical condenser including a chromatic aberration lens, configured to concentrate the multi-wavelength light emitted from the second end of the optical fiber unit toward a measurement object, a focal length of the multi-wavelength light depending on the wavelength of each of the multi-wavelength light by passing through the chromatic aberration lens, and to concentrate, as the measurement light, a reflected light from the measurement object toward the second end of the optical fiber unit;
a light receiving element that selectively receives the measurement light passing through the third end of the optical fiber unit from the measurement object according to wavelength using a spectroscope and photoelectrically converts the measurement light to a signal corresponding to a light receiving amount; and
a measurement controller that measures thickness or displacement of the measurement object on the basis of the signal indicating the light receiving amount corresponding to the wavelength from the light receiving element.

US Pat. No. 10,174,880

AREA MONITORING SENSOR

Keyence Corporation, Osa...

1. An area monitoring safety sensor comprising:a measurement unit including:
a first casing;
a light source generating a detection light;
a scanning mirror configured to direct the detection light to a monitoring area to scan the monitoring area in a circumferential direction about a rotational axis;
a light receiver receiving the detection light reflected by a target to generate a detection signal;
an angle sensor detecting a scanning angle of the detection light; and
a distance calculator obtaining a distance to the target based on the detection signal;
a display unit electrically and communicatively connected to the measurement unit via a first detachable cable, including:
a second casing integrally attachable on the first casing detachably; and
an indicator configured to display an operating state of the measurement unit;
an external communication port, disposed on the second casing, configured to communicate an area setting information specifying the monitoring area from an external computer which is different from the measurement unit and the display unit, to set the monitoring area; and
an intrusion detector included in the measurement unit or the display unit, configured to determine whether an intruding object is present in the monitoring area on the basis of the distance to the target obtained by the distance calculator, the scanning angle of the detection light detected by the angle sensor and the area setting information specifying the monitoring area, to generate a safety binary signal representing ON state or OFF state.

US Pat. No. 10,107,998

OPTICAL-SCANNING-HEIGHT MEASURING DEVICE

Keyence Corporation, Osa...

1. An optical-scanning-height measuring device comprising:a position-information receiver configured to receive designation of a measurement point;
a light emitter configured to emit temporally low-coherent light;
a light splitter configured to divide the light emitted from the light emitter and output a part of the divided light as measurement light and output another part of the divided light as reference light;
a light deflector configured to deflect the measurement light output from the light splitter and irradiate the measurement light on a measurement object;
a driving controller configured to control the light deflector to irradiate light on a portion of the measurement object corresponding to the measurement point received by the position-information receiver;
a deflection detector configured to detect a deflecting direction of the light deflector or an irradiation position of the measurement light deflected by the light deflector;
a reference body configured to reflect the reference light output from the light splitter to return to the light splitter;
a movable stage configured to move the reference body along a first movement axis to change an optical path length of the reference light leading from the light splitter to the reference body;
a supporting member configured to movably support the movable stage on the first movement axis;
a position detector configured to detect a relative position of the movable stage with respect to the supporting member;
an interference-light generating section configured to generate interference light of the measurement light irradiated on the measurement object by the light deflector to return to the light splitter from the measurement object and the reference light reflected by the reference body to return to the light splitter;
a light receiver configured to receive the generated interference light and generate a light reception signal indicating a received light amount of the interference light;
a distance-information calculator configured to calculate a distance between the light splitter and the measurement object on the basis of the position of the movable stage detected by the position detector and the received light amount of the interference light in the light reception signal output by the light receiver;
a height calculator configured to calculate height of a portion of the measurement object corresponding to the designated measurement point on the basis of the deflecting direction of the light deflector and the irradiation position of the measurement light deflected by the light deflector detected by the deflection detector and the distance calculated by the distance-information calculator;
a balancing body movably supported on a second movement axis extending substantially in parallel to the first movement axis with respect to the supporting member; and
a reference driver configured to move the movable stage and the balancing body with respect to the supporting member in opposite directions each other during the movement of the movable stage.

US Pat. No. 10,268,853

OPTICAL INFORMATION READING DEVICE

Keyence Corporation, Osa...

1. An optical information reading device which includesan imaging part provided with an imaging element which takes an image of a code attached to a workpiece,
a conversion part generating a second image by converting from a pixel value of a first image obtained by the imaging part to a pixel value in response to a predetermined conversion characteristic, and
a decoding part decoding a code included in the second image generated by the conversion part,
the optical information reading device comprising:
a conversion characteristic storage part storing a plurality of different conversion characteristics used as the predetermined conversion characteristic at a time of conversion of the pixel value in the conversion part;
a processing part controlling the conversion part to generate a plurality of second images in response to each of the plurality of different conversion characteristics stored in the conversion characteristic storage part by using the first image obtained by the imaging part at a time of setting of the optical information reading device before operation of the optical information reading device, and to select one of the plurality of different conversion characteristics by analyzing a result in which the code included in each of the plurality of generated second images is decoded by the decoding part; and
a parameter setting storage part storing setting information including a parameter which constitutes the conversion characteristic selected by the processing part,
wherein the conversion part generates a new second image in response to the conversion characteristic corresponding to the parameter stored in the parameter setting storage part by using a new first image obtained by the imaging part at a time of the operation of the optical information reading device, and
the decoding part decodes a code included in the new second image generated by the conversion part.

US Pat. No. 10,241,056

INSPECTION APPARATUS, INSPECTION METHOD, AND PROGRAM

Keyence Corporation, Osa...

1. An inspection apparatus comprising:an illumination section which has a plurality of light segments to illuminate the inspection target from three or more illumination directions;
a processor for controlling the illumination section to light the plurality of light segments;
an imaging section for capturing a plurality of luminance images of an inspection target;
an inspection image generating section for obtaining a normal vector of a surface of the inspection target based on the three or more luminance images acquired by the imaging section and generating a shape image based on the normal vector by a photometric stereo method;
an image selection section for selecting an inspection image out of the plurality of luminance images captured by the imaging section and the shape image generated by the inspection image generating section; and
an inspection tool setting section for setting an inspection tool on the selected image by the image selection section.

US Pat. No. 10,215,631

CONFOCAL DISPLACEMENT SENSOR

Keyence Corporation, Osa...

1. A confocal displacement sensor that measures displacement of a measurement object using a confocal optical system, the confocal displacement sensor comprising:a light source for light projection configured to generate light having a plurality of wavelengths;
a pinhole configured to emit detection light by allowing the light emitted from the light source for light projection to pass;
an optical member configured to generate an axial chromatic aberration in the detection light emitted via the pinhole and converge the detection light toward the measurement object;
a measurement control section configured to calculate displacement of the measurement object on the basis of, in the detection light irradiated on the measurement object via the optical member, detection light passed through the pinhole by being reflected while focusing on the measurement object; and
a head housing configured to house the pinhole and the optical member, wherein
the optical member includes a first diffraction lens configured to diffract the detection light and a first refraction lens configured to refract the detection light, and
the first diffraction lens is disposed with a non-diffraction surface exposed from the head housing.

US Pat. No. 10,217,212

IMAGE PROCESSING SENSOR AND IMAGE PROCESSING METHOD

Keyence Corporation, Osa...

1. An image processing sensor for performing predetermined image processing on an image of an inspection target object to detect that the inspection target object is a non-defective product or a defective product, the image processing sensor comprising:an imaging unit configured to image the inspection target object;
a pass/fail determining unit configured to perform, on an input image of the inspection target object acquired by the imaging unit, pass/fail determination for distinguishing pass/fail of the inspection target object and output a determination result;
a response-time setting unit configured to set a response time as a time required from intrusion of the inspection target object into an imaging visual field of the imaging unit until the output of the determination result by the pass/fail determining unit;
a brightness-condition-candidate setting unit configured to set a respective plurality of brightness conditions as brightness condition candidates on the basis of the response time set by the response-time setting unit such that the determination result by the pass/fail determining unit is output within an allowable time corresponding to the response time;
an image-group acquiring unit configured to, on the basis of a respective plurality of brightness condition candidates set by the brightness-condition-candidate setting unit, acquire, using the imaging unit, a plurality of non-defective product candidate images of the inspection target object that should be distinguished as the non-defective product by the pass/fail determining unit and acquire, using the imaging unit, a plurality of background candidate images from which the inspection target object that should be distinguished as the non-defective product by the pass/fail determining unit is removed;
a differential-image generating unit configured to generate, on the basis of a non-defective product candidate image group and a background candidate image group acquired by the image-group acquiring unit, a non-defective product-background differential candidate image from a non-defective candidate image and a background candidate image acquired under the same brightness condition candidate among the plurality of brightness condition candidates;
a matching-degree calculating unit configured to respectively calculate matching degrees of the background candidate image with respect to pattern models corresponding to non-defective product-background differential candidate images generated for each of the plurality of brightness condition candidates by the differential-image generating unit; and
a brightness-condition selecting unit configured to select one brightness condition out of the plurality of brightness condition candidates according to a selection condition on the basis of the matching degrees calculated for each of the plurality of brightness condition candidates by the matching-degree calculating unit.

US Pat. No. 10,203,462

PHOTOELECTRIC SENSOR

KEYENCE CORPORATION, Osa...

1. A photoelectric sensor comprising:a light emitting element configured to project detection light toward a detection region;
a light receiving element configured to receive the detection light reflected from the detection region;
a connecting section for light projection to which a light propagation member for light projection optically coupled to the light emitting element is connected;
a connecting section for light reception to which a light propagation member for light reception optically coupled to the light receiving element is connected;
a signal generating unit configured to compare a light reception signal generated by the light receiving element and a threshold and generate a detection signal indicating a result of the comparison;
an optical light emitting element for indication which is optically coupled to at least one of the connecting section for light reception and the connecting section for light projection and configured to emit visible light and project an indication light in response to the light reception signal; and
a control unit configured to light the optical light emitting element for indication according to a light reception state of the light receiving element on the basis of the light reception signal and light the optical light emitting element for indication on the basis of an instruction from an outside.

US Pat. No. 10,203,234

ULTRASONIC FLOW SENSOR AND TEMPERATURE MEASURING METHOD USING THE SAME

KEYENCE CORPORATION, Osa...

1. An ultrasonic flow sensor comprising:a first ultrasonic device which performs at least one of transmission of ultrasonic waves to a fluid flowing in piping and reception of ultrasonic waves from the fluid flowing in the piping;
a second ultrasonic device which performs at least the other one of transmission of ultrasonic waves to a fluid flowing in piping and reception of ultrasonic waves from the fluid flowing in the piping; and
a calculation part configured to calculate a flow rate of the fluid in the piping based on output signals from the first ultrasonic device and the second ultrasonic device, and further comprising:
a sensor portion including at least one of the first ultrasonic device and the second ultrasonic device integrated therein, and includes a solid-state acoustic coupling member capable of elastic deformation and configured to come into contact with the piping; and
a fixing member configured to position and fix the sensor portion with respect to the piping,
wherein the sensor portion includes:
a heat transfer member having a heat detecting surface configured to come into contact with an outer peripheral surface of the piping when the sensor portion is fixed to the piping by the fixing member and detect heat of the piping;
a temperature detecting device configured to detect a temperature of heat transferred in the heat transfer member via the heat detecting surface; and
a temperature measuring part configured to measure the temperature of the heat detecting surface based on a detection signal from the temperature detecting device, and
wherein the heat transfer member restricts an amount of collapse of the acoustic coupling member in a radial direction of the piping when the sensor portion is fixed to the piping by the fixing member.

US Pat. No. 10,168,216

IMAGE INSPECTION DEVICE

Keyence Corporation, Osa...

1. An image inspection device comprising:an acquisition unit which acquires a color image of an inspection target object, the color image including a plurality of spectral images;
a display unit which displays the color image acquired by the acquisition unit;
a region designation unit which receives designation of a plurality of foreground regions including a plurality of pixels in the color image displayed on the display unit;
an extraction unit which extracts color information including a color distribution in each of the plurality of foreground regions designated by the region designation unit and color information including a color distribution in a background region distinguished from the plurality of foreground regions and registers the extracted color information as foreground colors for the plurality of foreground regions, respectively, and a background color for the background region;
a foreground image generation unit which calculates a distance on color space coordinates between a color of each pixel in the plurality of spectral images and each of the plurality of foreground colors, generates a plurality of distance images having the distance as a pixel value, and generates a foreground distance image based on the plurality of generated distance images;
a background image generation unit which calculates a distance on the color space coordinates between the color of each of the pixels in the plurality of spectral images and the background color, generates a distance image having the distance as a pixel value, and generates a background distance image based on the plurality of generated distance images; and
an inspection unit which inspects the inspection target object using a foreground-background image which is a difference image between the foreground distance image and the background distance image.

US Pat. No. 10,146,977

OPTICAL INFORMATION READING DEVICE

Keyence Corporation, Osa...

1. A fixed code reading device for reading a code on a workpiece, comprising:a housing;
a window portion provided on a front surface side of the housing and having translucency;
a first light source provided in the housing and configured to output light;
a first polarization filter provided in the first region of the window portion and light output from the first light source passing through the first region of the window portion;
a second light source provided in the housing and configured to output light to an outside of the housing through a second region of the window portion which is a different region from the first region of the window portion and in the absence of any polarization filter;
a second polarization filter provided in a third region of the window portion which is a different region from the first region and the second region of the window portion, and a polarization direction of the second polarization filter being different from a polarization direction of the first polarization filter;
a storage unit configured to store setting data including an illumination condition information which indicates which of a polarization mode in which light from the first light source is output through the first polarization filter and a non-polarization mode in which light is output from the second light source through the second region of the window is to be enabled;
an imaging control unit configured to select the polarization mode in which the first light source for polarization is lighted or a non-polarization mode in which the second light source for non-polarization is lighted in accordance with the illumination condition information stored in the storage unit;
an imaging section configured to receive light output from the first light source if the polarization mode is set and light output from the second light source if the non-polarization mode is set, reflected at the workpiece and through the second polarization filter, and configured to output image data of the code on the workpiece; and
a decoding section that decodes the image data acquired by the imaging section.

US Pat. No. 10,139,350

IMAGE INSPECTION APPARATUS, IMAGE INSPECTION METHOD, IMAGE INSPECTION PROGRAM, COMPUTER-READABLE RECORDING MEDIUM AND RECORDING DEVICE

Keyence Corporation, Osa...

1. An image inspection apparatus for performing visual inspection of a workpiece, the apparatus comprising:three or more illumination sections which are arranged in an annular shape for illuminating the workpiece from mutually different illumination directions;
an illumination controlling section for turning on the three or more illumination sections one by one in a turning-on order;
an imaging section for capturing an image of the workpiece from a certain direction at illumination timing for turning on each of the illumination sections by the illumination controlling section, to capture a plurality of partial illumination images with different illumination directions, wherein the imaging section is provided separately from the illumination section and moves independently of the illumination section to adjust a distance to the workpiece;
a normal vector calculating section for calculating a normal vector with respect to a surface of the workpiece at each of pixels by a photometric stereo method by use of a pixel value of each of pixels having a corresponding relation among the plurality of partial illumination images captured by the imaging section; and
an installation auxiliary section for indicating the rotational position of the illumination sections in a circumferential direction and supporting a user to install the illumination sections and the imaging section in accordance with a predetermined installing setting in order to correctly calculate the normal vector by the normal vector calculating section; and
a determination section for determining presence or absence of a flaw on the surface of the workpiece based on the normal vector.

US Pat. No. 10,279,473

IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND COMPUTER PROGRAM

Keyence Corporation, Osa...

1. An image processing device that controls a picking operation of a robot in which the robot holds a workpiece that is disposed on a flat surface or holds workpieces loaded in bulk using a holding unit and moves a held workpiece to a predetermined position, the image processing device comprising:a sensing unit that obtains three-dimensionally measured data a) by performing a three-dimensional measurement on a working space in which the workpieces are loaded in bulk or b) by performing the three-dimensional measurement on the working space in which the workpiece is disposed on a flat surface;
a workpiece model creating unit that creates a workpiece model indicating a shape of the workpiece, except for a background region portion of the workpiece, based on the three-dimensionally measured data obtained by the three-dimensional measurement;
a coordinate system setting unit that sets a model coordinate system of the created workpiece model;
a holding data setting unit that sets holding data, as relative position data in the set model coordinate system, including a holding position of the workpiece model and a posture of the holding unit of the robot when holding the holding position;
a holding data storage unit that repeats setting of the model coordinate system and setting of the holding data with respect to multiple workpiece models created based on the three-dimensionally measured data obtained by the three-dimensional measurement while sequentially changing the posture of the workpiece, and stores multiple pieces of holding data such that the multiple pieces of holding data correspond to the workpiece models, respectively;
a search process performing unit that performs a three-dimensional search process using the multiple created workpiece models with respect to the three-dimensionally measured data obtained by the three-dimensional measurement; and
a control unit that controls an operation of the holding unit of the robot so as to hold the workpiece model succeeded in the three-dimensional search process based on the holding data corresponding to the workpiece model succeeded in the three-dimensional search process by the search process performing unit.

US Pat. No. 10,267,620

OPTICAL THREE-DIMENSIONAL COORDINATE MEASURING DEVICE AND MEASUREMENT METHOD THEREOF

Keyence Corporation, Osa...

1. An optical three-dimensional coordinate measuring device comprising:a stage base;
a table displacably supported to the stage base for placing a measurement object;
a stage marker disposed on the table;
a probe configured to designate a measurement position of a measurement object on the table;
a probe marker disposed on the probe;
an imaging device fixed to the stage base, for generating a first captured image including the probe marker and a second captured image including the stage marker;
a controller operably coupled to the imaging device, configured to identify a position and an attitude of the probe with respect to the imaging device on the basis of the probe marker included in the first captured image generated by the imaging device, to identify a position and an attitude of the table with respect to the imaging device on the basis of the stage marker included in the second captured image generated by the imaging device, and to obtain a relative position coordinate of a measurement position designated by the probe with respect to the table on the basis of the position and the attitude of the probe and the position and the attitude of the table with respect to the imaging device;
a geometrical element determination unit that determines, on the basis of a plurality of relative positions obtained by the controller and a previously set geometrical element, a relative position of the geometrical element; and
a dimension measurement unit that measures a desired dimension on the basis of a plurality of relative positions of geometrical elements determined by the geometrical element determination unit.

US Pat. No. 10,267,621

CONFOCAL DISPLACEMENT SENSOR

Keyence Corporation, Osa...

1. A confocal displacement sensor that measures displacement of a measurement object using a confocal optical system,the confocal displacement sensor comprising:
a light source for light projection configured to generate light having a plurality of wavelengths;
a plurality of pinholes configured to respectively emit a plurality of detection lights by allowing light emitted from the light source for light projection to pass;
an optical member configured to cause an axial chromatic aberration in the plurality of detection lights respectively emitted via the plurality of pinholes and converge the plurality of detection lights toward the measurement object;
a spectroscope configured to respectively spectrally disperse, in the detection lights irradiated on the measurement object via the optical member, a plurality of detection lights respectively passed through the plurality of pinholes by being reflected while focusing on the measurement object and generate a plurality of light reception waveforms representing light reception intensities for each wavelength; and
a measurement control section configured to statistically process the plurality of light reception waveforms and generate a representative light reception waveform from the plurality of light reception waveforms.

US Pat. No. 10,267,622

CONFOCAL DISPLACEMENT SENSOR

Keyence Corporation, Osa...

1. A confocal displacement sensor comprising:a light projecting section configured to emit light having a plurality of wavelengths;
an optical member configured to cause a chromatic aberration along an optical axis direction in the light emitted by the light projecting section, converge the light having the chromatic aberration, and irradiate the light on a measurement object;
a pinhole member including a pinhole that is in a confocal optical system and allows, in the light irradiated on the measurement object by the optical member, light having a wavelength reflected while focusing on a surface of the measurement object to pass;
an acquiring section including
i) a spectral section configured to spectrally disperse the light passed through the pinhole, and
ii) a light receiving section configured to receive the light spectrally dispersed by the spectral section and acquire a light reception signal indicating intensity for each wavelength concerning the light;
a displacement measuring section configured to calculate displacement of the measurement object on the basis of signal intensity for each wavelength of the light passed through the pinhole; and
a display section configured to display, as change information, a change from a light reception signal acquired by the light receiving section at a point in time before a present point in time to a light reception signal acquired by the light receiving section at the present point in time, and
a processing section configured to be operable in a measurement mode for measuring displacement of the measurement object and a confirmation mode for causing the display section to display the change information, wherein the processing section calculates the displacement of the measurement object on the basis of intensity for each wavelength acquired by the acquiring section in the measurement mode.

US Pat. No. 10,260,859

CONFOCAL DISPLACEMENT SENSOR

Keyence Corporation, Osa...

1. A confocal displacement sensor that measures displacement of a measurement object using a confocal optical system,the confocal displacement sensor comprising:
a light projecting section configured to emit light having a plurality of wavelengths;
an optical member including a diffraction lens and configured to cause a chromatic aberration along an optical axis direction in the light emitted by the light projecting section, converge the light having the chromatic aberration, and irradiate the light on the measurement object, and a portion of the optical member exposed to outside being formed of a glass;
a pinhole member including a plurality of pinholes that are in the confocal optical system and allow, in the light irradiated on the measurement object by the optical member, light having a wavelength reflected while focusing on a surface of the measurement object to pass; and
a displacement measuring section including
a spectral section configured to spectrally disperse the light passed through the pinholes,
a light receiving section configured to receive the light spectrally dispersed by the spectral section and output an electric signal, and
a calculating section configured to calculate the displacement of the measurement object on the basis of signal intensity for each wavelength of an average signal corresponding to an average of intensities for the each wavelength concerning a plurality of lights passed through the plurality of pinholes, the signal intensity being based on the electric signal output from the light receiving section, wherein
the light emitted from the light projecting section is irradiated on the measurement object via the plurality of pinholes in the confocal optical system.

US Pat. No. 10,262,431

THREE-DIMENSIONAL MEASUREMENT DEVICE

Keyence Corporation, Osa...

1. A three-dimensional measurement device comprising:a shape measurement unit configured to measure respective three-dimensional positions of a plurality of measurement points in a three-dimensional space, and to generate a point cloud representing a three-dimensional shape of a measurement target object from the respective three-dimensional positions;
a display configured to display the three-dimensional shape of the measurement target object based on the point cloud;
a selector configured to receive a position on the three-dimensional shape displayed by the display, and to select, based on the position on the three-dimensional shape, a subset of the point cloud, a first subset of the point cloud selected, based on a first position received as the position by the selector, and a second subset of the point cloud selected, based on a second position received as the position by the selector, the second position being different from the first position;
an extractor configured to determine, as a first reference surface, a first geometric element of a basic shape fitting the first subset of the point cloud selected by the selector, and determine, as a second reference surface, a second geometric element of a basic shape fitting the second subset of the point cloud selected by the selector;
a calculator configured to determine first deviations of the first subset of the point cloud with respect to the first reference surface along a normal direction of the first reference surface, and second deviations of the second subset of the point cloud with respect to the second reference surface along a normal direction of the first reference surface; and,
a display controller configured to control the display to display, on the three-dimensional shape, both a distribution of the first deviations with respect to the first reference surface and a distribution of the second deviations with respect to the second reference surface.

US Pat. No. 10,262,177

OPTICAL INFORMATION READING DEVICE

Keyence Corporation, Osa...

1. An optical information reading device comprising:an imaging part including an imaging element which takes an image of a code attached to a workpiece which moves;
an input part inputting a moving speed of the workpiece;
a cell size setting part setting a size of a cell which constitutes the code on the image obtained by the imaging part;
an imaging condition setting part having a first function and a second function,
the first function calculates an upper limit of an exposure time of the imaging part as a restriction condition for reading the code attached to the workpiece based on the moving speed inputted by the input part and the size of a cell set by the cell size setting part, and
the second function sets the exposure time of the imaging part within the upper limit calculated as the restriction condition by the first function, by analyzing a plurality of images, each of which includes a code and is obtained by taking images multiple times by changing the exposure time or the gain of the imaging part; and
a decoding part decoding a code included in an image, which is newly obtained by the imaging part using the exposure time which is set by the second function of the imaging condition setting part.

US Pat. No. 10,168,022

ATTACHMENT FOR ILLUMINATION DEVICE

Keyence Corporation, Osa...

1. An attachment for an illumination device detachably attached to a ring-shaped illumination device, the ring-shaped illumination device including: a main case that includes a first opening section which is a substantially circular opening formed on an upper surface, a second opening section which is a substantially circular opening formed on a lower surface and which has a first center axis common to the first opening section, and a first hollow section which includes the first center axis and is connected to the first opening section and the second opening section; a plurality of light-emitting elements that is annularly arranged in the main case so as to surround the first hollow section; and a light emitting opening section that is an opening having a substantially annular shape whose center is located on the first center axis and having a width in a vertical direction of the main case, the light emitting opening section guiding light emitted from the plurality of light emitting elements downward of the first center axis from the first hollow section, the attachment for the illumination device comprising:a dome member that includes a small-diameter opening section which has an substantially annular shape and has an opening diameter smaller than a diameter of the first opening section of the ring-shaped illumination device, a large-diameter opening section which has a substantially annular shape, has a second center axis common to the small-diameter opening section, and has an opening diameter larger than the opening diameter of the small-diameter opening section, and a side-surface section which has a contour shape widening from the small-diameter opening section to the large-diameter opening section along the second center axis and has a second hollow section inside, and at least a part of which transmits light from outside while diffusing the light to the second hollow section, the small-diameter opening section being inserted into the first hollow section of the ring-shaped illumination device from the second opening section to the first opening section of the ring shaped illumination device in a state where the second center axis common to the small-diameter opening section and the large-diameter opening section substantially matches the first center axis of the ring-shaped illumination device when the attachment for the illumination device is fitted to the ring-shaped illumination device; and
a first shielding member that includes a first inner peripheral end section which is connected to the small-diameter opening section of the dome member after the dome member is fitted to the ring-shaped illumination device, extends over an entire periphery from the first inner peripheral end section in a direction perpendicular to the center axis of the small-diameter opening section, covers a space formed between an annular end section of the small-diameter opening section of the dome member and an annular end section of the first opening section of the ring-shaped illumination device, and is connected to the ring-shaped illumination device,
wherein the annular end section of the large-diameter opening section of the dome member engages with the ring-shaped illumination device so as to cover a space formed between the annular end section of the large-diameter opening section of the dome member and the annular end section of the second opening section of the ring-shaped illumination device when the dome member is fitted to the ring-shaped illumination device.