ClassID:

165897

G01J2001/444 - CPC Classification

Classification description:

Photometry, e.g. photographic exposure meter using electric radiation detectors; Electric circuits Compensating; Calibrating, e.g. dark current, temperature drift, noise reduction or baseline correction; Adjusting

Recent Application in this class:
#1
20260133068
2026-05-14

SYSTEM AND A METHOD FOR DARK CURRENT ELIMINATION

#2
20260067442
2026-03-05

SYNCHRONIZATION OF OPTICAL SENSORS FOR REDUCING POWER COMSUMPTION

#3
20260057864
2026-02-26

Device for Background Signal Cancellation in an Optical Pickup

#4
20260022965
2026-01-22

LIGHT INTENSITY MEASURING DEVICE FOR ULTRAVIOLET DISINFECTION CHAMBER AND RELATED METHOD

#5
20250369799
2025-12-04

BACKGROUND-BASED CORRECTION OF PHOTODETECTOR DRIFT

#6
20250354863
2025-11-20

AVALANCHE DIODE ARRANGEMENT, ELECTRONIC DEVICE AND METHOD FOR CONTROLLING AN AVALANCHE DIODE ARRANGEMENT

#7
20250354861
2025-11-20

METHOD AND SYSTEM FOR MEASURING SPATIAL LIGHT FIELD OF LUMINAIRE

#8
20250283756
2025-09-11

OPTICAL CONCENTRATION MEASURING DEVICE AND SIGNAL PROCESSOR

#9
20250271297
2025-08-28

APPARATUS AND METHOD FOR MASS DETECTING ELECTROLUMINESCENT DEVICES ARRAY

#10
20250251275
2025-08-07

REDUCED FLUCTUATIONS AND INCREASED BRIGHTNESS UNIFORMITY OF LASER SUSTAINED PLASMA SOURCES

#11
20250180402
2025-06-05

DETERMINING CONTRIBUTION OF DISPLAY SCREEN BRIGHTNESS TO AMBIENT LIGHT MEASUREMENTS IN A DISPLAY ENVIRONMENT

#12
20250164312
2025-05-22

METHOD FOR VOLTAGE STABILIZATION OF DIODES OF A PHOTODETECTOR

#13
20250164311
2025-05-22

DEVICE HAVING REDUCED OPTICAL CROSSTALK

#14
20250155280
2025-05-15

Emitter Module for an LED Illumination Device

#15
20250130105
2025-04-24

METHODS AND DEVICES FOR OBTAINING SILICON PHOTOMULTIPLIER DATA

#16
20250130102
2025-04-24

A WAVEGUIDE PHOTO DETECTOR INTEGRATED WITH A PLURALITY OF OPTICAL FEEDING WAVEGUIDE PORTS

#17
20250076111
2025-03-06

Systems and methods for crosstalk mitigation between ambient light sensor and electronic display

#18
20250052795
2025-02-13

PROPAGATION ENVIRONMENT ESTIMATION METHOD, PROPAGATION ENVIRONMENT ESTIMATION SYSTEM AND PROPAGATION ENVIRONMENT ESTIMATION DEVICE

#19
20250024015
2025-01-16

DETECTION DEVICE AND DETECTION METHOD USING AVALANCHE DIODE ARRAY

#20
20250015070
2025-01-09

PHOTOELECTRIC CONVERSION APPARATUS, PHOTO-DETECTION SYSTEM, AND MOVABLE BODY

#21
20240423517
2024-12-26

DIRECT LIGHT DIFFERENTIAL MEASUREMENT SYSTEM

#22
20240361180
2024-10-31

METHOD AND APPARATUS FOR INTERFERENCE REDUCTION IN OPTICAL SENSING RECEIVERS

#23
20240348768
2024-10-17

HARDWARE-BASED SENSOR ANALYSIS

#24
20240341019
2024-10-10

-SIllumination Device and Method for Calibrating an Illumination Device Over Changes in Temperature, Drive Current, and Time

#25
20240337527
2024-10-10

Emitter module for an LED illumination device

#26
20240328853
2024-10-03

ACTIVE CLAMP PHOTOELECTRIC SENSING DEVICE

#27
20240297722
2024-09-05

Gating Apparatus for Single-photon Detector and Quantum Communication Device

#28
20240272080
2024-08-15

ANALOG LIGHT MEASURING AND PHOTON COUNTING IN CHEMILUMINESCENCE MEASUREMENTS

#29
20240271998
2024-08-15

APD bias circuit with dual analog feedback loop control

#30
20240267633
2024-08-08

Light source module with integrated ambient light sensing capability

#31
20240257398
2024-08-01

System and Methods for Low Power Estimation of Blue Light Exposure Using a Camera Included in a User Computing Device

#32
20240255345
2024-08-01

Terminal device with ambient light detection function and ambient light detection method

#33
20240247979
2024-07-25

Optical sensor which can reduce power noise and power noise reduction method

#34
20240219228
2024-07-04

Processing method and electronic device

#35
20240210242
2024-06-27

PHOTOELECTRIC SENSOR CAPABLE OF RESISTING HIGH-FREQUENCY LIGHT INTERFERENCE

#36
20240210240
2024-06-27

NEAR-INFRARED LIGHT ACQUISITION CIRCUIT, METHOD, SYSTEM AND DEVICE

#37
20240142301
2024-05-02

PIXEL CIRCUIT AND TEMPERATURE SENSING CIRCUIT ADJUSTING SIGNALS IN THE SAME

#38
20240110828
2024-04-04

METHOD FOR DETERMINING THE OPERATING STATE OF A LIGHT-EMITTING IMPLANT

#39
20240102856
2024-03-28

Despeckling in optical measurement systems

#40
20240094052
2024-03-21

Optical module

#41
20240044704
2024-02-08

CIRCUITRY AND METHODS OF OPERATING A PHOTODIODE

#42
20240035884
2024-02-01

LIGHT RECEIVER CIRCUIT AND LIGHT SENSOR ARRAY COMPRISING A LIGHT RECEIVER CIRCUIT

#43
20240027352
2024-01-25

System for analog light measuring and photon counting in chemiluminescence measurements

#44
20240027276
2024-01-25

Apparatus, Method, and Computer-Readable Recording Medium for Measuring Temperature of Object Using Compensation of Board Temperature

#45
20240019299
2024-01-18

ULTRAVIOLET RADIOMETER

#46
20230422376
2023-12-28

Illumination device and method for calibrating an illumination device over changes in temperature, drive current, and time

#47
20230417596
2023-12-28

Balanced light detector

#48
20230392982
2023-12-07

PHOTOELECTRIC DETECTION DEVICE WITH SEALED DESIGN AND UNDISTORTED PHOTOELECTRIC SIGNALS, AND IMPLEMENTATION METHOD THEREOF

#49
20230375402
2023-11-23

Methods and devices for obtaining silicon photomultiplier data

#50
20230366731
2023-11-16

Pyranometer

#51
20230349753
2023-11-02

Emitter module for an LED illumination device

#52
20230343879
2023-10-26

PHOTOELECTRIC CONVERSION APPARATUS, OPTICAL DETECTION SYSTEM, AND MOVABLE BODY

#53
20230341258
2023-10-26

Method for detecting intensity of ambient light, and electronic device

#54
20230324220
2023-10-12

DYNAMIC RANGE EXTENSION OF SPAD-BASED DEVICES

#55
20230304857
2023-09-28

DESIGN FOR REDUCING DARK COUNT RATE OF SNSPD BASED ON TWO-WIRE STRUCTURE

#56
20230288252
2023-09-14

Electronic devices with ambient light sensor radio-frequency interference correction

#57
20230258496
2023-08-17

Optical system for improved reliability and performance

#58
20230236067
2023-07-27

READOUT CIRCUITS AND METHODS

#59
20230228621
2023-07-20

Ambient light sensing

#60
20230213382
2023-07-06

Systems and method for providing voltage compensation for single-photon avalanche diodes

#61
20230204509
2023-06-29

Fluorescence measuring device

#62
20230194433
2023-06-22

Analog light measuring and photon counting in chemiluminescence measurements comprising a luminometer controller to compare digitized photon count to a discreet-analog crossover value

#63
20230194338
2023-06-22

Device and method for detecting a light irradiating angle

#64
20230121432
2023-04-20

OPTICAL SENSING CIRCUIT AND OPTICAL SENSING METHOD

#65
20230102504
2023-03-30

Photoplethysmography front-end receiver

#66
20230091403
2023-03-23

Apparatus and method for quantitative characterization of a light detector

#67
20230077628
2023-03-16

Photometer and method of performing photometric measurements with a photometer

#68
20230073495
2023-03-09

LASER SCATTERED LIGHT MEASURING DEVICE

#69
20230035935
2023-02-02

Devices, systems, and methods for calibrating an optical measurement device

#70
20230030875
2023-02-02

PHOTODETECTOR BEHAVIOR MODELING

#71
20230030688
2023-02-02

Automatic ambient light cancellation method for optical front-end methods and apparatus

#72
20220408199
2022-12-22

Self-check protocol for use by ear-wearable electronic devices

#73
20220349748
2022-11-03

Photon counting analog front end with load balancing

#74
20220334225
2022-10-20

Light Source for Frequency-Modulated Continuous Wave (FMCW) LiDAR Device

#75
20220333983
2022-10-20

Method of stabilizing data of digital signals

#76
20220301475
2022-09-22

Method and apparatus for determining screen light intensity value, and storage medium

#77
20220286664
2022-09-08

Detection device and detection method using avalanche diode array and calibration matrix generating method thereof

#78
20220205839
2022-06-30

Photosensor device with dark current cancellation

#79
20220205838
2022-06-30

Balanced light detector

#80
20220204185
2022-06-30

Offset compensated photodiode amplifier

#81
20220202316
2022-06-30

Direct light differential measurement system

#82
20220170784
2022-06-02

System, device, and method for quantum correlation measurement with single photon avalanche diode arrays

#83
20220167479
2022-05-26

Illumination device and method for calibrating an illumination device over changes in temperature, drive current, and time

#84
20220163386
2022-05-26

Proximity sensing device

#85
20220155142
2022-05-19

Emitter module for an LED illumination device

#86
20220128728
2022-04-28

Methods and arrangements for false trigger prevention

#87
20220115366
2022-04-14

Photoelectric conversion apparatus, photo-detection system, and movable body

#88
20220107659
2022-04-07

OPTICAL-ELECTRICAL DEVICE USING HYBRID AUTOMATED TESTING EQUIPMENT

#89
20220074797
2022-03-10

Imaging device and calibration method

#90
20220057260
2022-02-24

Methods, systems, and apparatuses for accurate measurement of health relevant UV exposure from sunlight

#91
20220030186
2022-01-27

Solid imaging element, control method for solid imaging element, and electronic apparatus

#92
20220026270
2022-01-27

Determination method and light detection device

#93
20220026269
2022-01-27

Light detection device

#94
20220026268
2022-01-27

Light detection device having temperature compensated gain in avalanche photodiode

#95
20220018710
2022-01-20

ELECTRONIC APPARATUS, CORRECTION METHOD, AND PROGRAM

#96
20220011412
2022-01-13

Light sensor and ranging method

#97
20220011159
2022-01-13

Light sensor and calibration method thereof

#98
20220011158
2022-01-13

Light sensor and sensing method thereof comprising a control circuit to operate diodes of plural sensing sub-pixels in a Geiger mode or in an avalanche linear mode according to intensity of ambient light

#99
20210404868
2021-12-30

BALANCED PHOTODETECTOR AND METHODS THEREOF

#100
20210381896
2021-12-09

Compensate surface gloss in spectrum recovery

#101
20210373585
2021-12-02

Optical-electrical device using hybrid automated testing equipment

#102
20210364351
2021-11-25

Optoelectronic modules with temperature-independent characteristics

#103
20210356320
2021-11-18

Method for correcting optical sensor array module through characteristic evaluation

#104
20210352203
2021-11-11

Detection circuit, device and method for detecting light source flicker, and photoelectric detection device

#105
20210352202
2021-11-11

Flicker measurement device, flicker measurement method, flicker measurement program, flicker evaluation assistance device, flicker evaluation assistance method, and flicker evaluation assistance program

#106
20210325289
2021-10-21

Apparatus and method for quantitative characterization of a light detector

#107
20210293616
2021-09-23

Ambient light determination using physiological metric sensor data

#108
20210262856
2021-08-26

Light detection system, discharge probability calculating method, and received light quantity measuring method

#109
20210255036
2021-08-19

Optical receiving circuit

#110
20210255035
2021-08-19

Light detection system, discharge probability calculating method, and received light quantity measuring method

#111
20210247230
2021-08-12

Noise model-based converter with signal steps based on uncertainty

#112
20210223098
2021-07-22

System with a SPAD-based semiconductor device having dark pixels for monitoring sensor parameters

#113
20210164834
2021-06-03

Light sensor with a high sensitivity using a sigma-delta analog to digital converter and sensing method thereof

#114
20210138504
2021-05-13

System and a method for irradiating an object

#115
20210131864
2021-05-06

Sensing module and vital sign measuring device including the same

#116
20210131863
2021-05-06

Ambient light determination using physiological metric sensor data

#117
20210116296
2021-04-22

Methods, systems, and apparatuses for accurate measurement of health relevant UV exposure from sunlight

#118
20210102844
2021-04-08

Readout circuits and methods

#119
20210091783
2021-03-25

Method to operate an optical sensor arrangement with improved conversion accuracy and optical sensor arrangement

#120
20210088378
2021-03-25

Light sensor using pixel optical diffraction gratings having different pitches

#121
20210072077
2021-03-11

Offset nulling for optical power meters

#122
20210055155
2021-02-25

Balanced light detector

#123
20210050461
2021-02-18

Detection of photon by pairing avalanche photodiodes with different threshold voltages

#124
20210007192
2021-01-07

Illumination device and method for calibrating an illumination device over changes in temperature, drive current, and time

#125
20200413507
2020-12-31

LED light measurement

#126
20200393296
2020-12-17

TUNABLE GRAPHENE DETECTOR FOR BROADBAND TERAHERTZ DETECTION, IMAGING, AND SPECTROSCOPY

#127
20200393294
2020-12-17

Hybrid leakage-compensation scheme for improved correction range

#128
20200386617
2020-12-10

Method to operate an optical sensor arrangement with improved offset correction and optical sensor arrangement

#129
20200386616
2020-12-10

Method for counting photons by means of a photomultiplier

#130
20200386613
2020-12-10

Emitter module for an LED illumination device

#131
20200378901
2020-12-03

Determining one or more characteristics of light in an optical system

#132
20200378827
2020-12-03

Device and System for Measuring Flicker

#133
20200351464
2020-11-05

Image sensor with correction of detection error

#134
20200350869
2020-11-05

Noise suppressing interface circuit for device with control circuits in different noise environments

#135
20200340855
2020-10-29

Calibration circuit for use in sensor and related sensor thereof

#136
20200326234
2020-10-15

Optical sensing circuit, display panel and display sensing panel

#137
20200319218
2020-10-08

Automatic analysis apparatus and method for controlling automatic analysis apparatus

#138
20200319023
2020-10-08

Photosensitive circuit, driving method thereof and electronic device

#139
20200292378
2020-09-17

Photodetector device and optical encoder device

#140
20200284731
2020-09-10

Analog light measuring and photon counting with a luminometer system for assay reactions in chemiluminescence measurements

#141
20200284651
2020-09-10

Sensor arrangement and method for sensor measurement

#142
20200264039
2020-08-20

Leakage compensation for a detector

#143
20200249084
2020-08-06

LIGHT DETECTOR

#144
20200233065
2020-07-23

OPTICAL DETECTOR WITH DC COMPENSATION

#145
20200232844
2020-07-23

Bio illuminance measuring device for determining circadian action

#146
20200217800
2020-07-09

System for analog light measuring and photon counting in chemiluminescence measurements

#147
20200182690
2020-06-11

Method for ambient light subtraction

#148
20200178865
2020-06-11

Circuit arrangement for an optical monitoring system and method for optical monitoring

#149
20200173848
2020-06-04

DETECTOR

#150
20200124467
2020-04-23

Methods, systems, and apparatuses for accurate measurement of health relevant UV exposure from sunlight

#151
20200103275
2020-04-02

Analog front end for signal reading by having a variable bias voltage generation circuit correct characteristics of a sensor

#152
20200092540
2020-03-19

Detection device and detection method using avalanche diode array and calibration matrix generating method thereof

#153
20200080889
2020-03-12

Light sensing apparatus with automatic gain control

#154
20200073023
2020-03-05

SOLID-IMMERSION LENS FOCAL PLANE ARRAY

#155
20200018642
2020-01-16

Time-to-digital converter circuit and method for single-photon avalanche diode based depth sensing

#156
20200018639
2020-01-16

Shielding for electrodes in photoionization detector

#157
20190391009
2019-12-26

Ambient light sensor, light transmission analysis method, and system thereof

#158
20190365937
2019-12-05

Method and system for calibration of UV light sources

#159
20190365293
2019-12-05

Direct light differential measurement system with increased noise immunity

#160
20190334692
2019-10-31

Dual edge synchronization of analog input to reduce switch point jitter

#161
20190323951
2019-10-24

System and method for calibrating a melt pool monitoring system of an additive manufacturing machine

#162
20190310131
2019-10-10

Ultraviolet flame sensor with programmable sensitivity offset

#163
20190301932
2019-10-03

Color sensing ambient light sensor calibration

#164
20190212262
2019-07-11

Automatic analysis apparatus including a reaction container holding part having a surface that reflects light emitted from a light source

#165
20190212194
2019-07-11

Optical sensor arrangement and method for light sensing

#166
20190195687
2019-06-27

Light detector, correction coefficient calculation device, and correction coefficient calculation method

#167
20190191120
2019-06-20

Image sensor comprising detection error correction using correction coefficient based on count values from plural pixels

#168
20190178712
2019-06-13

Optical measurement module, optical measurement circuit, and electronic device

#169
20190170575
2019-06-06

Synthetic imaging systems using algorithms or mathematical transformations simulate optical effects of optical components

#170
20190170574
2019-06-06

Method and system for balancing optical receiver

#171
20190170571
2019-06-06

Emitter module for an LED illumination device

#172
20190114763
2019-04-18

Imaging-based optical soiling measurement device with self calibration features

#173
20190097733
2019-03-28

Optoelectronic receiver circuit with dark current correction function and dark current correction method thereof

#174
20180348051
2018-12-06

Device and system for measuring flicker

#175
20180348024
2018-12-06

Electronic device and method for controlling sensitivity of sensor on basis of window attributes

#176
20180337295
2018-11-22

Quantum dot photodetector apparatus and associated methods

#177
20180335297
2018-11-22

Optical liquid level measurement system for dispensing apparatus

#178
20180313689
2018-11-01

RECEIVED-LIGHT AMOUNT MEASUREMENT SYSTEM

#179
20180266881
2018-09-20

Photodetection device and object detection system using said photodetection device

#180
20180266879
2018-09-20

Ambient light sensor with photodiode leakage current compensation

#181
20180259392
2018-09-13

Optical measuring apparatus and adapter for optical measuring apparatus

#182
20180238734
2018-08-23

Methods and systems for modulation and demodulation of optical signals

#183
20180234628
2018-08-16

Infrared imaging device and signal correction method using infrared imaging device

#184
20180209841
2018-07-26

Systems and methods for calibrating an optical distance sensor

#185
20180180471
2018-06-28

Light Receiver Having a Plurality of Avalanche Photodiode Elements in Geiger Mode and Method for Temperature Compensation

#186
20180180467
2018-06-28

Photocell cover and method of use

#187
20180172508
2018-06-21

DETECTOR

#188
20180164446
2018-06-14

Photon measurement front-end circuit with integral module and a negative feedback module

#189
20180164158
2018-06-14

Method for correcting optical sensor array module through characteristic evaluation

#190
20180145645
2018-05-24

OPTICAL COUPLING CIRCUIT INCLUDING A LIGHT-RECEIVING UNIT PROVIDED NOT TO RECEIVE OPTICAL SIGNAL AND SIGNAL PROCESSING DEVICE

#191
20180143071
2018-05-24

Method for testing retinal implant

#192
20180142890
2018-05-24

Flame detecting system

#193
20180136419
2018-05-17

Multi-channel receiver optical sub-assembly and manufacturing method thereof

#194
20180120153
2018-05-03

Self-clocked low noise photoreceiver (SCLNP)

#195
20180115290
2018-04-26

Passive bias temperature compensation circuit module

#196
20180109326
2018-04-19

Optical receiver, active optical cable, and control method for optical receiver

#197
20180098011
2018-04-05

Infrared imaging device and method of updating fixed pattern noise data

#198
20180098009
2018-04-05

Infrared imaging device and method of updating fixed pattern noise data

#199
20180094971
2018-04-05

Protector for photon detector

#200
20180080820
2018-03-22

Ambient light sensor

#201
20180058937
2018-03-01

Differential circuit for pyroelectric infrared detector

#202
20180058927
2018-03-01

Reference light source device used for calibration of spectral luminance meter and calibration method using same

#203
20180058925
2018-03-01

Self-clocked low noise photoreceiver (SCLNP)

#204
20180054873
2018-02-22

Calibration of light sensors

#205
20180042088
2018-02-08

Light-emitting apparatus and display apparatus

#206
20180038732
2018-02-08

Light detection device and electronic apparatus

#207
20180031420
2018-02-01

Method for improving the dynamic range of a device for detecting light

#208
20180017440
2018-01-18

Method for processing items and device and use thereof

#209
20170299429
2017-10-19

Bias currents to reverse-bias photodiode in light detection system

#210
20170287991
2017-10-05

Light sensitive circuit, light sensing panel having the light sensitive circuit and display apparatus having the light sensing panel

#211
20170271530
2017-09-21

Low noise detectors for astronomy

#212
20170248464
2017-08-31

Radiation detection apparatus

#213
20170219426
2017-08-03

Systems and methods for calibrating an optical distance sensor

#214
20170202465
2017-07-20

Method, system and apparatus for measuring multiple signals in a body

#215
20170179912
2017-06-22

Gain calibration for an imaging system

#216
20170160129
2017-06-08

Dark current compensation for photon counting circuit

#217
20170139162
2017-05-18

Multi-channel receiver optical sub-assembly and manufacturing method thereof

#218
20170138788
2017-05-18

Gain normalization

#219
20170131142
2017-05-11

Method and system for balancing optical receiver

#220
20170105260
2017-04-13

Illumination device and method for calibrating an illumination device over changes in temperature, drive current, and time

#221
20170059401
2017-03-02

Auto-calibrating light sensor data of a mobile device

#222
20170033777
2017-02-02

Method and apparatus for controlling threshold voltage

#223
20170028360
2017-02-02

Virus removal membrane

#224
20170011274
2017-01-12

Methods and apparatus for deceiving optical augmentation

#225
20170010151
2017-01-12

SYSTEM AND METHOD FOR COMPENSATING SPECTROPHOTOMETER THERMAL DRIFT WITHOUT DIRECT TEMPERATURE MEASUREMENT

#226
20160377483
2016-12-29

Color difference meter module capable of performing real-time zero point adjustment and color measuring device using same

#227
20160377477
2016-12-29

Brightness calibration method used in optical detection system with a plurality of diffusers

#228
20160374596
2016-12-29

Direct light differential measurement system

#229
20160370224
2016-12-22

Sensing device, image sensing system and method thereof

#230
20160334453
2016-11-17

Determining failure of an ultraviolet sensor

#231
20160334271
2016-11-17

Utilizing a quench time to deionize an ultraviolet (UV) sensor tube

#232
20160299002
2016-10-13

Detection device having a feedback discharge control unit for detecting photons and method therefore

#233
20160285563
2016-09-29

Optical receiver, active optical cable, and control method for optical receiver

#234
20160273959
2016-09-22

Low-power APD bias controller, bias control method, and photoelectric receiver

#235
20160265969
2016-09-15

Image processing method capable of detecting noise and related navigation device

#236
20160265967
2016-09-15

Adjustment circuit and method for measuring optical parameter and optical measurement system

#237
20160258810
2016-09-08

Method and apparatus for inspection and metrology

#238
20160249435
2016-08-25

Path light feedback compensation

#239
20160245690
2016-08-25

Nucleic acid analysis device and diagnosis method

#240
20160238445
2016-08-18

Information acquisition apparatus and information acquisition method

#241
20160202118
2016-07-14

Apparatus for determining an optical property of an optical imaging system

#242
20160202117
2016-07-14

Electromagnetic power measurement and reporting

#243
20160195432
2016-07-07

OPTICAL TRANSCEIVER MODULE

#244
20160195431
2016-07-07

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