公开(公告)号：US11965782B2

公开(公告)日：2024-04-23

申请号：US17259977

申请日：2019-11-18

Applicant: Columbia Insurance Company

Inventor： Thomas P. Tomsia ,  Hugh S. Fairman ,  Christopher Sanders

IPC: G01J3/46 ,  G01N21/57

CPC classification number: G01J3/465 ,  G01J3/463 ,  G01N21/57 ,  G01J2003/466

Abstract: Described herein is a process for correcting an observed color difference between a color at a first gloss and the color at a second gloss different than the first gloss, said process comprising the steps of: (a) determining a first correction caused by a lightness (Y-value) of the color a first gloss; (b) determining a second correction caused by an inclusion of a first surface diffusion in gloss readings; (c) based on the first and second corrections, determining a specular correction caused by a difference in specular reflections from the color at the first gloss and the color at the second gloss; (d) determining tristimulus corrections based on the specular correction; (e) preparing corrected tristimulus values of the color at a second gloss; and (f) producing a paint composition for the color at the second gloss using the corrected tristimulus values.

公开(公告)号：US20230422376A1

公开(公告)日：2023-12-28

申请号：US18212994

申请日：2023-06-22

Applicant: Lutron Technology Company LLC

Inventor： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC: H05B47/10 ,  G01J3/46 ,  G01J3/50 ,  G01J1/02 ,  G01J3/02 ,  H05B45/22 ,  H05B45/24 ,  H05B47/24 ,  H05B47/21 ,  H05B45/12 ,  G01J1/32 ,  G01J1/42 ,  G01R31/44

CPC classification number: H05B47/10 ,  G01J3/465 ,  G01J3/505 ,  G01J1/0252 ,  G01J3/0286 ,  H05B45/22 ,  H05B45/24 ,  H05B47/24 ,  H05B47/22 ,  H05B45/12 ,  G01J1/32 ,  G01J1/42 ,  G01R31/44 ,  G01J2001/4252 ,  G01J2001/444

Abstract: An illumination device and method are provided herein for calibrating individual LEDs in the illumination device to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

公开(公告)号：US11835384B2

公开(公告)日：2023-12-05

申请号：US17612916

申请日：2020-05-12

Applicant: OSRAM Opto Semiconductors GmbH

Inventor： Daniel Dietze ,  Wolfgang Zinkl

IPC: G01J1/42 ,  G01J1/04 ,  G01J3/46 ,  G01J3/12

CPC classification number: G01J1/4228 ,  G01J1/0474 ,  G01J1/0488 ,  G01J1/4204 ,  G01J3/465 ,  G01J2003/1226

Abstract: In an embodiment, an optoelectronic measuring device includes a first detector configured to provide a first detector signal, a second detector configured to provide a second detector signal, wherein each of the first detector and the second detector is configured to detect electromagnetic radiation, a signal difference determiner configured to generate a difference signal by subtracting the second detector signal from the first detector signal and a spectral filter arranged in a beam path upstream of the second detector, wherein the spectral filter is configured to filter the electromagnetic radiation before detection by the second detector, wherein the optoelectronic measuring device is configured to measure an intensity of the electromagnetic radiation impinging on the optoelectronic measuring device.

公开(公告)号：US11723134B2

公开(公告)日：2023-08-08

申请号：US17669976

申请日：2022-02-11

Applicant: Lutron Technology Company LLC

Inventor： Horace C. Ho ,  Jason E. Lewis ,  David J. Knapp

IPC: G01J1/02 ,  H05B45/18 ,  H05B47/10 ,  G01J3/46 ,  G01J3/50 ,  G01J3/02 ,  H05B45/22 ,  H05B45/24 ,  H05B47/24 ,  H05B47/21 ,  H05B45/12 ,  G01J1/32 ,  G01J1/42 ,  G01R31/44 ,  G01J1/44 ,  H05B47/105

CPC classification number: H05B47/10 ,  G01J1/0252 ,  G01J1/32 ,  G01J1/42 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/505 ,  G01R31/44 ,  H05B45/12 ,  H05B45/22 ,  H05B45/24 ,  H05B47/22 ,  H05B47/24 ,  G01J2001/4252 ,  G01J2001/444 ,  H05B45/18 ,  H05B47/105

Abstract: An illumination device and method are provided herein for calibrating individual LEDs in the illumination device to obtain a desired luminous flux and a desired chromaticity of the device over changes in drive current, temperature, and over time as the LEDs age. The calibration method may include subjecting the illumination device to a first ambient temperature, successively applying at least three different drive currents to a first LED to produce illumination at three or more different levels of brightness, obtaining a plurality of optical measurements from the illumination produced by the first LED at each of the at least three different drive currents, obtaining a plurality of electrical measurements from the photodetector and storing results of the obtaining steps within the illumination device to calibrate the first LED at the first ambient temperature. The plurality of optical measurements may generally include luminous flux and chromaticity, the plurality of electrical measurements may generally include induced photocurrents and forward voltages, and the calibration method steps may be repeated for each LED included within the illumination device and upon subjecting the illumination device to a second ambient temperature.

公开(公告)号：US09984307B2

公开(公告)日：2018-05-29

申请号：US14900170

申请日：2015-01-14

Applicant: PAPALAB CO., LTD.

Inventor： Makoto Kato

IPC: G06K9/46 ,  G01J3/46 ,  G06K9/62 ,  G06T7/90 ,  G06T7/00 ,  H04N5/232 ,  H04N5/225 ,  G01J3/50 ,  G01J3/02 ,  G01J3/28

CPC classification number: G06K9/4642 ,  G01J3/0202 ,  G01J3/10 ,  G01J3/462 ,  G01J3/465 ,  G01J3/50 ,  G01J3/504 ,  G01J3/51 ,  G01J2003/2813 ,  G06K9/4652 ,  G06K9/6201 ,  G06K9/6212 ,  G06T7/001 ,  G06T7/90 ,  G06T2207/10024 ,  H04N5/2251 ,  H04N5/2256 ,  H04N5/23229

Abstract: An object is to ensure clear and easy quantification of the textures such as metallic texture and shiny texture of pearl pigment and to rationalize comparison inspection between an inspection object and a reference object. A coloring inspection apparatus 1 includes a camera 2 that is configured to have three spectral sensitivities (S1(λ), S2(λ), S3(λ)) linearly and equivalently converted to a CIE XYZ color matching function, an arithmetic processing unit 3 that is configured to obtain and compute coloring data by conversion of an image which has three spectral sensitivities and is obtained by the camera 2 into tristimulus values X, Y and Z in a CIE XYZ color system, and lighting units 6 that are configured to illuminate an automobile 5 as an example of measuring object. The coloring inspection apparatus 1 computes a color distribution consistency index that represents a ratio of overlap of two xyz chromaticity histogram distributions of an inspection object Q and a reference object R, so as to inspect color.

公开(公告)号：US09952102B1

公开(公告)日：2018-04-24

申请号：US15628803

申请日：2017-06-21

Applicant: Datacolor Holding AG

Inventor： Zhiling Xu ,  Michael H. Brill

IPC: G01N21/25 ,  G01J3/52 ,  G01J3/02 ,  G01J3/46 ,  G01J3/51

CPC classification number: G01J3/524 ,  G01J3/0297 ,  G01J3/46 ,  G01J3/462 ,  G01J3/465 ,  G01J3/51 ,  G01J3/513 ,  G01N21/25

Abstract: In one example, an electronic signal is received from a target color measurement instrument that includes a plurality of color channels. A response of the target color measurement instrument to a light emitted by a target light emitting device is extracted from the signal. The response is calibrated to minimize a difference between the response and an output of a color matching function of a standard observer. Calibrating includes multiplying the response by a calibration matrix. The calibration matrix combines measurements of a first plurality of lights from a tunable light source and measurements of a second plurality of lights from the target light emitting device. A first subset of the measurements of the first plurality and second plurality of lights are made by the target color measurement instrument and a second subset of the measurements of the first plurality and second plurality of lights are made by a reference spectroradiometer.

公开(公告)号：US09894338B2

公开(公告)日：2018-02-13

申请号：US15155488

申请日：2016-05-16

Applicant: RAH COLOR TECHNOLOGIES LLC

Inventor： Richard A. Holub

IPC: G09G5/02 ,  H04N9/64 ,  G01J3/02 ,  G01J3/28 ,  G01J3/46 ,  G01J3/52 ,  H04N1/60 ,  G01J3/51 ,  G03F7/20 ,  H04N17/02 ,  G01B11/00 ,  G01J3/50 ,  G06T5/00 ,  G06T5/40 ,  H04N9/69 ,  G06T7/90 ,  G01J3/18

CPC classification number: H04N9/646 ,  G01B11/002 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/0262 ,  G01J3/0291 ,  G01J3/1838 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/46 ,  G01J3/462 ,  G01J3/463 ,  G01J3/465 ,  G01J3/505 ,  G01J3/51 ,  G01J3/524 ,  G01J2003/283 ,  G01J2003/2866 ,  G03F7/70058 ,  G06T5/005 ,  G06T5/40 ,  G06T7/90 ,  G09G5/02 ,  G09G2320/0276 ,  G09G2320/043 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2320/0693 ,  G09G2320/08 ,  H04N1/6055 ,  H04N1/6058 ,  H04N9/643 ,  H04N9/69 ,  H04N17/02

Abstract: In a color imaging system, multiple rendering devices are provided at different nodes along a network. Each rendering device has a color measurement instrument for calibrating the color presented by the rendering device. A rendering device may be a printer in which the measuring of color samples on a sheet rendered by the printer is provided by a sensor coupled to a transport mechanism which moves the sensor and sheet relative to each other, where the sensor provides light from the samples to a spectrograph. A rendering device may also be a display having a member supporting a color measuring instrument for receiving light from an area of the screen. The color measuring instruments provide for non-contact measurements of color samples rendered on a display or a sheet, and are self-calibrating by the use of calibration references.

公开(公告)号：US20170241833A1

公开(公告)日：2017-08-24

申请号：US15523382

申请日：2015-04-15

Applicant: EVERFINE PHOTO-E-INFORMATION CO., LTD

Inventor： Jiangen PAN ,  Jing YANG ,  Chao ZHOU

IPC: G01J1/04 ,  G01J1/10 ,  G01J1/42

CPC classification number: G01J1/0488 ,  G01J1/029 ,  G01J1/10 ,  G01J1/4228 ,  G01J3/465 ,  G01J3/51 ,  G01J3/513 ,  G01J3/524

Abstract: The present invitation relates to an optical radiation measurement method based on light filter units, comprising the steps of: 1) providing characteristic filter units and correction light filter units in front of detection units to obtain multiple measured response values of an object to be detected; and, 2) selecting one or more sampling regions within a waveband to be detected, and calculating, according to a corresponding simultaneous expression/equation system of the measured response values, a spectral power distribution within the waveband to be detected. In this method, by introducing a small number of correction light filter units, the spectral power distribution within the entire waveband to be detected can be obtained without using a large number of narrow waveband color filters. In addition, a light radiation measurement apparatus is disclosed.

公开(公告)号：US20160232828A1

公开(公告)日：2016-08-11

申请号：US14870924

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Zhang Jia ,  Christopher S. Erickson

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G01J1/0407 ,  G01J1/0422 ,  G01J1/32 ,  G01J1/4204 ,  G01J3/0205 ,  G01J3/0216 ,  G01J3/465 ,  G01J3/513 ,  G09G2360/144

Abstract: An electronic device may be provided with a display mounted in a housing. A color sensing ambient light sensor may measure the color of ambient light. The color sensing ambient light sensor may be mounted in alignment with an ambient light sensor window formed in an inactive area of the display. The color sensing ambient light sensor may be formed from detectors on a semiconductor substrate. The detectors may include detectors that have spectral sensitivity profiles matching those of color matching functions. The color sensing ambient light sensor may include an infrared light detector. Light redirecting structures such as a diffuser, prism film, negative lens film, or privacy film may be used in directing light into the ambient light sensor. The color sensing ambient light sensor may be calibrated by exposing the sensor to light sources of different types.

Abstract translation: 电子设备可以设置有安装在壳体中的显示器。 颜色感测环境光传感器可以测量环境光的颜色。 颜色感测环境光传感器可以与形成在显示器的非活动区域中的环境光传感器窗口对准地安装。 颜色感测环境光传感器可以由半导体衬底上的检测器形成。 检测器可以包括具有与匹配功能匹配的光谱灵敏度分布的检测器。 颜色感测环境光传感器可以包括红外光检测器。 诸如漫射器，棱镜膜，负透镜膜或隐私膜的光重定向结构可以用于将光引导到环境光传感器中。 可以通过将传感器暴露于不同类型的光源来校准颜色感测环境光传感器。

公开(公告)号：US09404802B2

公开(公告)日：2016-08-02

申请号：US14702369

申请日：2015-05-01

Applicant: RAH COLOR TECHNOLOGIES LLC

Inventor： Richard A. Holub

IPC: G01J3/46 ,  G09G5/02 ,  H04N1/60 ,  H04N17/02

CPC classification number: H04N9/646 ,  G01B11/002 ,  G01J3/02 ,  G01J3/0218 ,  G01J3/0224 ,  G01J3/0262 ,  G01J3/0291 ,  G01J3/1838 ,  G01J3/28 ,  G01J3/2823 ,  G01J3/46 ,  G01J3/462 ,  G01J3/463 ,  G01J3/465 ,  G01J3/505 ,  G01J3/51 ,  G01J3/524 ,  G01J2003/283 ,  G01J2003/2866 ,  G03F7/70058 ,  G06T5/005 ,  G06T5/40 ,  G06T7/90 ,  G09G5/02 ,  G09G2320/0276 ,  G09G2320/043 ,  G09G2320/0606 ,  G09G2320/0626 ,  G09G2320/066 ,  G09G2320/0666 ,  G09G2320/0693 ,  G09G2320/08 ,  H04N1/6055 ,  H04N1/6058 ,  H04N9/643 ,  H04N9/69 ,  H04N17/02

Abstract: In a color imaging system, multiple rendering devices are provided at different nodes along a network. Each rendering device has a color measurement instrument for calibrating the color presented by the rendering device. A rendering device may be a printer in which the measuring of color samples on a sheet rendered by the printer is provided by a sensor coupled to a transport mechanism which moves the sensor and sheet relative to each other, where the sensor provides light from the sample to a spectrograph. A rendering device may also be a display having a member supporting a color measuring instrument for receiving light from an area of the screen. The color measuring instruments provide for non-contact measurements of color samples rendered on a display or a sheet, and are self-calibrating by the use of calibration references.

Abstract translation: 在彩色成像系统中，沿网络的不同节点提供多个渲染设备。 每个渲染设备具有用于校准由渲染设备呈现的颜色的颜色测量仪器。 渲染装置可以是其中由打印机呈现的片材上的颜色样本的测量由耦合到传送机构的传感器提供的传感器和片材相对于彼此移动的打印机，其中传感器提供来自样品的光 到一个光谱仪。 呈现装置也可以是具有支撑用于从屏幕的区域接收光的颜色测量装置的部件的显示器。 色彩测量仪器提供在显示器或纸张上呈现的彩色样本的非接触式测量，并通过使用校准参考进行自校准。