公开(公告)号：US06992803B2

公开(公告)日：2006-01-31

申请号：US09851099

申请日：2001-05-08

Applicant: Chin Chang

Inventor： Chin Chang

IPC: H04N1/46

CPC classification number: G01J1/32 ,  G01J3/10 ,  G01J3/465 ,  G01J3/506 ,  G01J3/51 ,  G01J3/513 ,  G01J2001/4252 ,  G01J2003/1282

Abstract: A system and method for identifying primary color chromaticity coordinates of a red, green and blue light sources includes a tristimulus filter the receives the combined light generated by the light sources. The light sources are preferably a group of red, green and blue light emitting diodes. A processor is configured to generate a plurality of test control signals that sets a desired intensity value for each of the red, green and blue LEDs. Based on these test control signals, the system is configured to measure three sets of chromaticity coordinates corresponding to the combined light generated by these red, green and blue LEDs. The processor thereafter calculates the color chromaticity coordinates of the LEDs, based on the measured coordinates of the combined light, and the intensity values of the LEDs, and the intensity values of the combined light. This calculation in accordance with one embodiment of the invention is accomplished by solving a matrix equation. Once the color coordinates of the individual light sources is uniquely calculated, the system measures the intensity values of light for each of the light sources that is necessary to provide a combined light with a desired color chromaticity coordinates. These intensity values can be used in a feedback control circuit to maintain the desired combined light as the LEDs change their characteristics from batch to batch or over time.

公开(公告)号：US20050116942A1

公开(公告)日：2005-06-02

申请号：US10947696

申请日：2004-09-23

Applicant: Peter Vander Jagt ,  Ann Xiang ,  Kevin Behrens ,  Gregory Williams

Inventor： Peter Vander Jagt ,  Ann Xiang ,  Kevin Behrens ,  Gregory Williams

IPC: G01J3/02 ,  G01J3/46 ,  G01J3/51 ,  G09G5/00

CPC classification number: G01J3/51 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/0224 ,  G01J3/0272 ,  G01J3/46 ,  G01J3/462 ,  G01J3/506 ,  G01J3/513

Abstract: A color measurement system includes a multi-purpose filter and optics assembly. The filter and optics assembly includes at least one tube array for segmenting received light. The segmented light is mixed and the polarization qualities of the light are modified so to minimize the effects caused by angular adjustments. A diffuser mixes the segmented light. Additionally, the color measurement system includes an ambient light attachment for collecting light from the viewing area surrounding the computer display. The ambient light collected is then analyzed, and a viewing area profile is created. The viewing area profile then can be used by software to adjust the colors displayed on the computer displays.

Abstract translation: 色彩测量系统包括多功能滤光片和光学组件。 滤光器和光学组件包括用于分割接收的光的至少一个管阵列。 分段光被混合，并且改变光的偏振质量，以便最小化由角度调整引起的影响。 扩散器混合分段的光。 此外，色彩测量系统包括用于收集来自计算机显示器周围的观看区域的光的环境光附件。 然后分析收集的环境光，并创建观看区域轮廓。 然后可以通过软件使用观看区域轮廓来调整计算机显示器上显示的颜色。

公开(公告)号：US20040114041A1

公开(公告)日：2004-06-17

申请号：US10659447

申请日：2003-09-09

Inventor： Paul David Doyle ,  Rafael Calderon ,  Matthew C. Boyko ,  Roy Bragadeste ,  Don Moore ,  Mike McKay ,  Karl Lang ,  Andrew Bryant ,  Martin Kolinek

IPC: H04N017/02

CPC classification number: H04N17/04 ,  G01J3/46 ,  G01J3/463 ,  G01J3/506 ,  G09G5/06 ,  G09G2320/0693 ,  H04N9/73

Abstract: A color calibration system includes a visual display terminal (VDT), a color calibration sensor optically coupled to the VDT, and a computer processing unit (CPU) electrically coupled to the VDT and the color calibration sensor. The VDT has a display screen and a plurality of color channels, each color channel having an intensity input, a bias input, and a gain input. The VDT produces an image on the display screen responsive to the intensity input. The color calibration sensor provides values responsive to the chromaticity and luminance of a test patch portion of the image on the display screen. The CPU performs calibration of the VDT including setting the bias of each color channel to reduce the difference between a target black point and the test patch with the intensity input at a minimum value for each color channel.

Abstract translation: 颜色校准系统包括视觉显示终端（VDT），光耦合到VDT的颜色校准传感器，以及电耦合到VDT和颜色校准传感器的计算机处理单元（CPU）。 VDT具有显示屏幕和多个颜色通道，每个颜色通道具有强度输入，偏置输入和增益输入。 响应于强度输入，VDT在显示屏幕上产生图像。 颜色校准传感器提供响应于显示屏上图像的测试片部分的色度和亮度的值。 CPU执行VDT的校准，包括设置每个颜色通道的偏置，以针对每个颜色通道以最小值的强度输入来减小目标黑点与测试贴片之间的差异。

公开(公告)号：US20240331185A1

公开(公告)日：2024-10-03

申请号：US18129089

申请日：2023-03-31

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Yi Chien ,  Shih-Hsuan Chen ,  Wen-Lung Hung ,  Po-Yuan Hsieh

IPC: G06T7/70 ,  G01J3/50 ,  G06T5/20 ,  G06T7/90

CPC classification number: G06T7/70 ,  G01J3/506 ,  G06T5/20 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/20081 ,  G06T2207/20084

Abstract: A method of obtaining brightness information of a display panel having a plurality of pixels includes steps of: obtaining positioning information indicating positions of the plurality of pixels on a test picture; lighting up the plurality of pixels and capturing the test picture; measuring the plurality of pixels according to the positioning information, to obtain a light intensity distribution of each of the plurality of pixels in the test picture; and calculating the brightness information of each of the plurality of pixels according to the light intensity distribution.

公开(公告)号：US11988559B2

公开(公告)日：2024-05-21

申请号：US17148482

申请日：2021-01-13

Applicant: QISDA CORPORATION

Inventor： Chun-Jung Chen ,  Yung-Yeh Chang

IPC: H05K5/02 ,  G01J3/02 ,  G01J3/50 ,  G06F1/16 ,  G09G5/02

CPC classification number: G01J3/506 ,  G01J3/0202 ,  G01J3/0291 ,  G06F1/16 ,  H05K5/0217 ,  G09G5/02 ,  G09G2320/0242 ,  G09G2320/0693

Abstract: A color calibrator includes a first casing, a second casing and an optical sensor. The first casing has an accommodating recess and a plurality of first positioning members, wherein the first positioning members are arranged along an axial direction of the accommodating recess. The second casing is telescopically disposed in the accommodating recess. The second casing has a second positioning member. One of the first positioning member and the second positioning member is a magnet. Another one of the first positioning member and the second positioning member is a magnet or a magnetic induction material. The second positioning member cooperates with one of the first positioning members to position the second casing at one of a plurality of telescopic positions with respect to the first casing. The optical sensor is disposed on the second casing.

公开(公告)号：US20240110829A1

公开(公告)日：2024-04-04

申请号：US18473307

申请日：2023-09-25

Applicant: CHAMP VISION DISPLAY INC.

Inventor： Chin-Ku Liu ,  Chia-Hung Yu

IPC: G01J3/02 ,  G01J3/06 ,  G01J3/50

CPC classification number: G01J3/0202 ,  G01J3/0278 ,  G01J3/0291 ,  G01J3/06 ,  G01J3/506 ,  G01J2003/062

Abstract: A display device and a light detection module are provided. The display device includes a display panel and the light detection module. The light detection module is capable of detecting an optical feature of a display surface of the display panel, and includes a shaft portion, a rod portion, and a light detector. The shaft portion has a shaft extension direction. The rod portion has a rod extension direction, and takes the shaft portion as a rotation shaft. An included angle between the rod extension direction and the shaft extension direction is between 125 degrees and 145 degrees.

公开(公告)号：US20230314223A1

公开(公告)日：2023-10-05

申请号：US17997205

申请日：2021-03-31

Applicant: WUHAN JINGCE ELECTRONIC GROUP CO., LTD ,  WUHAN JINGLI ELECTRONIC TECHNOLOGY CO., LTD

Inventor： Changdong Ou ,  Zengqiang Zheng ,  Shiwen Luo ,  Zhikun Hong ,  Zhou Wang ,  Fan Zhong ,  Luning Liu ,  Xiaofan Feng ,  Ronghua Liu ,  Yafei Shen ,  Kai Chen

IPC: G01J3/50 ,  G09G3/32 ,  G01J3/02 ,  G01J3/28

CPC classification number: G01J3/506 ,  G09G3/32 ,  G01J3/0208 ,  G01J3/0218 ,  G01J3/2823 ,  G09G2300/026 ,  G09G2320/0693 ,  G01J2003/2866

Abstract: A chromaticity measurement method and device for calibration of a tiled LED display screen (A) having the advantages of convenience in operation and accurate measurement. The chromaticity measurement method includes: imaging emergent light from the tiled LED display screen (A) with an objective lens (1); receiving a light beam from the objective lens (1) with a transflective lens (2) and performing beam splitting to obtain a first light beam and a second light beam; receiving the first light beam with an imaging sensor (3) to obtain an original image; receiving the second light beam in a two-dimensional lattice form with a movable optical fiber array coupling device (4), and converting the second light beam into one-dimensional lattice light; and obtaining chromaticity information and spectrum information of a plurality of regions on the tiled LED display screen (A) according to the one-dimensional lattice light with a spectrum acquisition device (5). The emergent light is split, analysis is performed with the imaging sensor (3), chromaticity measurement and spectrum measurement are performed with a spectrometer (52), and calibration and correction are performed on the imaging sensor (3) on the basis of measurement results of the spectrometer (52).

公开(公告)号：US20180172509A1

公开(公告)日：2018-06-21

申请号：US15385776

申请日：2016-12-20

Applicant: Oculus VR, LLC

Inventor： Ye Yin ,  Simon Hallam ,  Shizhe Shen ,  Evan M. Richards

IPC: G01J3/02 ,  G02B26/08 ,  G01J1/04

CPC classification number: G01J3/0218 ,  G01J1/0422 ,  G01J1/0425 ,  G01J1/0474 ,  G01J1/4228 ,  G01J3/0216 ,  G01J3/506 ,  G02B5/0278 ,  G02B6/0005 ,  G02B26/08

Abstract: An apparatus for measuring characteristics of an electronic display panel includes an array of optical elements. Each optical element has a first surface and a second surface. The first surface faces the electronic display panel and receives light from pixels of the electronic display panel. The second surface faces away from the electronic display panel and has an area smaller than the area of the first surface. The second surface emits a combined version of the light received by the first surface. The apparatus further includes a light sensor facing the second surface to measure one or more parameters of the emitted light.

公开(公告)号：US09995630B2

公开(公告)日：2018-06-12

申请号：US15363362

申请日：2016-11-29

Applicant: SATURN LICENSING LLC

Inventor： Kunihiko Nagamine ,  Satoshi Tomioka

IPC: G01J3/50 ,  G01J3/46 ,  H04N17/02

CPC classification number: G01J3/506 ,  G01J3/462 ,  H04N17/02

Abstract: An unevenness inspection apparatus includes circuitry that is configured to obtain a pickup image of a test object and modify a chroma value of a pixel in the pickup image to correct a gain of the pickup image associated with the pixel for generating a color unevenness inspection image. The circuitry is configured to generate a luminance unevenness inspection image based on the pickup image and calculate an evaluation parameter using both of the color unevenness inspection image and the luminance unevenness inspection image. The circuitry is configured to perform unevenness inspection using the calculated evaluation parameter, which is calculated based on unevenness visibility for both color and luminance.

公开(公告)号：US20180128685A1

公开(公告)日：2018-05-10

申请号：US15797818

申请日：2017-10-30

Applicant: ESSILOR INTERNATIONAL (Compagnie Generale d'Optique)

Inventor： Marius PELOUX ,  Loic BAILLON ,  Ludovic Jouard

IPC: G01J3/50 ,  G02B27/01 ,  G02B3/12 ,  G06T7/90

CPC classification number: G01J3/506 ,  G01M11/0257 ,  G02B3/12 ,  G02B27/017 ,  G02B27/0172 ,  G02B27/0176 ,  G02B27/62 ,  G02B2027/011 ,  G02B2027/0112 ,  G02B2027/0159 ,  G02B2027/0178 ,  G06T7/90

Abstract: A method for determining an optical performance parameter of a head mounted display device adapted for a wearer includes a head mounted display device providing step, during which a head mounted display device adapted for a wearer is provided,an optical measurement device providing step, during which an optical measurement device is provided that includes an entrance pupil and a sensor receiving light through the entrance pupil, a positioning step, during which the optical measurement device and the head mounted display device are positioned so that the position of the entrance pupil of the optical measurement device corresponds to the position of the pupil of the wearer when wearing the head mounted display device, an optical performance parameter determining step during which at least one optical performance parameter of the head mounted see-through display device is determined based on the data measured by the optical measurement device.