公开(公告)号：US11953629B2

公开(公告)日：2024-04-09

申请号：US17367443

申请日：2021-07-05

Applicant: Guangzhou Tyrafos Semiconductor Technologies Co., LTD

Inventor： Ping-Hung Yin ,  Jia-Shyang Wang

IPC: G01S7/4865 ,  G01J1/44 ,  G01S7/481 ,  G01S7/484 ,  G01S7/4863 ,  G01S17/10 ,  G01S17/14 ,  G04F10/00 ,  H01L27/144 ,  H01L27/146 ,  H01L31/107

CPC classification number: G01S7/4865 ,  G01J1/44 ,  G01S7/4814 ,  G01S7/4816 ,  G01S7/484 ,  G01S7/4863 ,  G01S17/10 ,  G01S17/14 ,  G04F10/005 ,  H01L27/1446 ,  H01L27/14609 ,  H01L31/107 ,  G01J2001/442 ,  G01J2001/444 ,  G01J2001/4466 ,  G01J2001/448

Abstract: A light sensor and a ranging method are provided. The light sensor includes a light source, a sensing sub-pixel, and a control circuit. The sensing sub-pixel includes a diode. The control circuit operates the diode in a Geiger mode or an avalanche linear mode. The control circuit includes a time-to-digital converter, and the time-to-digital converter includes a counting circuit. The counting circuit includes a plurality of counting units. When the time-to-digital converter receives a sensing signal provided by the sensing sub-pixel, the control circuit generates a plurality of count values according to the sensing signal through the counting units of the counting circuit, where the count values are histogram data corresponding to a distance sensing result.

公开(公告)号：US20240027276A1

公开(公告)日：2024-01-25

申请号：US18265834

申请日：2020-12-09

Applicant: U ELECTRONICS CO., LTD.

Inventor： Joon-Sub Lee ,  Tae-Hwan Eom ,  Min Kyu Lee

IPC: G01J5/48 ,  G01J5/52 ,  G01J5/06 ,  G01J1/44 ,  H04N23/23

CPC classification number: G01J5/48 ,  G01J5/52 ,  G01J5/06 ,  G01J1/44 ,  H04N23/23 ,  G01J2001/444

Abstract: An apparatus for measuring temperature of an object using compensation of board temperature include an infrared light sensor module for providing output voltage due to the infrared light emitted by an object; a board temperature compensation module for compensating the provided output voltage to the output voltage at the reference configuration temperature of the board using a first function of output voltage to board temperature obtained at a reference configuration temperature of a blackbody; and a calculation module for obtaining the temperature of the object from the compensated output voltage using a second function of temperature of the blackbody to the output voltage obtained at a reference configuration temperature of the board.

公开(公告)号：US11867557B2

公开(公告)日：2024-01-09

申请号：US17412598

申请日：2021-08-26

Applicant: Analog Devices International Unlimited Company

Inventor： Jinhua Ni ,  Hui Shen

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/444

Abstract: Automatic ambient light cancellation for an optical front end. The present disclosure includes a coarse loop and fine loop in a feedback circuit configured to cancel out currents generated by detection of ambient light. An optical front end comprises a single-ended photo-diode connected to a transimpedance amplifier (TIA) followed by a buffer stage to generate differential output. A feedback loop controls a current digital to analog converter (iDAC) which is used to cancel out undesired current (e.g., from ambient light). This results in the TIA from saturating and maintain good signal quality with greater sensitivity.

公开(公告)号：US20230375402A1

公开(公告)日：2023-11-23

申请号：US18308915

申请日：2023-04-28

Applicant: Meso Scale Technologies, LLC.

Inventor： Manish Kochar

IPC: G01J1/44

CPC classification number: G01J1/44 ,  G01J2001/4466 ,  G01J2001/448 ,  G01J2001/444

Abstract: Systems and methods for improving assay results obtained by silicon photomultiplier devices are provided. Systems may include assay devices including silicon photomultiplier devices and computing systems. Systems may further include processing components and storage units configured for receiving silicon photomultiplier device input and output information and for determining silicon photomultiplier device temperatures.

公开(公告)号：US11774290B2

公开(公告)日：2023-10-03

申请号：US16895889

申请日：2020-06-08

Applicant: DATACOLOR INC.

Inventor： Zhiling Xu ,  Bill Binder

IPC: G01J3/46 ,  G01N21/55 ,  G06F17/16 ,  G01J1/44 ,  G01J3/52 ,  G01J3/50

CPC classification number: G01J3/462 ,  G01J3/524 ,  G01N21/55 ,  G06F17/16 ,  G01J3/501 ,  G01J2001/444 ,  G01J2003/467

Abstract: In accordance with one or more implementations of the apparatus, system and methods described, a sample measurement device is provided that is configured to measure the color of a sample. The sample measurement device includes at least one light source configured to illuminate the sample; at least one light sensor configured to output a signal in response to light emitted by light source and reflected off the sample being received by at least a portion of the light sensor; and a processor configured to receive the signal and calculate a color value for the sample, the processor configured to calculate the color value by at least adjusting the signal using a calibration factor.

公开(公告)号：US11740123B2

公开(公告)日：2023-08-29

申请号：US17665921

申请日：2022-02-07

Applicant: Lutron Technology Company LLC

Inventor： Kuo-Lih Chang ,  Mickey Malone ,  Horace C. Ho

IPC: G01J1/02 ,  G01J3/46 ,  G01J3/50 ,  G01J3/02 ,  G01J1/32 ,  H05B45/20 ,  H05B45/46 ,  H05B47/19 ,  G01J1/44 ,  G01J1/42 ,  H05B47/195

CPC classification number: G01J1/0252 ,  G01J1/32 ,  G01J3/0286 ,  G01J3/465 ,  G01J3/502 ,  H05B45/20 ,  H05B45/46 ,  H05B47/19 ,  G01J2001/4252 ,  G01J2001/444 ,  H05B47/195

Abstract: An illumination device comprises one or more emitter modules having improved thermal and electrical characteristics. According to one embodiment, each emitter module comprises a plurality of light emitting diodes (LEDs) configured for producing illumination for the illumination device, one or more photodetectors configured for detecting the illumination produced by the plurality of LEDs, a substrate upon which the plurality of LEDs and the one or more photodetectors are mounted, wherein the substrate is configured to provide a relatively high thermal impedance in the lateral direction, and a relatively low thermal impedance in the vertical direction, and a primary optics structure coupled to the substrate for encapsulating the plurality of LEDs and the one or more photodetectors within the primary optics structure.

公开(公告)号：US20230213382A1

公开(公告)日：2023-07-06

申请号：US18148290

申请日：2022-12-29

Applicant: Shanghai Lingfang Technology Co., Ltd.

Inventor： Jun WANG ,  Ning Zhang ,  Zheao Ma ,  Jiaxing Liu ,  Wei Yuan

IPC: G01J1/44 ,  G01J1/42

CPC classification number: G01J1/44 ,  G01J1/4228 ,  G01J2001/4466 ,  G01J2001/444

Abstract: The present invention is directed to electrical circuits and methods. According to a specific embodiment, the present invention provides a voltage compensation mechanism for one or more single-phone avalanche diodes (SPADs). A reference voltage is generated based at least on an operating voltage of the SPADs. The reference voltage is coupled to a charge pump that generates a compensation voltage for the diodes. There are other embodiments as well.

公开(公告)号：US10078010B2

公开(公告)日：2018-09-18

申请号：US14978172

申请日：2015-12-22

Applicant: Katsuhiko Aisu ,  Hirofumi Watanabe ,  Takaaki Negoro ,  Yoshinori Ueda ,  Yasukazu Nakatani ,  Kazuhiro Yoneda ,  Katsuyuki Sakurano

Inventor： Katsuhiko Aisu ,  Hirofumi Watanabe ,  Takaaki Negoro ,  Yoshinori Ueda ,  Yasukazu Nakatani ,  Kazuhiro Yoneda ,  Katsuyuki Sakurano

IPC: G01J1/44 ,  H04N5/361 ,  H04N5/365 ,  H04N5/378

CPC classification number: G01J1/44 ,  G01J2001/444 ,  G01J2001/4473 ,  H04N5/361 ,  H04N5/3655 ,  H04N5/378

Abstract: A photoelectric conversion device includes a pixel cell including a phototransistor, a reference cell including a reference transistor having a temperature characteristic identical to that of the phototransistor and having a fixed electrical state, an analog-to-digital converter that converts an analog output of the pixel cell into a digital output, a correction amount computation unit that computes a correction amount for the digital output of the analog-to-digital converter based on an output of the reference cell and a reference value, and a correction unit that corrects the digital output of the analog-to-digital converter based on the correction amount.

公开(公告)号：US10018502B2

公开(公告)日：2018-07-10

申请号：US14800816

申请日：2015-07-16

Applicant: FUNAI ELECTRIC CO., LTD.

Inventor： Atsushi Mushimoto ,  Ryusuke Horibe ,  Manabu Murayama ,  Yuichiro Masuda ,  Tomohisa Hirai ,  Shingo Setono

IPC: G01C3/08 ,  G01J1/02 ,  G01S17/08 ,  G01S7/481 ,  G01J1/42 ,  G01J1/44 ,  G01S17/42 ,  G01S7/497

CPC classification number: G01J1/0238 ,  G01J1/4257 ,  G01J1/44 ,  G01J2001/444 ,  G01S7/4817 ,  G01S7/4972 ,  G01S17/08 ,  G01S17/42

Abstract: A laser scanner includes: a light source; a scanning mirror that scans laser light emitted from the light source, toward a target object by oscillating about axis C; a photodetector that generates a photodetection signal upon receiving the laser light reflected from the target object; a controller that controls emission of the laser light by the light source, and that performs sampling on the photodetection signal; and a detector that detects an amount of displacement of the scanning mirror, and calculates a resonant frequency of the scanning mirror based on the amount of displacement detected. The controller determines a time at which the laser light is emitted from the light source and a time at which sampling is performed on the photodetection signal, based on the resonant frequency calculated.

公开(公告)号：US20180180471A1

公开(公告)日：2018-06-28

申请号：US15843492

申请日：2017-12-15

Applicant: SICK AG

Inventor： Martin MARRA ,  Stefan SEITZ

IPC: G01J1/44 ,  G01J1/42 ,  G01S7/486 ,  G06K7/14

CPC classification number: G01J1/44 ,  G01J1/0252 ,  G01J1/4228 ,  G01J1/46 ,  G01J2001/4406 ,  G01J2001/444 ,  G01J2001/4466 ,  G01J2001/448 ,  G01S7/4863 ,  G01S7/4865 ,  G01S7/497 ,  G01S17/89 ,  G06K7/1408

Abstract: A light receiver (22) comprisinga plurality of avalanche photodiode elements (24), a first terminal (40) and a second terminal (42) for supplying a bias voltage so that the avalanche photodiode elements (24) are biased with a bias voltage above a breakdown voltage and thus operated in a Geiger mode, at least one temperature measuring element (44) for measuring an operating temperature of the avalanche photodiode elements (24) and a voltage compensation unit (46) for adapting the bias voltage to the operating temperature.