公开(公告)号：US20230392982A1

公开(公告)日：2023-12-07

申请号：US18034050

申请日：2020-11-30

Applicant: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES

Inventor： Jing LI ,  Huijuan MA ,  Minxia DING ,  Zhipeng WU ,  Dan WANG

IPC: G01J1/44 ,  G01J1/02

CPC classification number: G01J1/44 ,  G01J1/0252 ,  G01J1/0219 ,  G01J2001/448 ,  G01J2001/444

Abstract: A photoelectric detection device, including: a vacuum sealed housing, wherein the vacuum sealed housing includes a mounting interface for mounting the photodetector array so as to form a sealed space; the photodetector array has a detection surface facing an outside of the vacuum sealed housing and configured to receive multi-channel measurement optical signals; a photoelectric conversion and synchronous acquisition circuit and a high speed transmission circuit board are placed in the vacuum sealed housing, and the photodetector array is connected to the photoelectric conversion and synchronous acquisition circuit through a signal pin of the photodetector array; the photoelectric conversion and synchronous acquisition circuit is configured to synchronously convert the multi-channel measurement optical signals obtained by the photodetector array into multi-channel digital signals; and the high speed transmission circuit board is configured to perform a serial encoding processing on the converted multi-channel digital signals.

公开(公告)号：US20230343879A1

公开(公告)日：2023-10-26

申请号：US18347450

申请日：2023-07-05

Applicant: CANON KABUSHIKI KAISHA

Inventor： YASUHARU OTA ,  KAZUHIRO MORIMOTO

IPC: H01L31/02 ,  H01L31/107 ,  G01J1/44

CPC classification number: H01L31/02027 ,  H01L31/107 ,  G01J1/44 ,  G01J2001/4466 ,  G01J2001/4406 ,  G01J2001/444 ,  G01J2001/442 ,  G01J2001/448

Abstract: A photoelectric conversion apparatus includes an avalanche photodiode including an anode and a cathode, a switch that is connected to one node of the anode and the cathode, and a power line to which a drive voltage is to be applied, and configured to switch a resistance value between the one node and the power line, and a signal generation unit configured to generate a pulse signal for controlling switching of the switch, wherein a value obtained by dividing the number of the pulse signals in a first exposure period by the first exposure period, and a value obtained by dividing the number of the pulse signals in a second exposure period having a length different from a length of the first exposure period, by the second exposure period are different.

公开(公告)号：US11781963B2

公开(公告)日：2023-10-10

申请号：US17955069

申请日：2022-09-28

Applicant: BECTON, DICKINSON AND COMPANY

Inventor： Fedor Ilkov ,  Shreyas Bhaban

IPC: G01N15/10 ,  G01J1/44

CPC classification number: G01N15/1012 ,  G01J2001/444 ,  G01N2015/1006

Abstract: Aspects of the present disclosure include methods for determining a parameter of a photodetector (e.g., a photodetector in a particle analyzer). Methods according to certain embodiments include irradiating a photodetector positioned in a particle analyzer with a light source (e.g., a continuous wave light source) at a first intensity for a first predetermined time interval, irradiating the photodetector with the light source at a second intensity for a second predetermined time interval, integrating data signals from the photodetector over a period of time that includes the first predetermined interval and the second predetermined interval and determining one or more parameters of the photodetector based on the integrated data signals. Systems (e.g., particle analyzers) having light source and a photodetector for practicing the subject methods are also described. Non-transitory computer readable storage medium having instructions stored thereon for determining a parameter of a photodetector according to the subject methods are also provided.

公开(公告)号：US11781907B2

公开(公告)日：2023-10-10

申请号：US17340181

申请日：2021-06-07

Applicant: Fitbit, Inc.

Inventor： Sebastian Joseph Capella ,  Shelten Gee Jao Yuen ,  Subramaniam Venkatraman ,  Félix Antoine Turgeon ,  Heiko Gernot Albert Panther

IPC: G01J1/42 ,  A61B5/1455 ,  G09G5/10 ,  A61B5/00 ,  G01J1/32 ,  G01J1/18 ,  G01J1/44 ,  G01J1/46 ,  G01J1/02 ,  G01J1/04 ,  G06V10/141 ,  A61B5/024 ,  A61B5/021 ,  A61B5/145 ,  A61B5/0533 ,  A61B5/01 ,  G06V40/10

CPC classification number: G01J1/4204 ,  A61B5/1455 ,  A61B5/681 ,  A61B5/742 ,  G01J1/0204 ,  G01J1/0219 ,  G01J1/0271 ,  G01J1/0407 ,  G01J1/18 ,  G01J1/32 ,  G01J1/44 ,  G01J1/46 ,  G06V10/141 ,  G09G5/10 ,  A61B5/01 ,  A61B5/021 ,  A61B5/024 ,  A61B5/02405 ,  A61B5/0533 ,  A61B5/14532 ,  A61B5/489 ,  G01J2001/0257 ,  G01J2001/182 ,  G01J2001/444 ,  G01J2001/4406 ,  G06V40/15 ,  G09G2320/0626 ,  G09G2354/00 ,  G09G2360/144 ,  G09G2380/08

Abstract: A wearable computing device includes an electronic display with a configurable brightness level setting, a physiological metric sensor system including a light source configured to direct light into tissue of a user wearing the wearable computing device and a light detector configured to detect light from the light source that reflects back from the user. The device may further include control circuitry configured to activate the light source during a first period, generate a first light detector signal indicating a first amount of light detected by the light detector during the first period, deactivate the light source during a second period, generate a second light detector signal indicating a second amount of light detected by the light detector during the second period, generate a physiological metric based at least in part on the first light detector signal and the second light detector signal, and modify the configurable brightness level setting based on the second light detector signal.

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：US11698296B2

公开(公告)日：2023-07-11

申请号：US17024202

申请日：2020-09-17

Applicant: STMicroelectronics (Crolles 2) SAS ,  STMicroelectronics SA

Inventor： Stephane Monfray ,  Olivier Le Neel ,  Frederic Boeuf

IPC: G01J1/04 ,  H01L31/0232 ,  G01J1/44 ,  G02B5/18 ,  H01L31/101

CPC classification number: G01J1/0411 ,  G01J1/44 ,  G02B5/1828 ,  G02B5/1857 ,  H01L31/02327 ,  H01L31/1013 ,  G01J2001/444

Abstract: A light sensor includes a semiconductor substrate supporting a number of pixels. Each pixel includes a photoconversion zone extending in the substrate between a front face and a back face of the substrate. An optical diffraction grating is arranged over the back face of the substrate at a position facing the photoconversion zone of the pixel. For at least two different pixels of the light sensor, the optical diffraction gratings have different pitches. Additionally, the optical grating of each pixel is surrounded by an opaque wall configured to absorb at operating wavelengths of the sensor.

公开(公告)号：US09989406B2

公开(公告)日：2018-06-05

申请号：US15419053

申请日：2017-01-30

Applicant: Ouster, Inc.

Inventor： Angus Pacala ,  Mark Frichtl

IPC: G01C3/00 ,  G01J1/02 ,  G01J1/44 ,  G01J1/08

CPC classification number: G01J1/0295 ,  G01B11/026 ,  G01B11/24 ,  G01J1/0252 ,  G01J1/08 ,  G01J1/44 ,  G01J2001/086 ,  G01J2001/442 ,  G01J2001/444 ,  G01S7/481 ,  G01S7/4815 ,  G01S7/497 ,  G01S17/42 ,  G01S17/89 ,  H01L27/146

Abstract: A calibration system is provided including an aperture layer, a lens layer, an optical filter, a pixel layer and a regulator. The aperture layer defines a calibration aperture. The lens layer includes a calibration lens substantially axially aligned with the calibration aperture. The optical filter is adjacent the lens layer opposite the aperture layer. The pixel layer is adjacent the optical filter opposite the lens layer and includes a calibration pixel substantially axially aligned with the calibration lens. The calibration pixel detects light power of an illumination source that outputs a band of wavelengths of light as a function of a parameter. The regulator modifies the parameter of the illumination source based on a light power detected by the calibration pixel.

公开(公告)号：US20180145645A1

公开(公告)日：2018-05-24

申请号：US15861109

申请日：2018-01-03

Applicant: Renesas Electronics Corporation

Inventor： Hitoshi IMAI

IPC: H03F3/08 ,  H04B15/00 ,  H04B10/80 ,  G01J1/44

CPC classification number: H03F3/085 ,  G01J2001/444 ,  H04B10/802 ,  H04B15/005

Abstract: A light-emitting unit outputs an optical signal corresponding to an input electric signal. A light-receiving unit is electrically insulated from the light-emitting unit and outputs an electric signal according to the received optical signal as an output signal. In the light-receiving unit, a first light-receiving device outputs an optical current according to the optical signal. A second light-receiving device is provided not to receive the optical signal. A current duplication circuit duplicates a current flowing through the second light-receiving device. A current-voltage conversion circuit converts a current, which is generated by subtracting the current duplicated by the current duplication circuit from a current flowing through the first light-receiving device, into a voltage signal. A comparator output a result of a comparison between the voltage signal converted by the current-voltage conversion circuit and a threshold voltage as the output signal.

公开(公告)号：US09978885B1

公开(公告)日：2018-05-22

申请号：US15227500

申请日：2016-08-03

Applicant: Evgeny N. Kuznetsov

Inventor： Evgeny N. Kuznetsov

IPC: G01T1/24 ,  H01L31/02 ,  H01L27/146 ,  G01J1/44

CPC classification number: H01L31/02027 ,  G01J1/44 ,  G01J2001/444 ,  G01J2001/4466 ,  G01J2001/448 ,  H01L27/14634 ,  H01L27/14643

Abstract: A silicon photomultiplier (SiPM) device is provided with a SiPM matrix fabricated on a substrate, a bias power supply connected to the SiPM matrix, and a compensation circuit coupled to the bias power supply. The bias power supply provides a bias voltage to the SiPM matrix. The compensation circuit can adjust the bias voltage applied to the SiPM matrix in response to temperature changes at the substrate. The compensation circuit includes a resistor fabricated on the substrate with the SiPM matrix. The resistor can have a resistance that varies in response to temperature changes at the substrate.

公开(公告)号：US20180098009A1

公开(公告)日：2018-04-05

申请号：US15814895

申请日：2017-11-16

Applicant: FUJIFILM Corporation

Inventor： Yoshinori Furuta

IPC: H04N5/365 ,  G01J1/44 ,  G01J1/42 ,  G01J1/04 ,  H04N5/33 ,  H04N5/232

CPC classification number: H04N5/365 ,  G01J1/0411 ,  G01J1/12 ,  G01J1/42 ,  G01J1/4228 ,  G01J1/44 ,  G01J2001/444 ,  G01J2005/0048 ,  G01J2005/0077 ,  G01J2005/068 ,  H04N5/23212 ,  H04N5/33 ,  H04N5/3651 ,  H04N5/3656

Abstract: A signal component amount calculation unit calculates dispersion or standard deviation of multiple times of infrared detection signals detected by each detector element to be processed, and calculates the amount of a signal component dependent on infrared rays incident on the infrared detector included in the infrared detection signals, on the basis of the calculated dispersion or standard deviation. A fixed pattern noise calculation unit calculates the amount of a fixed pattern noise component on the basis of the infrared detection signals and the calculated amount of a signal component. A data update unit updates the fixed pattern noise data with the calculated amount of a fixed pattern noise component.