公开(公告)号：US11808627B2

公开(公告)日：2023-11-07

申请号：US17043774

申请日：2019-03-28

Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  Sorbonne Universite ,  ECOLE NORMALE SUPERIEURE DE PARIS ,  UNIVERSITÉ PARIS CITÉ

Inventor： Kenneth Maussang ,  Sukhdeep Dhillon ,  Jerome Tignon

IPC: G01J1/44 ,  G01J4/04 ,  H01L31/0216 ,  H01L31/0224 ,  H01L31/09 ,  H01L31/0304 ,  G01J4/00 ,  G01J3/42 ,  G01J1/42 ,  G01J3/10 ,  G02F2/02

CPC classification number: G01J1/44 ,  G01J1/42 ,  G01J3/10 ,  G01J3/42 ,  G01J4/00 ,  G01J4/04 ,  H01L31/0216 ,  H01L31/0224 ,  H01L31/0304 ,  H01L31/09 ,  G01J2001/446 ,  G02F2/02 ,  G02F2203/13

Abstract: A photoconductive switch for generating or detecting terahertz radiation (TR) is provided. The photoconductive switch may comprise at least a first and a second pair of electrodes (EV, EH, EGR) on a surface (SS) of a photoconductive substrate, wherein the electrodes of the first pair are separated by a first gap comprising at least a plurality of first rectilinear sections (GV) extending along a first direction (x) and the electrodes of the second pairs are separated by a second gap comprising at least a plurality of second sections (GH) extending along a second direction (y), different from the first direction. The photoconductive switch may further comprise a patterned opaque layer (PML) selectively masking portions of the gaps between the electrodes. Methods and devices for generating and detecting terahertz radiation comprising such photoconductive switches are also provided.

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：US11796386B2

公开(公告)日：2023-10-24

申请号：US17362548

申请日：2021-06-29

Applicant: STMicroelectronics (Research and Development) Limited ,  STMicroelectronics (Grenoble 2) SAS

Inventor： Jeffrey M. Raynor ,  Sophie Taupin ,  Jean-Jacques Rouger ,  Pascal Mellot

IPC: G01J1/42 ,  G01J1/44 ,  H01L23/58 ,  H01L27/144 ,  H01L31/02

CPC classification number: G01J1/4204 ,  G01J1/44 ,  H01L23/585 ,  H01L27/1443 ,  H01L27/1446 ,  H01L31/02019 ,  G01J2001/446 ,  G01J2001/448

Abstract: An optical sensor includes pixels. Each pixel has a photodetector. A readout circuit performs a process over an exposure time where the photodetector is connected to a reverse bias voltage supply to reset a voltage across the photodetector, and the photodetector is disconnected from the reverse bias voltage supply until that the voltage across the photodetector decreases in response to received ambient light. An ambient light level is then determine an based on a number of times the voltage across the photodetector is reset over the exposure time.

公开(公告)号：US11788884B2

公开(公告)日：2023-10-17

申请号：US16996427

申请日：2020-08-18

Applicant: RAYTHEON COMPANY

Inventor： Thomas P. Sprafke

IPC: G01J1/04 ,  H01L27/144 ,  H01L23/00 ,  G01J1/44 ,  G02B5/20

CPC classification number: G01J1/0488 ,  G01J1/0403 ,  G01J1/44 ,  H01L24/13 ,  H01L24/16 ,  H01L24/17 ,  H01L24/81 ,  H01L27/144 ,  G02B5/20 ,  H01L2224/13109 ,  H01L2224/16145 ,  H01L2224/16225 ,  H01L2224/17181 ,  H01L2224/81192 ,  H01L2924/05432 ,  H01L2924/10252 ,  H01L2924/10254 ,  H01L2924/10379

Abstract: An optical sensor and filter assembly is provided and includes an optical sensor, a filter and a mounting structure. The optical sensor includes a detector layer having first and second opposed faces and a read-out integrated circuit (ROIC) to which the first face of the detector layer is hybridized. The filter permits passage of one or more wavelength bands of interest of incident light toward the optical sensor and the mounting structure directly hybridizes the filter to the second face of the detector layer.

公开(公告)号：US20230324219A1

公开(公告)日：2023-10-12

申请号：US17716585

申请日：2022-04-08

Applicant: VIAVI SOLUTIONS INC.

Inventor： Christopher Russell WAGNER

IPC: G01J1/44 ,  H03F3/45 ,  H03M1/12

CPC classification number: G01J1/44 ,  H03F3/45475 ,  H03M1/124 ,  G01J2001/4406 ,  G01J2001/446

Abstract: A system for amplification of optical signals for optical measurement instrumentation is disclosed. The system may include a first logarithmic amplifier circuit in a first amplification path, and a linear amplifier circuit and a second logarithmic amplifier circuit coupled in series in a second amplification path. The first and second amplification paths may receive an input signal from a photodiode and provide amplified signals, in parallel, to a selection circuit, which may select one of the outputs of the first and second amplification paths based on one or two power thresholds. The selection circuit may then provide the selected output to a measurement circuit or device. In some examples, the system may also include a sampling circuit to sample the outputs and an analog-digital conversion circuit to digitize the outputs before selection. The power threshold(s) may be determined based on a saturation level of the linear amplifier circuit.

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：US11774562B2

公开(公告)日：2023-10-03

申请号：US17717606

申请日：2022-04-11

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Electronic Devices & Storage Corporation

Inventor： Hiroshi Kubota ,  Nobu Matsumoto

IPC: G01S7/486 ,  G01S7/4863 ,  G01J1/44 ,  G01S7/487 ,  G01S17/10 ,  H01L31/107

CPC classification number: G01S7/4863 ,  G01J1/44 ,  G01S7/487 ,  G01S17/10 ,  H01L31/107 ,  G01J2001/4466

Abstract: According to one embodiment, a light detector includes: a first set of light detection elements and a second set of light detection elements each being disposed in a first region on a substrate; and a first selection and integration circuit and a second selection and integration circuit each being disposed in a second region outside of the first region on the substrate. The first selection and integration circuit is configured to select a first subset of light detection elements in the first set, and integrate outputs from the light detection elements in the first subset. The second selection and integration circuit is configured to select a second subset of light detection elements in the second set, and integrate outputs from the light detection elements in the second subset.

公开(公告)号：US20230309420A1

公开(公告)日：2023-09-28

申请号：US18315459

申请日：2023-05-10

Applicant: Applied Materials, Inc.

Inventor： Zihao Yang ,  Mingwei Zhu ,  Nag B. Patibandla ,  Nir Yahav ,  Robert Jan Visser ,  Adi de la Zerda

IPC: H10N60/85 ,  G02B6/10 ,  G01J1/44

CPC classification number: H10N60/85 ,  G02B6/107 ,  G01J1/44 ,  G01J2001/442

Abstract: A superconducting nanowire single photon detector (SNSPD) device includes a substrate having a top surface, an optical waveguide on the top surface of the substrate to receive light propagating substantially parallel to the top surface of the substrate, a seed layer of metal nitride on the optical waveguide, and a superconductive wire on the seed layer. The superconductive wire is a metal nitride different from the metal nitride of the seed layer and is optically coupled to the optical waveguide.

公开(公告)号：US11768106B2

公开(公告)日：2023-09-26

申请号：US17850572

申请日：2022-06-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yusuke Yamashita ,  Shigeharu Aoki

IPC: G01J1/44 ,  H04N25/75

CPC classification number: G01J1/44 ,  H04N25/75

Abstract: A device includes a conversion unit, a generation unit configured to generate a pulse signal based on a signal from the conversion unit, a counter circuit configured to count the generated pulse signal, and a time measurement circuit configured to measure a time wherein one of a count value counted by the counter circuit or a time measurement value measured by the time measurement circuit is selectively output.

公开(公告)号：US20230280853A1

公开(公告)日：2023-09-07

申请号：US18146365

申请日：2022-12-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyunjee JEON ,  SANGHYUN LIM

IPC: G06F3/041 ,  G01J1/44 ,  G06F3/044 ,  H10K59/40 ,  H10K59/80

CPC classification number: G06F3/0412 ,  G01J1/44 ,  G06F3/0443 ,  G06F3/0416 ,  G06F3/0446 ,  H10K59/40 ,  H10K59/873 ,  G06F2203/04112 ,  G06F2203/04111

Abstract: An electronic device includes a display panel, an input sensor that is disposed on the display panel and that includes a first sensing electrode and a second sensing electrode that crosses the first sensing electrode, and an optical sensor disposed on the input sensor. The optical sensor includes a photo-electrode disposed on one of the first sensing electrode and the second sensing electrode and a light receiving element that electrically connects one of the first sensing electrode to the second sensing electrode and the photo-electrode.