公开(公告)号：US11982566B2

公开(公告)日：2024-05-14

申请号：US17442145

申请日：2020-02-28

Applicant: ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL) ,  Yeda Research & Development Co. Ltd.

Inventor： Ivan Michel Antolovic ,  Claudio Bruschini ,  Edoardo Charbon ,  Gur Lubin ,  Ron Tenne ,  Dan Oron ,  Uri Rossman

IPC: G01J1/44 ,  G01J1/42

CPC classification number: G01J1/44 ,  G01J1/4228 ,  G01J2001/442 ,  G01J2001/444 ,  G01J2001/4466

Abstract: A system for photon correlation of an illuminated object and/or a light source is provided. The system includes a light source for illuminating the object and an optical system having an object-facing side configured to face the object or the light source and a projection side with the projection side having a focal plane. The system also includes a single-chip single photon avalanche photodiode (SPAD) array arranged at the focal plane and a timing circuit associated with the single-chip SPAD array for measuring arrival times of photons detected by the single-chip SPAD array.

公开(公告)号：US20240125646A1

公开(公告)日：2024-04-18

申请号：US17966502

申请日：2022-10-14

Applicant: HERMES-EPITEK CORPORATION

Inventor： Shang-Jr Gwo ,  Ching-Wen Chang

IPC: G01J1/44 ,  G01J1/04

CPC classification number: G01J1/44 ,  G01J1/0425 ,  G01J2001/442

Abstract: The invention provides a single-photon detector that includes a superconducting wire made from a high quality and uniform superconducting film with a higher critical temperature. A reflector or a multilayered reflector with high reflectivity, preferably a nitride-based distributed Bragg reflector, is provided to reflect an incident light to the superconducting wire. A surface-plasmon wavelength-selective surface may be further provided above the superconducting wire to resonantly transmits the incident light within a selective passband, making the single-photon detector operable in the ultraviolet, visible, and infrared wavelength bands. In addition, a large area of superconducting film with high level of uniformity is grown to achieve the up scaling of the single-photon detector and a single-photon detector array.

公开(公告)号：US20240073550A1

公开(公告)日：2024-02-29

申请号：US18552684

申请日：2022-04-06

Applicant: ams International AG

Inventor： Charalambos ANDREOU ,  Fridolin MICHEL

IPC: H04N25/30 ,  G01T1/24 ,  G01T1/36 ,  H04N25/709

CPC classification number: H04N25/30 ,  G01T1/247 ,  G01T1/366 ,  H04N25/709 ,  G01J2001/442

Abstract: A front-end electronic circuitry for an electromagnetic radiation sensor application comprises a charge sensitive amplifier stage with a first single-input operational transconductance amplifier, and a transistor being arranged in a first feedback path of the first single-input operational transconductance amplifier, and a signal shaper stage with a second single-input operational transconductance amplifier, and an active feedback circuit being arranged in a second feedback path of the second single-input operational transconductance amplifier. The front-end electronic circuitry further comprises a control circuit having a second transistor. The control circuit is configured to provide a control signal to control the transistor of the first feedback path in dependence on a gate-source voltage of the second transistor.

公开(公告)号：US11877825B2

公开(公告)日：2024-01-23

申请号：US17202548

申请日：2021-03-16

Applicant: HI LLC

Inventor： Benjamin Siepser ,  Sangyong Park ,  Sebastian Sorgenfrei ,  Jacob Dahle ,  Ryan Field ,  Alex Borisevich ,  Milin J. Patel

IPC: A61B5/00 ,  G01J1/42 ,  G01J1/44

CPC classification number: A61B5/0075 ,  G01J1/4228 ,  G01J1/44 ,  A61B5/0042 ,  A61B2562/0238 ,  G01J2001/442 ,  G01J2001/448 ,  G01J2001/4466

Abstract: An exemplary system includes a processor, a wearable device comprising a plurality of slots, and a first module including a plurality of detectors and a module control circuit. The processor is configured to successively transmit, to each slot of the plurality of slots, a command to enable a respective module located in each slot. The processor is further configured to determine, based on an acknowledgment received from the module control circuit, that the first module is enabled and located in a first slot, and to successively transmit, based on the determining that the first module is enabled and located in the first slot, a plurality of detector address identifiers. The module control circuit is configured to successively place the plurality of detectors into an enumeration mode in which each detector of the plurality of detectors is assigned a different detector address identifier of the plurality of detector address identifiers.

公开(公告)号：US11860032B2

公开(公告)日：2024-01-02

申请号：US17384915

申请日：2021-07-26

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Takuya Fujita ,  Yusei Tamura ,  Kenji Makino ,  Takashi Baba ,  Koei Yamamoto

IPC: H01L31/02 ,  G01J1/44 ,  H01L27/144 ,  H01L31/107

CPC classification number: G01J1/44 ,  H01L27/1446 ,  H01L31/02027 ,  H01L31/107 ,  G01J2001/442 ,  G01J2001/4466

Abstract: A photodetector device includes an avalanche photodiode array substrate formed from compound semiconductor. A plurality of avalanche photodiodes arranged to operate in a Geiger mode are two-dimensionally arranged on the avalanche photodiode array substrate. A circuit substrate includes a plurality of output units which are connected to each other in parallel to form at least one channel. Each of the output units includes a passive quenching element and a capacitative element. The passive quenching element is connected in series to at least one of the plurality of avalanche photodiodes. The capacitative element is connected in series to at least one of the avalanche photodiodes and is connected in parallel to the passive quenching element.

公开(公告)号：US11815394B2

公开(公告)日：2023-11-14

申请号：US17501808

申请日：2021-10-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Aihiko Numata

IPC: G01J1/44 ,  H04N25/702 ,  H04N25/771

CPC classification number: G01J1/44 ,  H04N25/702 ,  H04N25/771 ,  G01J2001/442 ,  G01J2001/4466

Abstract: A photoelectric conversion device including a pixel configured to output a signal in response to incidence of a photon includes a first measurement unit configured to measure the signal output from the pixel, a second measurement unit configured to measure time until the signal measured by the first measurement unit reaches a first threshold, a first storage unit configured to store, as a first time, a result of the measurement by the second measurement unit at a first time point, a comparison unit configured to compare the first time stored in the first storage unit and a second time measured by the second measurement unit at a second time point later than the first time point, and an output unit configured to output a signal corresponding to a result of the comparison by the comparison unit.

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：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：US20230221420A1

公开(公告)日：2023-07-13

申请号：US18093210

申请日：2023-01-04

Applicant: STMicroelectronics (Alps) SAS

Inventor： Xavier BRANCA

IPC: G01S7/4865 ,  G01J1/44 ,  H02M3/155 ,  G01J1/02

CPC classification number: G01S7/4865 ,  G01J1/44 ,  H02M3/1552 ,  G01J1/0219 ,  G01J2001/442 ,  G01J2001/4466

Abstract: A light sensor includes an integrated circuit chip and a boost DC/DC converter. The integrated circuit chip supports an array of pixels, each pixel including a SPAD. The boost DC/DC converter delivers to the SPADs a bias potential capable of placing the SPADs in Geiger mode. The boost DC/DC converter includes an inductive element, a first switch, a second switch, and a circuit for controlling on/off switching of the first switch. The inductive element and the first and second switches are arranged outside of the integrated circuit chip while the control circuit forms part of the integrated circuit chip.

公开(公告)号：US11684273B2

公开(公告)日：2023-06-27

申请号：US15976658

申请日：2018-05-10

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Massimo Cataldo Mazzillo ,  Piero Fallica ,  Sebania Libertino

IPC: A61B5/021 ,  G02F1/21 ,  A61B5/024 ,  A61B5/00 ,  G01J3/26 ,  G01J3/12 ,  G01J1/44

CPC classification number: A61B5/02125 ,  A61B5/02141 ,  A61B5/02433 ,  A61B5/742 ,  G01J3/26 ,  G02F1/21 ,  A61B2562/0238 ,  G01J2001/442 ,  G01J2001/4466 ,  G01J2003/1226 ,  G02F1/213 ,  G02F2203/055 ,  G02F2203/11

Abstract: In various embodiments, the present disclosure provides devices and systems for detecting the blood pressure of a user. In one embodiment, an optoelectronic device includes an array of avalanche photodiodes operating in Geiger mode. A tunable optical filter is optically coupled to the array and receives a light beam reflected from a vascularized tissue of the user, in response to the vascularized tissue being illuminated by an optical source.