公开(公告)号：US20220397650A1

公开(公告)日：2022-12-15

申请号：US17678986

申请日：2022-02-23

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO

IPC: G01S7/4863

Abstract: A light detector according to one embodiment includes pixels, selection circuits, and an output circuit. The pixels each includes an avalanche photodiode. The selection circuits are respectively coupled to the pixels. The selection circuits are configured to output a signal output from a pixel selected from the pixels to a first node. The output circuit is coupled to the first node. The output circuit is configured to apply a first operating voltage to the avalanche photodiode included in the selected pixel via a selection circuit of the selection circuits that is coupled to the selected pixel, output an current based on the signal output from the selected pixel to a second node, and change the first operating voltage.

公开(公告)号：US20210293957A1

公开(公告)日：2021-09-23

申请号：US17016991

申请日：2020-09-10

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO

IPC: G01S17/10 ,  G01S7/481

Abstract: A light detector according to an embodiment includes a light receiver and a controller. The light receiver includes sensors and pixels. The sensors are arranged two-dimensionally on a substrate. The controller is configured to set a light-receiving region in which the sensors are selectively turned on in the light receiver. The controller sets first and second light-receiving regions. The first and second light-receiving regions include first and second pixel, respectively. The second light-receiving region is arranged away from an optical axis of laser light received by the light receiver. The controller, after turning on each of the first pixel and the second pixel, is further configured to turn off the second pixel in a state in which the first pixel is turned on.

公开(公告)号：US20200292670A1

公开(公告)日：2020-09-17

申请号：US16551283

申请日：2019-08-26

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

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO

IPC: G01S7/481 ,  G01S7/486 ,  G01S17/10 ,  H01L31/107 ,  H01L31/02 ,  H01L27/144 ,  H01L31/0216

Abstract: According to one embodiment, a sensor includes a first avalanche photodiode, a first quenching element, a second avalanche photodiode, and a second quenching element. The first quenching element is connected to a current output terminal of the first avalanche photodiode at one end and is connected to an output terminal at another end. The second avalanche photodiode is arranged adjacent to the first avalanche photodiode. The second quenching element is connected to a current output terminal of the second avalanche photodiode at one end and is connected to a specific electric potential at another end.

公开(公告)号：US20190086541A1

公开(公告)日：2019-03-21

申请号：US15911312

申请日：2018-03-05

Applicant: Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO ,  Saki SATO ,  Tomonori FUKUSHIMA

IPC: G01S17/10 ,  G01S7/484 ,  G01S7/486 ,  G01S7/487

Abstract: According to one embodiment, a distance measurement apparatus includes a light emitter that intermittently emits a light beam, and a meter that measures a distance to an object from a length of time from an emission of the light beam from the light emitter to a return of reflected light by the object. The light emitter emits the light beam in a certain cycle with delay corresponding to randomly set offset time. The meter generates an integrated detection signal by shifting a plurality of detection signals of the light beam emitted in the certain cycle by the respective offset times and time-divisionally integrating the detection signals, and determines based on the integrated detection signal whether or not the light indicated by the detection signals is reflected light by the object, emitted from the light emitter.

公开(公告)号：US20240045036A1

公开(公告)日：2024-02-08

申请号：US18170361

申请日：2023-02-16

Applicant: Kabushiki Kaisha Toshiba

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO ,  Katsuyuki KIMURA

IPC: G01S7/4861 ,  G01S17/10 ,  G01S7/481 ,  G01S7/4865

CPC classification number: G01S7/4861 ,  G01S17/10 ,  G01S7/4811 ,  G01S7/4865 ,  G01S17/89

Abstract: A signal processing device according to an embodiment includes input ends, first to Nth output ends, and a control circuit. The input ends respectively input signals. The first to Nth output ends are respectively associated with first to Nth groups (N is an integer of not less than two). Each of the first to Nth groups includes M (M is an integer of not less than two) consecutive input ends. The control circuit output, to the kth output end, a signal based on a signal obtained by adding signals respectively input to the M consecutive input ends of the kth group (k an integer of not less than 1 and not more than N). The control circuit switches combinations of input ends as the M input ends to set different combinations at the first setting to the Mth setting.

公开(公告)号：US20230288543A1

公开(公告)日：2023-09-14

申请号：US17900069

申请日：2022-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO ,  Katsuyuki KIMURA

IPC: G01S7/4863 ,  G01S17/931 ,  G01S7/4865 ,  H01L31/02

CPC classification number: G01S7/4863 ,  G01S17/931 ,  G01S7/4865 ,  H01L31/02027

Abstract: According to the present embodiment, a light receiving device includes a plurality of pixels. Each of the pixels includes a photoelectric conversion element configured to be able to detect incidence of a photon and a power supply portion configured to change an applied voltage applied across both ends of the photoelectric conversion element.

公开(公告)号：US20230243969A1

公开(公告)日：2023-08-03

申请号：US18297875

申请日：2023-04-10

Applicant: Kabushiki Kaisha Toshiba ,  Toshiba Electronic Devices & Storage Corporation

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO

IPC: G01S17/10

CPC classification number: G01S17/10 ,  G01C3/08

Abstract: A sensor includes an avalanche photodiode (APD), a first resistor, a second resistor, and a rectification element. The first resistor is connected between a current output terminal of the APD and a first output terminal. The second resistor and the rectification element are connected in series between the current output terminal and a second output terminal. The rectification element is connected between the second resistor and the second output terminal.

公开(公告)号：US20220091261A1

公开(公告)日：2022-03-24

申请号：US17200504

申请日：2021-03-12

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO

IPC: G01S17/10 ,  G01S17/89 ,  G01S7/487 ,  G01S7/4863

Abstract: A distance measuring device according to one embodiment includes a light emitter, a first light receiver, and a second light receiver. The light emitter includes a light source. The light source emits an optical signal. The first light receiver includes a first sensor and a first optical system. The first sensor includes first pixels. The first optical system is configured to guide a reflected light of the optical signal emitted from the light emitter to the first sensor. The second light receiver includes a second sensor and a second optical system. The second sensor includes second pixels. The second optical system is configured to guide the reflected light to the second sensor.

公开(公告)号：US20220082668A1

公开(公告)日：2022-03-17

申请号：US17187313

申请日：2021-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA ,  TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION

Inventor： Hiroshi KUBOTA ,  Nobu MATSUMOTO ,  Masanori KATO ,  Mitsuhiro SENGOKU

IPC: G01S7/4863 ,  G01S17/26

Abstract: A light detector includes an array of single-photon avalanche photodiodes (SPADs). Each of the SPADs includes an avalanche photodiode (APD), a first resistor connected in series with the APD, a second resistor connected to a node between the APD and the first resistor, a rectifying element connected in series with the second resistor between the second resistor and a constant power source, and a high-frequency current reduction circuit connected in series with the rectifying element between the rectifying element and the constant power source. The high frequency current reduction circuit is configured to reduce a high-frequency current flowing toward the constant power source when an avalanche phenomenon occurs in the APD.

公开(公告)号：US20220065998A1

公开(公告)日：2022-03-03

申请号：US17466367

申请日：2021-09-03

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Masatoshi HIRONO ,  Hiroshi KUBOTA ,  Nobu MATSUMOTO

IPC: G01S7/481 ,  G02B26/08 ,  G02B26/10

Abstract: According to one embodiment, a distance measurement device includes a light projecting unit and a light receiving unit. The light projecting unit projects light to a target. The light receiving unit detects the light reflected by the target. The light projecting unit includes a light source emitting light, a first reflecting surface allowing the light to partially pass through the first reflecting surface, and a second reflecting surface facing the first reflecting surface and reflecting the light. The light is reflected a plurality of times by each of the first reflecting surface and the second reflecting surface.