公开(公告)号：US20250060460A1

公开(公告)日：2025-02-20

申请号：US18722455

申请日：2022-12-21

Applicant: NATIONAL UNIVERSITY CORPORATION SHIZUOKA UNIVERSITY

Inventor： Shoji KAWAHITO

IPC: G01S7/4863 ,  G01S7/484 ,  G01S7/4865 ,  G01S17/894

Abstract: A distance image sensor includes a light source configured to generate pulsed light, a light source driver configured to control the light source, a pixel circuit including a photoelectric conversion region, charge readout regions, and control electrodes, a pixel driver configured to repeatedly apply control pulses to the control electrodes within a frame period while being delayed from a generation timing of the pulsed light, and a signal readout circuit configured to read out detection signals of charge amounts accumulated in the charge readout region, and the signal readout circuit reads out the detection signals from a group of charge readout regions obtained by dividing the charge readout regions into N (N is an integer equal to or greater than 2) at different readout timings for each group of the charge readout regions divided into N within the frame period.

公开(公告)号：US20250052872A1

公开(公告)日：2025-02-13

申请号：US18718432

申请日：2022-12-08

Applicant: Innoviz Technologies Ltd.

Inventor： Yuval Yifat ,  Idan Bakish ,  Dvir MUNK ,  Ronen Eshel ,  Yuval STERN ,  Oren Navon

IPC: G01S7/497 ,  G01S7/481 ,  G01S7/4865 ,  G01S17/894

Abstract: There is provided a LIDAR system and method for surveying a Field of View (FOV) comprising: an illumination system, a light-sensitive detector, a scanning unit and at least one processing unit, wherein the illumination system is configured to project a first light with first illumination parameters, deflected by the scanning system through a window toward the field of view of the LIDAR system; and the light-sensitive detector is configured to receive light reflected from objects in the field of view and deflected by the scanning unit; and the at least one processing unit is configured to analyze detected light and determine information about the objects, and wherein the illumination system is further configured to project a second light with second illumination parameters toward a window vicinity.

公开(公告)号：US20250052871A1

公开(公告)日：2025-02-13

申请号：US18771766

申请日：2024-07-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： YUUTA OOSHIMA

IPC: G01S7/4863 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/931

Abstract: A ranging device includes: a time counting unit configured to output a time count value indicating an elapsed time from a start of time counting; a light receiving unit including a plurality of pixels and configured to output a light reception count value of incident light to each of the plurality of pixels; and a pixel information generation unit configured to output pixel information in which the light reception count value and the time count value are associated with each other for each pixel. The pixel information generation unit acquires the light reception count value of each of the plurality of pixels and outputs the pixel information of each of the plurality of pixels within a period of time equal to or less than a time in which the time count value changes by a predetermined value.

公开(公告)号：US20250047826A1

公开(公告)日：2025-02-06

申请号：US18803207

申请日：2024-08-13

Applicant: nLIGHT, Inc.

Inventor： Paul S. Banks

IPC: H04N13/254 ,  G01S7/481 ,  G01S7/484 ,  G01S7/486 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/89 ,  G01S17/894 ,  H04N13/204 ,  H04N13/207 ,  H04N13/296

Abstract: Systems and methods for three-dimensional imaging include a light source to emit a light pulse. The divergence of the light pulse is configurable by the system. For example, the system also includes a receiving lens having a field of view and configured to receive a portion of the light pulse reflected or scattered by a scene. The system configures the light source so that the divergence of the light pulse matches or approximates the field of view of the receiving lens.

公开(公告)号：US20250044422A1

公开(公告)日：2025-02-06

申请号：US18362218

申请日：2023-07-31

Applicant: Allegro MicroSystems, LLC

Inventor： Andrew S. Huntington ,  Adam Lee ,  Michael James Munroe ,  Ronald Talaga

IPC: G01S7/4863 ,  G01S7/481 ,  G01S7/486 ,  G01S7/4865

Abstract: Split-detector lidar photoreceivers are described which utilize range-dependent focus to transition from illuminating two detector elements with returns from near targets, within a close-range threshold distance, to illuminating just one detector element for all other returns. In some examples, a split-detector can have or include a “bullseye” (concentric) detector configuration. Because two separate detector elements with separate amplifier chains are used, one channel can be optimized for the strong to and near-target returns, while another channel can be optimized and used for all other returns.

公开(公告)号：US20250035790A1

公开(公告)日：2025-01-30

申请号：US18913160

申请日：2024-10-11

Applicant: TOPPAN HOLDINGS INC.

Inventor： Kunihiro HATAKEYAMA ,  Tomohiro NAKAGOME ,  Hiromitsu HARIU ,  Takahiro AKUTSU ,  Masanori NAGASE

IPC: G01S17/894 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/18

Abstract: A range imaging apparatus includes a light source unit; a light receiving unit including a pixel having a photoelectric conversion device and charge storages, and a pixel driver circuit that distributes and stores the charge into the charge storages; and a range image processing unit that calculates a distance to a subject in the measurement space are included. Subframes are provided per frame, and the range image processing unit stores the charge by controlling the storage timing such that the storage timing relative to the emission timing is relatively different in each of the subframes, and selects a subframe for calculating the distance from the subframes based on the amounts of charge stored per unit integration count in each of the subframes.

公开(公告)号：US12210125B2

公开(公告)日：2025-01-28

申请号：US17136620

申请日：2020-12-29

Applicant: SAMSUNG ELECTRONICS CO., LTD. ,  RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY

Inventor： Jungwoo Kim ,  Hyeongseok Seo ,  Jaehyuk Choi

IPC: G01S7/48 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/89

Abstract: A light detection and ranging (LiDAR) device may sequentially select each of a plurality of memory cells based on a coarse clock synchronized with a start signal generated when light is transmitted, may supply power to a plurality of memory cells based on a stop signal generated when light is received, and may calculate a time of flight (ToF) of light based on information of the power accumulated in the plurality of memory cells.

公开(公告)号：US20250028032A1

公开(公告)日：2025-01-23

申请号：US18716660

申请日：2022-12-02

Applicant: HOKUYO AUTOMATIC CO., LTD.

Inventor： Kunihiro YASUDA

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

Abstract: A histogram generating circuit generates a histogram based on respective flight information that is a time of flight or a flight distance from an emission time point of measurement light repeatedly emitted at predetermined periods to a detection time point of reflected light for respective measurement light, the histogram showing a cumulative frequency of the flight information distributed in a preset measurement range, the histogram generating circuit including: a memory circuit configured to store the histogram; and a memory processing circuit configured to associate a bin number for identifying each bin obtained by splitting the measurement range into a plurality of divisions individually in order based on the flight information with the flight information contained in each bin and the cumulative frequency, and store them in the memory circuit, thereby effectively using a limited memory area.

公开(公告)号：US12204024B2

公开(公告)日：2025-01-21

申请号：US16979483

申请日：2019-03-06

Applicant: Sony Semiconductor Solutions Corporation

Inventor： Yasuhiro Shinozuka ,  Hayato Kamizuru

IPC: G01S7/4863 ,  G01S7/4865 ,  G01S17/10 ,  G01S17/89 ,  H01L31/02 ,  G01S17/931

Abstract: A light receiving device of the present disclosure includes: a pixel array unit having a plurality of pixels 501 to 504 each including a light receiving unit 501 to 504 that generates a signal according to reception of photons; a first switch unit that 611 to 614 recharges the light receiving unit 501 to 504; and a recharge control unit 64 that controls the first switch unit 611 to 614 according to output of the light receiving unit 501 to 504, and the recharge control unit 64 is shared among the plurality of pixels 501 to 504. By this sharing of the recharge control unit 64, since the circuit area of the circuit unit 60 per pixel can be reduced, the aperture ratio can be increased while miniaturizing the pixel 50. Preferably, the recharge control unit 64 includes a four-input OR circuit 641 and a recharge signal generation circuit 642. The OR circuit 641 obtains the OR of the logic signals retrieved from each cathode electrode of the SPAD sensors 501 to 504 supplied through the comparators 631 to 634. The OR output of the OR circuit 641 is supplied to the recharge signal generation circuit 642. The recharge signal generation circuit 642 generates the recharge signal RCHG by delaying the OR output of the OR circuit 641 by a predetermined delay time, and supplies the recharge signal RCHG to the first switch units 611 to 614. As a result, the recharge control unit 64 performs the recharge control in response to the OR signal of the logic signal whose logic is inverted at the time when photons are incident on one or more of the SPAD sensors 501 to 504. Furthermore, a distance measuring device of the present disclosure includes: a light source that irradiates an object to be measured with light; and a light receiving device that receives light reflected by the object to be measured, and the light receiving device includes the light receiving device having the above configuration.

公开(公告)号：US20250012903A1

公开(公告)日：2025-01-09

申请号：US18890510

申请日：2024-09-19

Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

Inventor： Ivan KOUDAR ,  Dariusz Piotr PALUBIAK ,  Steven John BUCKLEY ,  Salvatore GNECCHI

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

Abstract: An imaging system may include a silicon photomultiplier with single-photon avalanche diodes (SPADs). The imaging system may be a LIDAR imaging system with LIDAR processing circuitry. To reduce memory requirements in the LIDAR processing circuitry, a dynamic resolution storage scheme may be used. The LIDAR processing circuitry may include autonomous dynamic resolution circuitry that receives input from a time-to-digital converter (TDC). The autonomous dynamic resolution circuitry may include a plurality of memory banks having different resolutions. Based on the magnitude of the input from the TDC, an appropriate memory bank may be selected. In parallel, an address encoder may select a memory bin based on the input from the TDC.