公开(公告)号：US20210239802A1

公开(公告)日：2021-08-05

申请号：US17161441

申请日：2021-01-28

Applicant: DENSO CORPORATION

Inventor： Mitsuhiro Kiyono ,  Teiyuu Kimura ,  Noriyuki Ozaki ,  Kenichi Yanai ,  Shinji Kashiwada ,  Fumiaki Mizuno ,  Kazuhisa Onda

IPC: G01S7/481 ,  G01S7/4861 ,  G01S17/08

Abstract: An optical detector is configured to project a projection beam toward a measurement area and detect a return beam from the measurement area. The optical detector includes: a projecting optical system that forms a projection optical axis to project the projection beam; a receiving optical system that forms a receiving optical axis to receive the return beam, and a housing having a housing chamber to house the projecting optical system and the receiving optical system, and an optical window for the projection beam and the return beam to travel between the housing chamber and the measurement area. The projection optical axis and the receiving optical axis are offset from each other to define an overlap region inside the housing chamber where footprints of the projection beam and the return beam overlap with each other.

公开(公告)号：US12189060B2

公开(公告)日：2025-01-07

申请号：US17138699

申请日：2020-12-30

Applicant: DENSO CORPORATION

Inventor： Hitoshi Yamada ,  Yoshiaki Hoashi ,  Fumiaki Mizuno ,  Noriyuki Ozaki ,  Akifumi Ueno

IPC: G01S7/481 ,  G01S7/484 ,  G02B5/10 ,  G02B26/12 ,  G02B27/30

Abstract: An optical distance measuring device includes a light emitting element in which a plurality of light emitting units 16 that emit light are arranged so that a gap is present between adjacent ones of the light emitting units, a transmission unit through which the light is transmitted, a drive unit that changes a positional relationship between the light emitting element and the transmission unit, and a light receiving unit that receives reflected light of the light. The drive unit changes the positional relationship between the light emitting element and the transmission unit, thereby changing an irradiation path of the light along an arrangement direction.

公开(公告)号：US11585908B2

公开(公告)日：2023-02-21

申请号：US16843191

申请日：2020-04-08

Applicant: DENSO CORPORATION

Inventor： Noriyuki Ozaki ,  Teiyu Kimura ,  Kenta Azuma ,  Takehiro Hata

IPC: G01S17/10 ,  G01S7/4865 ,  G01S7/487 ,  H01L31/107 ,  G01S17/08 ,  G01S7/4863

Abstract: A plurality of photodetectors form a light receiving group, and a plurality of the light receiving groups form one pixel. A light receiving array is provided with one or more of such pixels. The photodetectors each output a pulse signal in response to irradiation of a photon. A measuring unit is provided for each of the plurality of light receiving groups. The measuring unit generates time information representing an elapsed time from an irradiation timing input from outside and light quantity information acquired at each of one or more timings identified from the time information, in accordance with the pulse signal output from the light receiving group. The number of the photodetectors outputting the pulse signal among the plurality of photodetectors belonging to the light receiving group is used as the light quantity information.

公开(公告)号：US20200018832A1

公开(公告)日：2020-01-16

申请号：US16584093

申请日：2019-09-26

Applicant: DENSO CORPORATION

Inventor： Kenta Azuma ,  Noriyuki Ozaki ,  Shinji Kashiwada ,  Teiyu Kimura ,  Isamu Takai ,  Hiroyuki Matsubara ,  Mitsuhiko Ohta ,  Shigeyoshi Hiratsuka

IPC: G01S7/486 ,  G01S17/10 ,  H01L31/107

Abstract: A photodetector includes plural detectors. Each of the plural detectors has a single photon avalanche diode (hereinafter referred to as SPAD) which responds to incidence of a photon. The plural detectors include at least a first detector and a second detector. The SPAD has a recovery time period until the SPAD reaches a next photon-responsive state, in response to the SPAD responding to the incidence of the photon. The recovery time period of the SPAD in the first detector is different from the recovery time period of the SPAD in the second detector.