公开(公告)号：US10656271B2

公开(公告)日：2020-05-19

申请号：US15318706

申请日：2015-11-03

Applicant: DENSO CORPORATION

Inventor： Toshiaki Nagai ,  Kenichi Yanai

IPC: G01C3/08 ,  G01S17/10 ,  G01S7/4865 ,  G01S7/4861 ,  G01S7/486

Abstract: A light emitting element emits a modulated light modulated in a pattern having a repetitive period toward a space. A driving unit drives the light emitting element. A light receiving element distributes charges corresponding to an incident light containing a reflected light obtained by reflecting the modulated light on an object to storage capacitors and stores the distributed charges. A control unit controls an exposure of the light receiving element. A signal processing unit measures a distance to the object by using a value sampled by the light receiving element. The control unit controls the exposure of the light receiving element to give a sensitivity to at least one high-order harmonic. The signal processing unit linearly combines a component of a fundamental wave with a component of the at least one high-order harmonic to measure the distance to the object.

公开(公告)号：US12270945B2

公开(公告)日：2025-04-08

申请号：US17344417

申请日：2021-06-10

Applicant: DENSO CORPORATION

Inventor： Teiyu Kimura ,  Kenichi Yanai ,  Shinji Kashiwada ,  Yoshihide Tachino

IPC: G01S7/481 ,  G01S7/484

Abstract: An optical ranging device includes a light emitting section provided with a semiconductor laser element having a light emitting region whose length in a first direction is more than that in a second direction intersecting the first direction. The device measures the distance to an object based on the time from light emission from the light emitting section to reception of the light by a light receiving section. A plurality of light emitting regions may be provided in the light emitting section such that they are separated in the second direction and abut or partially overlap each other in the first direction so that the light emitting regions are continuous in the first direction.

公开(公告)号：US20210240066A1

公开(公告)日：2021-08-05

申请号：US17161434

申请日：2021-01-28

Applicant: DENSO CORPORATION

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

IPC: G03B21/28 ,  G01S7/48 ,  G01S7/481 ,  G02B26/10 ,  G01S17/06

Abstract: An optical detector includes a light emitter having a light emitting window extended in an extension direction to emit a projection beam from the light emitting window toward a measurement area and to detect a return beam from the measurement area. The optical detector includes a scanning mirror that scans by reflecting the projection beam. The scanning mirror swings within a finite angular range around a rotation axis that is along a direction corresponding to the extension direction.

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.