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    Optical distance measuring device
    1.
    发明授权
    Optical distance measuring device 有权

    公开(公告)号：US12189057B2

    公开(公告)日：2025-01-07

    申请号：US18471185

    申请日：2023-09-20

    Applicant: DENSO CORPORATION

    Inventor： Noriyuki Ozaki ,  Mitsuhiro Kiyono ,  Teiyu Kimura ,  Shinji Kashiwada

    IPC: G01S7/481 ,  G01C3/06 ,  G01J1/44 ,  G01S7/48 ,  G01S7/486 ,  G01S7/4861 ,  G01S7/4863 ,  G01S7/4865 ,  G01S17/08 ,  G01S17/89

    Abstract: An optical distance measuring device includes: a light source unit that irradiates a measurement region with irradiation light; a light receiving unit that has a light receiving surface including a plurality of light receiving elements capable of receiving reflected light from a range including the measurement region corresponding to irradiation with the irradiation light and outputs a signal corresponding to a light receiving state of the reflected light for each of the light receiving elements; and a measurement unit that measures a distance to an object in the measurement region by using the signal outputted from the light receiving unit. The light receiving unit has a function of selecting a light receiving element that outputs the signal so that a light receiving position at which the reflected light is received is variable, and the light receiving unit changes the light receiving position to a plurality of positions with respect to a position of the reflected light.

    Distance measurement apparatus with detection timing correction
    3.
    发明授权
    Distance measurement apparatus with detection timing correction 有权

    公开(公告)号：US11662442B2

    公开(公告)日：2023-05-30

    申请号：US16720553

    申请日：2019-12-19

    Applicant: DENSO CORPORATION

    Inventor： Akifumi Ueno ,  Takehiro Hata ,  Shinji Kashiwada

    IPC: G01S7/4861 ,  G01S17/08 ,  H01L31/02 ,  G01S7/497 ,  G01S17/89

    CPC classification number: G01S7/4861 ,  G01S7/497 ,  G01S17/08 ,  G01S17/89 ,  H01L31/02027

    Abstract: An optical distance measurement apparatus that measures a distance using a round-trip time of light to an object includes an irradiator, a plurality of SPADs, a plurality of signal output units, a response number detector, a timing identifier, and a timing corrector. The response number detector detects a response number representing the number of responding one of the SPADs based on a pulse signal. The timing identifier identifies a temporary timing based on a state of variation in the response number along a time series and identifies a detection timing representing a timing when the optical distance measurement apparatus detects light in accordance with the temporary timing. The timing corrector acquires a correction time representing a time difference between the temporary timing and a true timing corresponding to a distance to an object and sets a timing corrected from the temporary timing by the correction time as the detection timing.

    OPTICAL DETECTOR
    8.
    发明申请
    OPTICAL DETECTOR 有权

    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.

    Optical ranging device, laser light emitting device, and method for manufacturing the same
    9.
    发明授权
    Optical ranging device, laser light emitting device, and method for manufacturing the same 有权

    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.

    Photodetector
    10.
    发明授权
    Photodetector 有权

    公开(公告)号：US11668826B2

    公开(公告)日：2023-06-06

    申请号：US16584033

    申请日：2019-09-26

    Applicant: DENSO CORPORATION

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

    IPC: G01S17/10 ,  H01L31/0232 ,  G01C3/08 ,  G01S7/481

    CPC classification number: G01S17/10 ,  G01C3/08 ,  G01S7/4816 ,  H01L31/02327

    Abstract: A light reception array unit receives light irradiated from an irradiation unit and reflected from an object, and outputs in parallel a pulse signal respectively output from a plurality of light reception units. A timer unit measures an elapsed time since an input of an irradiation timing signal. A response acquisition unit acquires a number of responses, which is a number of the light reception units outputting the pulse signal, at each fixed cycle timing, and outputs an adjusted number of responses obtained by subtracting a bias value from the number of responses or dividing the number of responses by the bias value. An address of a memory is associated with a timer value measured by the timer unit. A histogram generation unit integrates and stores, in a memory address specified from a timer value, the adjusted number of responses as data at that address.

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