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    OPTICAL SENSOR AND ELECTRONIC DEVICE
    2.
    发明申请
    OPTICAL SENSOR AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20200088875A1

    公开(公告)日：2020-03-19

    申请号：US16613999

    申请日：2018-03-14

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： HIDEKI SATO ,  TAKUMA HIRAMATSU ,  TAKAYUKI SHIMIZU ,  YOSHIKI IKUTA

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

    Abstract: An optical sensor for appropriately updating a crosstalk value is provided with: a photon-counting type of first light-receiving unit for receiving target object reflected light and cover panel reflected light; and a determination circuit that determines whether or not the target object reflected light is received by the first light-receiving unit, on the basis of a first received light pulse signal that is based on at least one of the target object reflected light and the cover panel reflected light, and a reference pulse signal.

    PHOTODETECTOR AND PORTABLE ELECTRONIC EQUIPMENT
    5.
    发明申请
    PHOTODETECTOR AND PORTABLE ELECTRONIC EQUIPMENT 有权

    公开(公告)号：US20210141069A1

    公开(公告)日：2021-05-13

    申请号：US16613985

    申请日：2018-03-29

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： TAKAYUKI SHIMIZU ,  TAKUMA HIRAMATSU ,  YOSHIKI IKUTA ,  HIDEKI SATO

    IPC: G01S7/497 ,  G01S17/10

    Abstract: Effects of ambient light are suppressed, and distance to a detection object is measured with high precision. A ranging sensor includes a VCSEL, a SPAD array that has multiple SPADs that detect photons of pulse light emitted by the VCSEL, a SPAD array that has multiple SPADs that detect photons of reflected light where the pulse light has been reflected by a detection object, a DLL that measures a time difference between a pulse signal output from the SPADs of the SPAD array and a pulse signal output from the SPADs of the SPAD array, an ambient-light-incident SPAD determining unit that determines a SPAD on which ambient light is incident, based on pulse signals output from SPADs of the SPAD array when the VCSEL is not emitting light, and a SPAD front-end circuit that stops operation of the SPAD for which determination is made that ambient light is incident.

    RANGING SENSOR
    7.
    发明申请
    RANGING SENSOR 有权

    公开(公告)号：US20210018628A1

    公开(公告)日：2021-01-21

    申请号：US16926498

    申请日：2020-07-10

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： HIDEKI SATO ,  TAKUMA HIRAMATSU ,  TAKAYUKI SHIMIZU ,  YOSHIKI IKUTA

    IPC: G01S17/66 ,  G01S7/481 ,  G01S17/86 ,  G01S7/4863 ,  G01S7/484

    Abstract: A ranging sensor includes a light emitting unit includes a plurality of light emitting elements, a light receiving unit including a plurality of light receiving elements, a space control unit, a position estimation unit, and a TOF signal processing unit, operates in cooperation with an RGB camera module, and generates target distance information for generating three-dimensional position information. The space control unit independently controls each element group including a light emitting element and a light receiving element allocated to a common subspace. The position estimation unit estimates, from received light amount distribution of a plurality of light receiving elements receiving a reflected light beam from the target existing in a space of each subspace, a position of the target in the space of the subspace group. The TOF signal processing unit performs TOF signal processing in parallel with channels whose number is less than that of light emitting elements.

    OPTICAL SENSOR AND ELECTRONIC DEVICE
    8.
    发明申请
    OPTICAL SENSOR AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20190129015A1

    公开(公告)日：2019-05-02

    申请号：US16306514

    申请日：2017-04-21

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： YOSHIKI IKUTA ,  HIDEKI SATO ,  TAKUMA HIRAMATSU ,  TAKAYUKI SHIMIZU

    IPC: G01S7/486 ,  G01S17/10

    Abstract: An optical sensor of the present invention changes a light-emitting period of a light-emitting element and a period of a reference clock that is used by a time difference extracting circuit, depending on whether or not a digital value that is output from a first digital calculating portion exceeds a reference value in a determination period. With this, there is achieved an optical sensor capable of maintaining both of measurement accuracy at short distance and measurement accuracy at long distance when a housing panel is present between the optical sensor and a detection target.

    OPTICAL SENSOR AND ELECTRONIC DEVICE
    9.
    发明申请
    OPTICAL SENSOR AND ELECTRONIC DEVICE 审中-公开

    公开(公告)号：US20190257689A1

    公开(公告)日：2019-08-22

    申请号：US16330957

    申请日：2017-06-02

    Applicant: SHARP KABUSHIKI KAISHA

    Inventor： YOSHIKI IKUTA ,  TAKUMA HIRAMATSU ,  TAKAYUKI SHIMIZU ,  HIDEKI SATO

    IPC: G01J1/42 ,  H01L31/107 ,  H01L31/12 ,  G01S17/10

    Abstract: Whether an optical delay on a space optical path is within a light emission cycle is accurately determined without narrowing a range of a measurable distance in the light emission cycle. A DFF 1 that divides an output pulse of a first DLL (121) by two to provide a first time offset and a DFF 2 that divides an output pulse of a second DLL (122) by two to provide a second time offset are included, and at least following mathematical formulas (1) and (2) are satisfied:   (1)   (2) (where, m≥1),when a time corresponding to a difference between the first time offset and the second time offset is O1 and the first cycle is T1.

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