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    Coherent pulsed lidar system
    22.
    发明授权
    Coherent pulsed lidar system 有权

    公开(公告)号：US10802120B1

    公开(公告)日：2020-10-13

    申请号：US16794439

    申请日：2020-02-19

    Applicant: Luminar Technologies, Inc.

    Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Alex Michael Sincore

    IPC: G01B5/02 ,  G01S7/4865 ,  G01S7/481 ,  G01S7/484 ,  G01S17/10

    Abstract: In one embodiment, a lidar system includes a light source configured to emit (i) local-oscillator light and (ii) pulses of light, where each emitted pulse of light is coherent with a corresponding portion of the local-oscillator light. The lidar system also includes a receiver configured to detect the local-oscillator light and a received pulse of light, the received pulse of light comprising light from one of the emitted pulses of light that is scattered by a target located a distance from the lidar system. The local-oscillator light and the received pulse of light are coherently mixed together at the receiver. The receiver includes one or more detectors configured to produce one or more respective photocurrent signals corresponding to the coherent mixing of the local-oscillator light and the received pulse of light. The receiver also includes a pulse-detection circuit configured to determine a time-of-arrival for the received pulse of light.

    SIZING THE FIELD OF VIEW OF A DETECTOR TO IMPROVE OPERATION OF A LIDAR SYSTEM
    24.
    发明申请
    SIZING THE FIELD OF VIEW OF A DETECTOR TO IMPROVE OPERATION OF A LIDAR SYSTEM 审中-公开

    公开(公告)号：US20200256964A1

    公开(公告)日：2020-08-13

    申请号：US16861696

    申请日：2020-04-29

    Applicant: Luminar Technologies, Inc.

    Inventor： Scott R. Campbell ,  Lane A. Martin ,  Matthew D. Weed ,  Jason M. Eichenholz

    IPC: G01S7/4865 ,  G01S7/4861 ,  G01S17/10 ,  G01S7/486 ,  G01S17/42

    Abstract: A lidar system includes a light source, a scanner, and a receiver and is configured to detect remote targets located up to RMAX meters away. The receiver includes a detector with a field of view larger than the light-source field of view. The scanner causes the detector field of view to move relative to the instantaneous light-source field of view along the scan direction, so that (i) when a pulse of light is emitted, the instantaneous light-source field of view is approximately centered within the detector field of view, and (ii) when a scattered pulse of light returns from a target located RMAX meters away, the instantaneous light-source field of view is located near an edge of the field of view of the detector and is contained within the field of view of the detector.

    CAMERA-GATED LIDAR SYSTEM
    25.
    发明申请
    CAMERA-GATED LIDAR SYSTEM 审中-公开

    公开(公告)号：US20200217960A1

    公开(公告)日：2020-07-09

    申请号：US16817989

    申请日：2020-03-13

    Applicant: Luminar Technologies, Inc.

    Inventor： Richmond Hicks ,  Matthew D. Weed ,  Jason M. Eichenholz

    IPC: G01S17/18 ,  G01S17/89 ,  G01S7/481 ,  G02B26/10 ,  H04N5/232

    Abstract: A machine vision system comprises a camera configured to generate one or more images of a field of regard of the camera, a lidar system, and a processor. The lidar system includes a laser configured to emit light, where the emitted light is directed toward a region within the field of regard of the camera and a receiver configured to detect light returned from the emitted light. The processor is configured to receive an indication of a location based on the returned light and determine, based on the one or more images generated by the camera, whether the indication of the location is associated with a spurious return.

    Combining lidar and camera data
    26.
    发明授权
    Combining lidar and camera data 有权

    公开(公告)号：US10677897B2

    公开(公告)日：2020-06-09

    申请号：US15954427

    申请日：2018-04-16

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Joseph G. LaChapelle ,  Jason M. Eichenholz

    IPC: G01S17/89 ,  G01S17/93 ,  G01S7/481 ,  G06K9/00 ,  G06K9/62 ,  H04N5/232 ,  G01S17/42 ,  G01S17/86 ,  G01S17/931

    Abstract: A system includes a lidar, a camera, and a controller communicatively coupled to the camera and the lidar. The lidar includes a laser configured to emit pulses of light, a scanner configured to direct the emitted pulses in accordance with a scan pattern, and a receiver configured to detect the emitted pulse of light scattered by one or more remote targets to collect a set of lidar pixels of a scan frame, in a sequence defined by the scan pattern. The camera has a field of regard that at least partially overlaps the field of regard of the lidar. The controller is configured to cause the camera to capture images while the receiver of the lidar module collects the complete set of lidar pixels of the scan frame, and align lidar pixels with corresponding pixels in the captured images.

    SCAN SENSORS ON THE EXTERIOR SURFACES OF A VEHICLE
    29.
    发明申请
    SCAN SENSORS ON THE EXTERIOR SURFACES OF A VEHICLE 审中-公开

    公开(公告)号：US20190154803A1

    公开(公告)日：2019-05-23

    申请号：US16046584

    申请日：2018-07-26

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Jason M. Eichenholz

    IPC: G01S7/481 ,  G01S17/93 ,  G01S17/89

    Abstract: A vehicle includes a body with multiple interior and exterior surfaces and a lidar system including a set of one or more sensor units. Each sensor unit includes a light source configured to emit light, a scanner configured to direct the emitted light to scan a field of regard of the sensor unit according to a scan pattern, a receiver configured to detect the light scattered by one or more remote targets, and a housing enclosing the light source, the scanner, and the receiver. The housing of each sensor unit is embedded in one of the interior or exterior surfaces, so that a first portion of the housing projects out of the body and a second portion of the housing is inside the body.

    CONCURRENT SCAN OF MULTIPLE PIXELS IN A LIDAR SYSTEM EQUIPPED WITH A POLYGON MIRROR
    30.
    发明申请
    CONCURRENT SCAN OF MULTIPLE PIXELS IN A LIDAR SYSTEM EQUIPPED WITH A POLYGON MIRROR 审中-公开

    公开(公告)号：US20190154802A1

    公开(公告)日：2019-05-23

    申请号：US15965288

    申请日：2018-04-27

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Scott R. Campbell ,  Jason M. Eichenholz ,  Matthew D. Weed ,  Lane A. Martin

    IPC: G01S7/481 ,  G02B26/10

    Abstract: A lidar system includes one or more light sources configured to generate a first and second beams of light, a scanner configured to synchronously scan a field of regard of the lidar system using the two beams, and a receiver configured to detect light of the two beams scattered by one or more remote targets. The scanner includes a rotatable polygon mirror having a block having a first wall, a second wall, and reflective surfaces extending between the first and second walls, the reflective surfaces being angularly offset from one another along a periphery of the block; a polygon mirror axle extending into the block, about which the block rotates; optical elements configured to direct the first and second beams of light respectively to two adjacent reflective surfaces of the rotatable polygon mirror; and a second mirror pivotable along an axis orthogonal to the polygon mirror axle.

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