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    LIDAR Transmitter and Detector System Using Pulse Encoding to Reduce Range Ambiguity
    4.
    发明申请
    LIDAR Transmitter and Detector System Using Pulse Encoding to Reduce Range Ambiguity 审中-公开

    公开(公告)号：US20180284279A1

    公开(公告)日：2018-10-04

    申请号：US15917628

    申请日：2018-03-10

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Scott R. Campbell ,  Joseph G. LaChapelle ,  Jason M. Eichenholz ,  Austin K. Russell

    IPC: G01S17/10 ,  G01S7/481 ,  G01S7/486 ,  G01S7/484

    Abstract: A lidar system includes a transmitter that encodes successive transmit pulses with different pulse characteristics and a receiver that detects the pulse characteristics of each received (scattered or reflected) pulse and that distinguishes between the received pulses based on the detected pulse characteristics. The lidar system thus resolves range ambiguities by encoding pulses of scan positions in the same or different scan periods to have different pulse characteristics, such as different pulse widths or different pulse envelope shapes. The receiver includes a pulse decoder configured to detect the relevant pulse characteristics of the received pulse and a resolver that determines if the pulse characteristics of the received pulse matches the pulse characteristics of the current scan position or that of a previous scan position.

    Determining distortion by tracking objects across successive frames
    7.
    发明授权
    Determining distortion by tracking objects across successive frames 有权

    公开(公告)号：US10495739B1

    公开(公告)日：2019-12-03

    申请号：US16196618

    申请日：2018-11-20

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Eric C. Danziger ,  Austin K. Russell

    IPC: G01S17/00 ,  G01S7/497 ,  G01S17/42 ,  G01S17/93 ,  G05D1/02 ,  G01S17/89 ,  G01S17/02 ,  G01S17/87 ,  G01S7/481 ,  G06N20/00 ,  G01S17/06 ,  G01S17/58

    Abstract: A computer-implemented method of determining relative velocity between a vehicle and an object. The method includes receiving sensor data generated by one or more sensors of the vehicle. The one or more sensors are configured to sense an environment through which the vehicle is moving by following a scan pattern comprising component scan lines. The method also includes obtaining, based on the sensor data and by one or more processors, two or more point cloud frames representative of the environment and tracking, by the one or more processors, a point cloud object across the two or more point cloud frames. Additionally, the method includes determining, based on the tracking and by the one or more processors, a relative velocity of the point cloud object and correcting, by the one or more processors, the point cloud object based on the relative velocity of the point cloud object.

    ADJUSTING AREA OF FOCUS OF VEHICLE SENSORS BY CONTROLLING SPATIAL DISTRIBUTIONS OF SCAN LINES
    9.
    发明申请
    ADJUSTING AREA OF FOCUS OF VEHICLE SENSORS BY CONTROLLING SPATIAL DISTRIBUTIONS OF SCAN LINES 审中-公开

    公开(公告)号：US20190179026A1

    公开(公告)日：2019-06-13

    申请号：US16176624

    申请日：2018-10-31

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Benjamin Englard ,  Eric C. Danziger ,  Austin K. Russell

    IPC: G01S17/89 ,  G01S17/02 ,  G01S17/66 ,  G01S7/48

    Abstract: A method for controlling at least a first sensor of a vehicle, which senses an environment through which the vehicle is moving by producing a plurality of scan lines arranged according to a spatial distribution, includes receiving sensor data generated by one or more sensors. The one or more sensors are configured to sense the environment through which the vehicle is moving. The method also includes identifying, by one or more processors and based on the received sensor data, one or more areas of interest in the environment, and causing, by one or more processors and based on the areas of interest, the spatial distribution of the plurality of scan lines produced by the first sensor to be adjusted.

    LOW PROFILE LIDAR SCANNER WITH POLYGON MIRROR
    10.
    发明申请
    LOW PROFILE LIDAR SCANNER WITH POLYGON MIRROR 审中-公开

    公开(公告)号：US20190154836A1

    公开(公告)日：2019-05-23

    申请号：US15965197

    申请日：2018-04-27

    Applicant: LUMINAR TECHNOLOGIES, INC.

    Inventor： Scott R. Campbell ,  Jason M. Eichenholz ,  Austin K. Russell ,  John G. Hughes

    IPC: G01S17/93 ,  G02B27/09 ,  G01S17/08 ,  G01S17/89

    Abstract: A lidar system comprises a light source configured to emit light, a scanner configured to direct the emitted light to scan a field of regard of the lidar system in accordance with a scan pattern, a receiver configured to detect the light scattered by one or more remote targets, and a controller configured to control motion of at least the second mirror to modify the scan pattern. 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. The scanner also includes a polygon mirror axle extending into the block through at least one of the first and second walls, about which the block rotates, and a second mirror pivotable along an axis orthogonal to the polygon mirror axle.

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