LiDAR System with Transmit Optical Power Monitor

    公开(公告)号:US20220146680A1

    公开(公告)日:2022-05-12

    申请号:US17522953

    申请日:2021-11-10

    Abstract: A LiDAR transmitter with optical power monitoring includes a laser array positioned in a first plane that generates optical beams that propagate along an optical path. A first projecting optical element positioned in the optical path projects the plurality of optical beams to overlap at a common point. A second projecting optical element projects light from the first projecting optical element in a direction of transmission. A directing optical element positioned at the common point in the optical path of the plurality of beams produces an illumination region with light from each of the plurality of beams in a second plane. A monitor generates a detected signal in response to the collected light. A controller generates the electrical signal in response to the detected signal that controls the laser to achieve a desired operation of the LiDAR system transmitter.

    High-Resolution Solid-State LIDAR Transmitter

    公开(公告)号:US20210033708A1

    公开(公告)日:2021-02-04

    申请号:US16941896

    申请日:2020-07-29

    Inventor: Larry Fabiny

    Abstract: A solid-state LIDAR transmitter includes a laser array comprising first and second laser pixels that each generate first and second sub-aperture beams. A first microlens focuses first and second sub-aperture beams generated by the first laser pixel and focuses first and second sub-aperture beams generated by the second laser pixel. A second microlens directs the first and second sub-aperture beams generated by the first pixel such that they overlap at a plane. A lens projects the first sub-aperture beam generated by the first laser pixel and the first sub-aperture beam generated by the second laser pixel with a different angle in the far field in order to achieve a desired spatial resolution of the LIDAR system.

    Noise Adaptive Solid-State LIDAR System
    3.
    发明申请

    公开(公告)号:US20190302246A1

    公开(公告)日:2019-10-03

    申请号:US16366729

    申请日:2019-03-27

    Abstract: A LIDAR system includes an optical transmitter comprising a plurality of lasers, each illuminating a FOV in an illumination region. A transmitter controller has outputs connected to respective laser inputs. The transmitter controller generates electrical pulses at the outputs so that the lasers generate light in a desired pattern in the illumination region. An optical receiver has an input FOV in the illumination region and comprises a plurality of detectors, each having a FOV and being positioned to detect light over the illumination region; and a TOF measurement circuit that measures the TOF from the lasers to the detectors. The receiver calculates range information. An adaptive optical shutter positioned between the optical transmitter and the optical receiver has a transparent or reflected region FOV, where the optical shutter restricts illumination at the input of the optical receiver to a region which is smaller than the optical receiver FOV.

    Method and Apparatus for Reducing Blooming in LiDAR Systems

    公开(公告)号:US20240345223A1

    公开(公告)日:2024-10-17

    申请号:US18632602

    申请日:2024-04-11

    Inventor: Larry Fabiny

    CPC classification number: G01S7/4816 G01S7/4863

    Abstract: A LiDAR receiver includes an optical element configured with an optical power that projects light rays received at an input to a region where the received light rays overlap. An apodized aperture in the region where the received light rays overlap is configured with an optical transmission profile that changes radially across the apodized aperture to provide a desired modulation of the overlapped received light rays. Detector optics positioned adjacent to the apodized aperture focuses the modulated light rays at a detector plane. A two-dimensional pixilated detector array is positioned at the detector plane. The detector optics and desired modulation are chosen so that a ratio of an intensity of modulated light rays on one pixel of the two-dimensional array of pixels to an intensity of modulated light rays on an adjacent pixel of the two-dimensional array of pixels is a desired value.

    Eye-safe long-range solid-state LIDAR system

    公开(公告)号:US11513195B2

    公开(公告)日:2022-11-29

    申请号:US16895588

    申请日:2020-06-08

    Abstract: A solid-state LIDAR system includes a plurality of lasers, each generating an optical beam having a FOV when energized. A plurality of detectors is positioned in an optical path of the optical beams generated by the plurality of lasers. A FOV of at least one of the plurality of optical beams generated by the plurality of lasers overlaps a FOV of at least two of the plurality of detectors. A controller is configured to generate bias signals at a plurality of laser control outputs that energize a selected group of the plurality of lasers in a predetermined time sequence and is configured to detect a predetermined sequence of detector signals generated by the plurality of detectors.

    High-Resolution Solid-State LIDAR Transmitter

    公开(公告)号:US20250138159A1

    公开(公告)日:2025-05-01

    申请号:US19008252

    申请日:2025-01-02

    Inventor: Larry Fabiny

    Abstract: A solid-state LIDAR transmitter includes a laser array comprising first and second laser pixels that each generate first and second sub-aperture beams. A first microlens focuses first and second sub-aperture beams generated by the first laser pixel and focuses first and second sub-aperture beams generated by the second laser pixel. A second microlens directs the first and second sub-aperture beams generated by the first pixel such that they overlap at a plane. A lens projects the first sub-aperture beam generated by the first laser pixel and the first sub-aperture beam generated by the second laser pixel with a different angle in the far field in order to achieve a desired spatial resolution of the LIDAR system.

    High-resolution solid-state LIDAR transmitter

    公开(公告)号:US12222445B2

    公开(公告)日:2025-02-11

    申请号:US16941896

    申请日:2020-07-29

    Inventor: Larry Fabiny

    Abstract: A solid-state LIDAR transmitter includes a laser array comprising first and second laser pixels that each generate first and second sub-aperture beams. A first microlens focuses first and second sub-aperture beams generated by the first laser pixel and focuses first and second sub-aperture beams generated by the second laser pixel. A second microlens directs the first and second sub-aperture beams generated by the first pixel such that they overlap at a plane. A lens projects the first sub-aperture beam generated by the first laser pixel and the first sub-aperture beam generated by the second laser pixel with a different angle in the far field in order to achieve a desired spatial resolution of the LIDAR system.

    Noise Adaptive Solid-State LIDAR System
    9.
    发明公开

    公开(公告)号:US20240019549A1

    公开(公告)日:2024-01-18

    申请号:US18475465

    申请日:2023-09-27

    Abstract: A LIDAR system includes an optical transmitter comprising a plurality of lasers, each illuminating a FOV in an illumination region. A transmitter controller has outputs connected to respective laser inputs. The transmitter controller generates electrical pulses at the outputs so that the lasers generate light in a desired pattern in the illumination region. An optical receiver has an input FOV in the illumination region and comprises a plurality of detectors, each having a FOV and being positioned to detect light over the illumination region; and a TOF measurement circuit that measures the TOF from the lasers to the detectors. The receiver calculates range information. An adaptive optical shutter positioned between the optical transmitter and the optical receiver has a transparent or reflected region FOV, where the optical shutter restricts illumination at the input of the optical receiver to a region which is smaller than the optical receiver FOV.

    Eye-Safe Long-Range Solid-State LIDAR System
    10.
    发明公开

    公开(公告)号:US20230258778A1

    公开(公告)日:2023-08-17

    申请号:US17976554

    申请日:2022-10-28

    Abstract: A solid-state LIDAR system includes a plurality of lasers, each generating an optical beam having a FOV when energized. A plurality of detectors is positioned in an optical path of the optical beams generated by the plurality of lasers. A FOV of at least one of the plurality of optical beams generated by the plurality of lasers overlaps a FOV of at least two of the plurality of detectors. A controller is configured to generate bias signals at a plurality of laser control outputs that energize a selected group of the plurality of lasers in a predetermined time sequence and is configured to detect a predetermined sequence of detector signals generated by the plurality of detectors.

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