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    Laser ranging method, device, and lidar
    1.
    发明授权
    Laser ranging method, device, and lidar 有权

    公开(公告)号：US12253633B2

    公开(公告)日：2025-03-18

    申请号：US18636214

    申请日：2024-04-15

    Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.

    Inventor： Zhaohui Shi

    IPC: G01S7/48 ,  G01S7/486 ,  G01S17/10

    Abstract: Embodiments of the present application provide a laser ranging method, device, and a LiDAR. The method includes: obtaining the quantity of light leading point cloud points in a first preset region in the current frame of point cloud, where the light leading point cloud points are point cloud points corresponding to echoes received by a receiver within a light leading period, and the light leading period is a period less than a first preset duration, starting from an emission moment of a laser beam corresponding to the light leading point cloud points; and adjusting the gain of the receiver within the light leading period to reduce the quantity of the light leading point cloud points.

    Optical device for determining a distance of a measurement object
    2.
    发明授权
    Optical device for determining a distance of a measurement object 有权

    公开(公告)号：US12248065B2

    公开(公告)日：2025-03-11

    申请号：US17196984

    申请日：2021-03-09

    Applicant: Carl Zeiss Industrielle Messtechnik GmbH

    Inventor： Nils Haverkamp

    IPC: G01S17/08 ,  G01S7/484 ,  G01S7/486 ,  G01S7/4911

    Abstract: An optical device for determining a distance of a measurement object includes a LIDAR unit and a light sensor. The LIDAR unit has an illumination device to illuminate the measurement object and a measurement channel to detect a measurement beam reflected from the measurement object and to generate a LIDAR measurement signal. The light sensor has an optical source with a mode-locked laser to generate first and second frequency comb signals and splits the first frequency comb signal into a first measurement signal and a first reference signal and to illuminate the measurement object with the first measurement signal. The light sensor splits the second frequency comb signal into a second measurement signal and a second reference signal. An evaluation unit determines first distance information, evaluates signals detected by a measurement detector and a reference detector, generates a frequency spectrum, and determines second distance information of the measurement object.

    Integrated lidar image-sensor devices and systems and related methods of operation
    3.
    发明授权
    Integrated lidar image-sensor devices and systems and related methods of operation 有权

    公开(公告)号：US12222454B2

    公开(公告)日：2025-02-11

    申请号：US18169909

    申请日：2023-02-16

    Applicant: Sense Photonics, Inc.

    Inventor： Hod Finkelstein ,  Dietrich Dehlinger ,  Scott Burroughs ,  Brent Fisher

    IPC: G01S7/486 ,  G01S7/481 ,  G01S7/4863 ,  G01S7/487

    Abstract: A Light Detection and Ranging (LIDAR) apparatus includes a detector having a first pixel and a second pixel configured to output respective detection signals responsive to light incident thereon, and receiver optics configured to collect the light over a field of view and direct first and second portions of the light to the first and second pixels, respectively. The first pixel includes one or more time of flight (ToF) sensors, and the second pixel includes one or more image sensors. At least one of the receiver optics or arrangement of the first and second pixels in the detector is configured to correlate the first and second pixels such that depth information indicated by the respective detection signals output from the first pixel is correlated with image information indicated by the respective detection signals output from the second pixel. Related devices and methods of operation are also discussed.

    WIDE-DYNAMIC-RANGE SPLIT-DETECTOR LIDAR PHOTORECEIVER
    5.
    发明申请
    WIDE-DYNAMIC-RANGE SPLIT-DETECTOR LIDAR PHOTORECEIVER 有权

    公开(公告)号：US20250044422A1

    公开(公告)日：2025-02-06

    申请号：US18362218

    申请日：2023-07-31

    Applicant: Allegro MicroSystems, LLC

    Inventor： Andrew S. Huntington ,  Adam Lee ,  Michael James Munroe ,  Ronald Talaga

    IPC: G01S7/4863 ,  G01S7/481 ,  G01S7/486 ,  G01S7/4865

    Abstract: Split-detector lidar photoreceivers are described which utilize range-dependent focus to transition from illuminating two detector elements with returns from near targets, within a close-range threshold distance, to illuminating just one detector element for all other returns. In some examples, a split-detector can have or include a “bullseye” (concentric) detector configuration. Because two separate detector elements with separate amplifier chains are used, one channel can be optimized for the strong to and near-target returns, while another channel can be optimized and used for all other returns.

    OPTOELECTRONIC COMPONENT AND LIDAR SYSTEM
    6.
    发明申请
    OPTOELECTRONIC COMPONENT AND LIDAR SYSTEM 有权

    公开(公告)号：US20250035755A1

    公开(公告)日：2025-01-30

    申请号：US18717010

    申请日：2022-11-28

    Applicant: ams-OSRAM International GmbH

    Inventor： Hubert HALBRITTER ,  Simon LANKES ,  Reiner WINDISCH

    IPC: G01S7/484 ,  G01S7/486 ,  G01S17/48 ,  G01S17/58 ,  G02B6/12 ,  G02B6/43

    Abstract: The present disclosure provides an optoelectronic component for a LiDAR system including a photonic integrated circuit. The photonic integrated circuit further includes a microresonator which is configured as an external resonator for an optical gain medium and to provide a frequency-modulated optical transmission field. A waveguide is optically coupled to an output side of the microresonator. A coherent in-line balanced detector comprises an electrical output, as well as a first optical connection side which is coupled to the waveguide to receive the transmission field, and a second optical connection side which is configured to receive a frequency-modulated optical reflection field. The coherent in-line balanced detector is further configured to superimpose the transmission field and the reflection field and to provide an electronic combination signal at the electrical output.

    Lidar transmitter assembly
    8.
    发明授权
    Lidar transmitter assembly 有权

    公开(公告)号：US12078754B1

    公开(公告)日：2024-09-03

    申请号：US17138172

    申请日：2020-12-30

    Applicant: Waymo LLC

    Inventor： David Hutchison ,  James Dunphy ,  Pierre-Yves Droz

    IPC: G01S7/481 ,  G01S7/484 ,  G01S7/486 ,  G01S7/497 ,  G01S17/931 ,  G05D1/00

    CPC classification number: G01S7/4813 ,  G01S7/484 ,  G01S7/486 ,  G01S7/4972 ,  G01S17/931 ,  G05D1/024

    Abstract: The present disclosure relates to optical transmitter modules, lidar systems, and methods of their manufacture. An example optical transmitter module includes a transparent substrate and a plurality of wires disposed along the transparent substrate. The optical transmitter module includes driver circuitry electrically-coupled to at least a portion of the plurality of wires and one or more light-emitter devices electrically-coupled to at least a portion of the plurality of wires. The light-emitter device(s) are configured to emit light pulses. The optical transmitter module also includes a fast axis collimation lens disposed along the transparent substrate. The fast axis collimation lens is configured to collimate the light pulses so as to provide collimated light. The optical transmitter module also includes one or more waveguide structures disposed along the transparent substrate within an optical region. The optical transmitter module also includes a lid configured to provide a sealed interior volume.

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