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公开(公告)号：US12025739B1
公开(公告)日：2024-07-02
申请号：US18518411
申请日：2023-11-22
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.
Inventor： Jing Wang , Chunxin Qiu , Letian Liu
IPC: G01S7/481 , G01S17/931
CPC classification number: G01S7/4813 , G01S7/4817 , G01S17/931
Abstract: This application discloses a frequency modulated continuous wave LiDAR and an autonomous driving device. The LiDAR includes a light source module, a silicon photonic chip and a refraction module, and the silicon photonic chip includes a light splitting module, a coupling module and multiple transceiving units. The light splitting module receives a laser beam coupled into the silicon photonic chip, divides the laser beam into multiple beams of detection light, and transmits the multiple beams of detection light to corresponding multiple transceiving units, and the transceiving units emit the received detection light outward. The refraction module is configured to refract the detection light emitted by the multiple transceiving units to emit multiple beams of detection light in a staggered manner in a second direction, where the second direction is a direction perpendicular to the terminal surface of the transceiving unit.
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公开(公告)号：US11768272B2
公开(公告)日：2023-09-26
申请号：US16937543
申请日：2020-07-23
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.
Inventor： Chunxin Qiu , Letian Liu
IPC: G01S7/481 , G01S17/931 , G01S7/48
CPC classification number: G01S7/4813 , G01S7/4804 , G01S17/931
Abstract: Embodiments of the disclosure provide a LiDAR assembly. The LiDAR assembly includes a central LiDAR device configured to detect an object at or beyond a first predetermined distance from the LiDAR system and an even number of multiple auxiliary LiDAR devices configured to detect an object at or within a second predetermined distance from the LiDAR system. The LiDAR assembly also includes a mounting apparatus configured to mount the central and auxiliary LiDAR devices. Each of the central and auxiliary LiDAR devices is mounted to the mounting apparatus via a mounting surface. A first mounting surface between the central LiDAR device and the mounting apparatus has an angle with a second mounting surface between one of the auxiliary LiDAR devices and the mounting apparatus.
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公开(公告)号：US11592553B2
公开(公告)日：2023-02-28
申请号：US16095321
申请日：2016-04-22
Applicant: Suteng Innovation Technology Co., LTD
Inventor： Chunxin Qiu , Letian Liu
Abstract: Provided are a pulse laser ranging system and method employing a time domain waveform matching technique. The system comprises a software part and a hardware part. The hardware part comprises an optical collimation system, an FPGA, a filter, a photoelectric conversion system, an analog amplifier circuit, a laser transmitter, a signal combination system, an ADC sampling system and a narrow pulse laser transmitting circuit. When transmitting a control signal to control laser transmission, the FPGA sends a time reference pulse to the signal combination system. The signal combination system integrates the time reference pulse with a fixed amplitude analog echo signal to form an echo signal with a time reference. The echo signal with a time reference is quantified into a digital detection signal in the ADC sampling system. The digital detection signal is sent to the FPGA to undergo data analysis. The software part is used to perform time domain waveform matching analysis to obtain a ranging result. The ranging result is output by the FPGA.
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Patent Agency Ranking
公开(公告)号：US10746855B2
公开(公告)日：2020-08-18
申请号：US16474425
申请日：2017-10-18
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.
Inventor： Chunxin Qiu , Letian Liu
Abstract: Disclosed are a multi-line lidar and a control method therefor. The multi-line lidar comprises: a laser emitter (110) for emitting outgoing lasers, comprising a plurality of laser emitting boards (111, 211, 212, 211, 212, 213, 310 and 320), and an optical collimating unit (120) for collimating the outgoing lasers. Light-emitting surfaces of the plurality of laser emitting boards (111) are located in a focal plane (130) of the optical collimating unit (120).
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公开(公告)号：US20190129031A1
公开(公告)日：2019-05-02
申请号：US16095321
申请日：2016-04-22
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD
Inventor： Chunxin Qiu , Letian Liu
Abstract: Provided are a pulse laser ranging system and method employing a time domain waveform matching technique. The system comprises a software part and a hardware part. The hardware part comprises an optical collimation system, an FPGA, a filter, a photoelectric conversion system, an analog amplifier circuit, a laser transmitter, a signal combination system, an ADC sampling system and a narrow pulse laser transmitting circuit. When transmitting a control signal to control laser transmission, the FPGA sends a time reference pulse to the signal combination system. The signal combination system integrates the time reference pulse with a fixed amplitude analog echo signal to form an echo signal with a time reference. The echo signal with a time reference is quantified into a digital detection signal in the ADC sampling system. The digital detection signal is sent to the FPGA to undergo data analysis. The software part is used to perform time domain waveform matching analysis to obtain a ranging result. The ranging result is output by the FPGA.
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16.发明授权公开(公告)号：US12092736B2
公开(公告)日：2024-09-17
申请号：US18207648
申请日：2023-06-08
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.
Inventor： Letian Liu , Shen Jiang , Chunxin Qiu
CPC classification number: G01S17/08 , G01S7/4814 , G01S7/4816
Abstract: The present application discloses an optical signal processing circuit for a Lidar. The optical signal processing circuit includes an optical processing circuit, a gain control circuit connected to the optical processing circuit, and a controller connected to the gain control circuit. The optical processing circuit includes an optical sensor and an amplification circuit. The optical sensor is configured to convert an optical signal to a photocurrent signal, and the amplification circuit is configured to convert and amplify the photocurrent signal to a voltage signal. The controller adjusts a gain of the optical processing circuit via the gain control circuit and based on an amplitude of the voltage signal.
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公开(公告)号：US11125864B2
公开(公告)日：2021-09-21
申请号：US16726035
申请日：2019-12-23
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.
Inventor： Chunxin Qiu , Letian Liu
IPC: G01S7/497 , G01S17/931 , G01S17/894 , G01S7/481
Abstract: The present disclosure provides a multi-beam LiDAR system. The multi-beam LiDAR system includes a transmitter having an array of laser emitters. Each laser emitter is configured to emit a laser beam. The multi-beam LiDAR system also includes a receiver having an array of photodetectors. Each photodetector is configured to receive at least one return beam that is reflected by an object from one of the laser beams. The laser emitter array includes a plurality of laser emitter boards perpendicular to a horizontal plane. Each laser emitter board has a plurality of laser emitters. The plurality of laser emitters in the laser emitter array are staggered along a vertical direction. The photodetector array includes a plurality of columns of photodetectors. One of the laser emitter boards corresponds to one column of photodetectors.
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公开(公告)号：US20190339367A1
公开(公告)日：2019-11-07
申请号：US16474425
申请日：2017-10-18
Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.
Inventor： Chunxin Qiu , Letian Liu
Abstract: Disclosed are a multi-line lidar and a control method therefor. The multi-line lidar comprises: a laser emitter (110) for emitting outgoing lasers, comprising a plurality of laser emitting boards (111, 211, 212, 211, 212, 213, 310 and 320), and an optical collimating unit (120) for collimating the outgoing lasers. Light-emitting surfaces of the plurality of laser emitting boards (111) are located in a focal plane (130) of the optical collimating unit (120).
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