Patents Assigned to HESAI PHOTONICS TECHNOLOGY CO., LTD.
  • Patent number: 11002835
    Abstract: A distributed LiDAR comprises: an optical transceiver assembly, multiple distributed scanning units, and a distributed optical fiber connector assembly. The optical transceiver assembly includes: a light source emitting detection light, and a light receiving unit used for receiving a detection echo. The multiple distributed scanning units are distributed on the carrier of the distributed LiDAR. The distributed optical fiber connector assembly is in coupled connection with the optical transceiver assembly and the multiple distributed scanning units. The detection light emitted by the light source in the optical transceiver assembly is synchronously transmitted by the distributed optical fiber connector assembly to the multiple distributed scanning units. The multiple distributed scanning units emit the detection light to a detected area with a scanning device, and receive a reflected echo from the detected area.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 11, 2021
    Assignee: Hesai Photonics Technology Co., Ltd.
    Inventors: Zhengqing Pan, Liangchen Ye, Shaoqing Xiang, Yifan Li
  • Patent number: 10935638
    Abstract: The present invention provides a laser radar system, including: a transmission module, disposed in a transmission optical path, and adapted to transmit a laser beam; a rotating shaft; and a receiving module, disposed in a receiving optical path, and adapted to receive an echo signal of the laser beam, the receiving module including a receiving lens group and a detection assembly. The transmission module and the receiving module are respectively disposed on a first side and a second side of the rotating shaft and are adapted to rotate around the rotating shaft. The receiving optical path includes a first receiving optical path and a second receiving optical path. In the first receiving optical path, the echo signal of the laser beam is transmitted from the first side of the rotating shaft to the second side of the rotating shaft and is received by the receiving lens group.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: March 2, 2021
    Assignee: Hesai Photonics Technology Co., Ltd.
    Inventors: Shixiang Wu, Shaoqing Xiang
  • Patent number: 10845472
    Abstract: A multi-line Lidar includes: a multi-line ranging laser emission module comprising one or more lasers; a multi-line ranging laser reception module comprising one or more photodetectors and adapted to detect a laser echo generated when a measurement laser emitted by the laser emission module is incident to an obstacle and is diffusedly reflected; a ranging information resolution module in electrical signal connection with the multi-line ranging laser emission module and the multi-line ranging laser reception module, and designed to calculate the distance, in each direction, to the obstacle by means of calculating the time difference between the emission of the measurement laser and the receiving of the laser echo; and a control circuit and an optical system correspondingly configured for the multi-line ranging laser emission module and the multi-line ranging laser reception module.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: November 24, 2020
    Assignee: Hesai Photonics Technology Co., Ltd.
    Inventors: Rui Wang, Na Li, Shaoqing Xiang, Yifan Li
  • Patent number: 10816647
    Abstract: A Lidar system may comprise a rotor and a stator. The rotor is configured to rotate with respect to the stator. The rotor comprises at least one supporting body and a plurality of light sources disposed on the at least one supporting body, the plurality of light sources configured to emit a plurality of first light beams. The plurality of light beams are non-uniformly distributed along a vertical direction in a vertical field of view of the Lidar system.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: October 27, 2020
    Assignee: Hesai Photonics Technology Co., Ltd.
    Inventors: Shaoqing Xiang, Na Li, Yancong Lu
  • Publication number: 20200292671
    Abstract: The present invention provides a laser radar system, including: a transmission module, disposed in a transmission optical path, and adapted to transmit a laser beam; a rotating shaft; and a receiving module, disposed in a receiving optical path, and adapted to receive an echo signal of the laser beam, the receiving module including a receiving lens group and a detection assembly. The transmission module and the receiving module are respectively disposed on a first side and a second side of the rotating shaft and are adapted to rotate around the rotating shaft. The receiving optical path includes a first receiving optical path and a second receiving optical path. In the first receiving optical path, the echo signal of the laser beam is transmitted from the first side of the rotating shaft to the second side of the rotating shaft and is received by the receiving lens group.
    Type: Application
    Filed: March 4, 2020
    Publication date: September 17, 2020
    Applicant: Hesai Photonics Technology Co., Ltd.
    Inventors: Shixiang WU, Shaoqing XIANG
  • Patent number: 10620302
    Abstract: A Lidar system is provided. The Lidar system comprise: a light source configured to emit a multi-pulse sequence to measure a distance between the Lidar system and a location in a three-dimensional environment, and the multi-pulse sequence comprises multiple pulses having a temporal profile; a photosensitive detector configured to detect light pulses from the three-dimensional environment; and one or more processors configured to: determine a coding scheme comprising the temporal profile, wherein the coding scheme is determined dynamically based on one or more real-time conditions including an environment condition, a condition of the Lidar system or a signal environment condition; and calculate the distance based on a time of flight of a sequence of detected light pulses, wherein the time of flight is determined by determining a match between the sequence of detected light pulses and the temporal profile.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: April 14, 2020
    Assignee: HESAI PHOTONICS TECHNOLOGY CO., LTD.
    Inventors: Xuezhou Zhu, Shaoqing Xiang
  • Patent number: 10571552
    Abstract: A scanner and a method for controlling the scanner for a Lidar system are provided. The method comprises: producing a trigger signal by a positional sensor of the scanner; generating a single drive signal comprising a first component at a first frequency and a second component at a second frequency, the first component and the second component are superposed with a fixed phase relationship with aid of the trigger signal; transmitting the single drive signal to the scanner, and the scanner has resonant responses at the first frequency; and actuating the scanner to move in a first periodic motion at the first frequency about a first axis, and move in a second periodic motion at the second frequency about a second axis.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: February 25, 2020
    Assignee: HESAI PHOTONICS TECHNOLOGY CO., LTD.
    Inventors: Yongfeng Gao, Shengping Mao, Liangchen Ye, Shaoqing Xiang
  • Patent number: 10509112
    Abstract: A laser system is provided. The laser system comprises: a seed laser configured to produce a sequence of seed light pulses, wherein the sequence of seed light pulses are produced with variable time intervals in a sweep cycle; a pump laser configured to produce pump light having variable amplitude in the sweep cycle; and a control unit configured to generate a command to the pump laser to synchronize the pump light with the sequence of seed light pulses.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: December 17, 2019
    Assignee: HESAI PHOTONICS TECHNOLOGY CO., LTD.
    Inventor: Zhengqing Pan
  • Patent number: 10473767
    Abstract: A Lidar system may comprise a rotor and a stator. The rotor is configured to rotate with respect to the stator. The rotor comprises at least one supporting body and a plurality of light sources disposed on the at least one supporting body, the plurality of light sources configured to emit a plurality of first light beams. The plurality of light beams are non-uniformly distributed along a vertical direction in a vertical field of view of the Lidar system.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: November 12, 2019
    Assignee: Hesai Photonics Technology Co., Ltd.
    Inventors: Shaoqing Xiang, Na Li, Yancong Lu
  • Patent number: 10466342
    Abstract: A Lidar system is provided. The Lidar system comprise: a light source configured to emit a multi-pulse sequence to measure a distance between the Lidar system and a location in a three-dimensional environment, and the multi-pulse sequence comprises multiple pulses having a temporal profile; a photosensitive detector configured to detect light pulses from the three-dimensional environment; and one or more processors configured to: determine a coding scheme comprising the temporal profile, wherein the coding scheme is determined dynamically based on one or more real-time conditions including an environment condition, a condition of the Lidar system or a signal environment condition; and calculate the distance based on a time of flight of a sequence of detected light pulses, wherein the time of flight is determined by determining a match between the sequence of detected light pulses and the temporal profile.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: November 5, 2019
    Assignee: HESAI PHOTONICS TECHNOLOGY CO., LTD.
    Inventors: Xuezhou Zhu, Shaoqing Xiang
  • Patent number: 10444356
    Abstract: A Lidar system may comprise: a laser configured to emit a laser beam; a reflector configured to receive the emitted laser beam and allow at least a portion of the emitted laser beam to transmit through the reflector, the at least the portion of the emitted laser beam being detection light; a two-dimensional scanning galvanometer; and a detector. The two-dimensional scanning galvanometer is configured to reflect the detection light to scan across an environment, receive at least a portion of the detection light reflected by a target in the environment, the at least the portion of the detection light reflected by the target being receiving light, and reflect the receiving light towards the reflector. The reflector is further configured to reflect the receiving light towards the detector. The detector is configured to measure the receiving light to detect the target.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: October 15, 2019
    Assignee: Hesai Photonics Technology Co., Ltd.
    Inventors: Shixiang Wu, Liangchen Ye, Rui Wang, Shaoqing Xiang, Yifan Li
  • Patent number: 10429495
    Abstract: A Lidar system is provided. The Lidar system comprises: a set of light sources configured to emit a plurality of light beams; a set of optical fiber elements, wherein each of the set of light sources is optically coupled to a first end of one or more optical fiber elements from the set of optical fiber elements; and at least one mounting unit comprising a structure configured to receive a second end of the set of optical fiber elements at one or more directions thereby affecting a direction of the plurality of light beams individually.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: October 1, 2019
    Assignee: HESAI PHOTONICS TECHNOLOGY CO., LTD.
    Inventors: Rui Wang, Xuezhou Zhu, Na Li, Jiasheng Li, Hongguang Wang, Shaoqing Xiang, Yifan Li
  • Patent number: 10422867
    Abstract: A Lidar system is provided. The Lidar system comprise: a light source configured to emit a multi-pulse sequence to measure a distance between the Lidar system and a location in a three-dimensional environment, and the multi-pulse sequence comprises multiple pulses having a temporal profile; a photosensitive detector configured to detect light pulses from the three-dimensional environment; and one or more processors configured to: determine a coding scheme comprising the temporal profile, wherein the coding scheme is determined dynamically based on one or more real-time conditions including an environment condition, a condition of the Lidar system or a signal environment condition; and calculate the distance based on a time of flight of a sequence of detected light pulses, wherein the time of flight is determined by determining a match between the sequence of detected light pulses and the temporal profile.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: September 24, 2019
    Assignee: HESAI PHOTONICS TECHNOLOGY CO., LTD.
    Inventors: Xuezhou Zhu, Shaoqing Xiang
  • Patent number: 10295656
    Abstract: A Lidar system is provided. The Lidar system may comprise: a plurality of light sources configured to emit a plurality of light beams, the plurality of light sources are mounted to a first mounting apparatus comprising a cooling feature; a plurality of optical fiber elements, and each of the plurality of light sources is optically coupled to an input end of one or more optical fiber elements from the plurality of optical fiber elements; and a second mounting apparatus comprising at least one mounting unit coupled to an emitting end of the plurality of optical fiber elements, and the at least one mounting unit is configured to control an output direction of the plurality of light beams individually, and a distribution pattern of the plurality of light beams emitted from the emitting end of the plurality of optical fiber elements.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: May 21, 2019
    Assignee: HESAI PHOTONICS TECHNOLOGY CO., LTD.
    Inventors: Jiasheng Li, Hongguang Wang, Shaoqing Xiang