# US 2021/0278510 A1 · Distributed laser radar > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0278510 A1 - Document ID: US20210278510A1 - Status: Published application - Kind: A1 - Application number: 17/313,967 - Filed: 2021-05-06 - Published: 2021-09-09 - Earliest claimed: 2018-04-03 - Assignees: Hesai Photonics Technology Co., Ltd. - Applicants: Hesai Photonics Technology Co., Ltd. - Inventors: Zhengqing PAN; Liangchen YE; Shaoqing XIANG; Yifan LI - Web page: https://patentgrep.com/patent/US20210278510A1 ## CPC - G01S 7/4818: {using optical fibres} - G01S 7/497: Means for monitoring or calibrating - G01S 7/003: {Transmission of data between radar, sonar or lidar systems and remote stations} - G01S 7/4815: {using multiple transmitters} - G01S 7/4817: {relating to scanning} - G01S 17/87: Combinations of systems using electromagnetic waves other than radio waves - G01S 17/931: of land vehicles - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES ## 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. The reflected echo is transmitted to the optical transceiver assembly by the distributed optical fiber connector assembly. ## Claims ### Claim 1 A distributed LiDAR, comprising: a central transceiver coupled with a plurality of optical scanners via a communication path, both the central transceiver and the plurality of the optical scanners being disposed on a vehicle; wherein each of the optical scanners utilizes optical signals to detect distance information of targets within a respective scanning field of view; and wherein a range of the respective scanning field of view of each of the optical scanners is adjustable according to a motion state of the vehicle. ### Claim 2 (depends on 1) The distributed LiDAR according to claim 1, wherein the central transceiver is configured to combine the respective scanning field of view of each of the optical scanners. ### Claim 3 (depends on 2) The distributed LiDAR according to claim 2, wherein the plurality of the optical scanners share a common light source. ### Claim 4 (depends on 1) The distributed LiDAR according to claim 1, wherein the communication path comprises a plurality of downlink transmission optical fibers; the distributed LiDAR further comprises a light source configured to emit detection light; the downlink transmission optical fibers are connected between the light source and the optical scanners; the detection light emitted by the light source is synchronously transmitted by the downlink transmission optical fibers to the optical scanners, and the optical scanners are configured to emit the detection light as the optical signals; and the downlink transmission optical fibers are arranged in an array, beams of light emergent from the end faces of the downlink transmission optical fibers are incident onto the optical scanners at an angle with each other to enable scanning fields of view of the optical scanner to partially overlap with each other or be immediately adjacent to each other. ### Claim 5 (depends on 1) The distributed LiDAR according to claim 1, further comprising uplink transmission optical fibers for transmitting a reflected echo received by the optical scanners to the central transceiver. ### Claim 6 (depends on 4) The distributed LiDAR according to claim 4, further comprising an optical amplifier or an optical modulator disposed on the downlink transmission optical fibers. ### Claim 7 (depends on 1) The distributed LiDAR according to claim 1, wherein each of the optical scanners comprises one of an electrostatic galvanometer, an electromagnetic galvanometer, a piezoelectric galvanometer, or an electrothermal galvanometer. ### Claim 8 (depends on 7) The distributed LiDAR according to claim 7, wherein the downlink transmission optical fibers are arranged in a one-dimension array. ### Claim 9 (depends on 7) The distributed LiDAR according to claim 7, wherein the downlink transmission optical fibers are arranged in a two-dimension array. ### Claim 10 (depends on 1) The distributed LiDAR according to claim 1, wherein each of the optical scanners has an adjustable scanning frequency. ### Claim 11 A vehicle comprising: a body; and a distributed LiDAR disposed in the body, wherein the distributed LiDAR comprises: a central transceiver coupled with a plurality of optical scanners via a communication path; wherein each of the optical scanners utilizes optical signals to detect distance information of targets within a respective scanning field of view; and wherein a range of the respective scanning field of view of each of the optical scanners is adjustable according to a motion state of the vehicle. ### Claim 12 (depends on 11) The vehicle according to claim 11, wherein the central transceiver is configured to combine the respective scanning field of view of each of the optical scanners. ### Claim 13 (depends on 12) The vehicle according to claim 12, wherein the plurality of the optical scanners share a common light source. ### Claim 14 (depends on 11) The vehicle according to claim 11, wherein the communication path comprises a plurality of downlink transmission optical fibers; the distributed LiDAR further comprises a light source configured to emit detection light; the downlink transmission optical fibers are connected between the light source and the optical scanners; the detection light emitted by the light source is synchronously transmitted by the downlink transmission optical fibers to the optical scanners, and the optical scanners are configured to emit the detection light as the optical signals; and the downlink transmission optical fibers are arranged in an array, beams of light emergent from the end faces of the downlink transmission optical fibers are incident onto the optical scanners at an angle with each other to enable scanning fields of view of the optical scanner to partially overlap with each other or be immediately adjacent to each other. ### Claim 15 (depends on 11) The vehicle according to claim 11, wherein the distributed LiDAR further comprises uplink transmission optical fibers for transmitting a reflected echo received by the optical scanners to the central transceiver. ### Claim 16 (depends on 14) The vehicle according to claim 14, wherein the distributed LiDAR further comprises an optical amplifier or an optical modulator disposed on the downlink transmission optical fibers. ### Claim 17 (depends on 11) The vehicle according to claim 11, wherein each of the optical scanners comprises one of an electrostatic galvanometer, an electromagnetic galvanometer, a piezoelectric galvanometer, or an electrothermal galvanometer. ### Claim 18 (depends on 17) The vehicle according to claim 17, wherein the downlink transmission optical fibers are arranged in a one-dimension array or a two-dimension array. ### Claim 19 (depends on 11) The vehicle according to claim 11, wherein each of the optical scanners has an adjustable scanning frequency. ### Claim 20 (depends on 12) The vehicle according to claim 12, wherein the light source is disposed at a center of gravity of a support frame of an engine compartment of the vehicle.