公开(公告)号：US20230366989A1

公开(公告)日：2023-11-16

申请号：US18226254

申请日：2023-07-26

Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.

Inventor： Junlin CHEN

IPC: G01S7/484 ,  H01S5/042 ,  G01S7/481

CPC classification number: G01S7/484 ,  H01S5/0428 ,  G01S7/4814

Abstract: The present application discloses a laser emitting circuit and a LiDAR. The laser emitting circuit includes an energy charging circuit, an energy transfer circuit, and a plurality of energy release circuits. The plurality of energy release circuits are connected in parallel. The energy charging circuit is connected to the energy transfer circuit to store electrical energy. The energy transfer circuit is connected to the energy charging circuit and the plurality of energy release circuits to transfer the electrical energy stored in the energy charging circuit to the energy transfer circuit. The energy transfer circuit includes an energy storage capacitor and a floating-ground diode. Each energy release circuit is configured to drive a laser diode to emit light by using the electrical energy stored in the energy transfer circuit, and the energy release circuit includes an energy release switch element, the laser diode, and a clamping diode.

公开(公告)号：US20220239063A1

公开(公告)日：2022-07-28

申请号：US17721319

申请日：2022-04-14

Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.

Inventor： Junlin CHEN ,  Wenbin RUI

IPC: H01S5/042 ,  G01S7/484 ,  G01S17/10 ,  H02J7/34

Abstract: An embodiment of this application discloses a laser emitting circuit and a LiDAR, and belongs to the field of the LiDAR. The structure of the laser emitting circuit is changed so that for the laser emitting circuit in an energy transfer stage, the energy transfer current from an energy storage element does not pass through a laser diode, and the laser diode is in a reverse-biased state relative to the energy transfer current. Therefore, the parasitic capacitance of an energy releasing switch element does not cause the laser diode to emit light in advance during an energy transfer charging process, which prevents the laser diode from emitting light at an unanticipated time, thereby solving the problem of laser leakage.