公开(公告)号：US12255437B2

公开(公告)日：2025-03-18

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.

公开(公告)号：US11768276B2

公开(公告)日：2023-09-26

申请号：US17843964

申请日：2022-06-18

Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.

Inventor： Junlin Chen ,  Wenbin Rui

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. In a one-driving-multiple emitting circuit, in an energy storage stage, a power supply stores energy for an energy storage element of the energy storage circuit, and a laser diode does not emit light. In an energy transfer stage, by setting a floating-ground diode D0, an energy charging current passes through an energy storage capacitor C2, the floating-ground diode D0 and the ground to form a loop. In an energy release stage, when the energy release switch element is in an off state, the energy release circuit where the energy release switch element is located is not the lowest impedance loop. A laser diode in the energy release circuit where the energy release switch element is located does not emit light.

公开(公告)号：US20220317251A1

公开(公告)日：2022-10-06

申请号：US17843964

申请日：2022-06-18

Applicant: SUTENG INNOVATION TECHNOLOGY CO., LTD.

Inventor： Junlin Chen ,  Wenbin Rui

IPC: G01S7/484 ,  H01S5/042

Abstract: The present application discloses a laser emitting circuit and a LiDAR. In a one-driving-multiple emitting circuit, in an energy storage stage, a power supply stores energy for an energy storage element of the energy storage circuit, and a laser diode does not emit light. In an energy transfer stage, by setting a floating-ground diode D0, an energy charging current passes through an energy storage capacitor C2, the floating-ground diode D0 and the ground to form a loop. In an energy release stage, when the energy release switch element is in an off state, the energy release circuit where the energy release switch element is located is not the lowest impedance loop. A laser diode in the energy release circuit where the energy release switch element is located does not emit light.