公开(公告)号：US20230022688A1

公开(公告)日：2023-01-26

申请号：US17958427

申请日：2022-10-02

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Xiaoping HONG ,  Xiao HUANG ,  Liangliang MA ,  Guoguang ZHENG

IPC: G01S17/10 ,  G01S7/481 ,  G01S7/4863

Abstract: A laser distance measuring device, a laser distance measuring method, and a movable platform are provided. The laser distance measuring device includes a transmitting module and a receiving module. The transmitting module includes a transmitting circuit and an optical transmitting system, the transmitting circuit is configured to transmit laser pulses, and the optical transmitting system is configured to disperse the laser pulse, to make the laser pulses cover a designated field-of-view area. The receiving module includes a receiving circuit and an optical receiving system, the receiving circuit includes an APD array operating in a linear mode and is configured to receive at least some of returning laser pulses upon the laser pulses being reflected back by a measured object, and convert the at least some of the returning laser pulses into an electrical signal.

公开(公告)号：US20210333362A1

公开(公告)日：2021-10-28

申请号：US17371870

申请日：2021-07-09

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Senhong HUANG ,  Liangliang MA ,  Xiang LIU

IPC: G01S7/484 ,  G01S7/487 ,  G01S17/10 ,  H01S3/11

Abstract: A light emitting device includes at least two laser emission circuits, each of the laser emission circuits including a power supply, a laser emitter, an energy storage circuit, and a control circuit; in each of the laser emission circuits, the control circuit being configured to turn on the energy storage circuit and the power supply in the laser emission circuit in a first period of time for the power supply to store energy in the energy storage circuit; the control circuit further being configured to turn on the laser emitter and the energy storage circuit in the laser emission circuit in a second period of time for the energy storage circuit to supply power to the laser emitter for the laser emitter to emit a light pulse signal; and two or more laser emission circuits sharing the power supply.