Title:
LASER EMITTING DEVICE AND RANGING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/061969
Kind Code:
A1
Abstract:
A laser emitting device (1) and a ranging device (100). The laser emitting device (1) comprises: an emission circuit (11), a self-test circuit (12), and a control circuit (13), wherein the emission circuit (11) comprises a laser emitter (111) and a driver (112), and the laser emitter (111) is configured to emit a laser pulse signal when driven by the driver (112). The self-test circuit (12) is configured to detect the emission energy or emission power of the laser pulse signal emitted by the emission circuit (11). The control circuit (13) is configured to adjust the emission power of the emission circuit (11) upon determining, according to a test result of the self-test circuit (12), that the emission energy or emission power of the laser pulse signal has changed, such that the power of the laser pulse signal emitted by the emission circuit (11) remains within a preset range; or the control circuit (13) is configured to determine, according to a test result of the self-test circuit (12), whether to turn off the emission circuit (11). The laser emitting device (1) can be used to detect the emission power of a laser, and to adjust a laser pulse signal, thereby ensuring that the emission power of laser waves remains constant in different scenarios.
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Inventors:
HUANG SENHONG (CN)
LIU XIANG (CN)
PU WENJIN (CN)
HONG XIAOPING (CN)
LIU XIANG (CN)
PU WENJIN (CN)
HONG XIAOPING (CN)
Application Number:
PCT/CN2018/108151
Publication Date:
April 02, 2020
Filing Date:
September 27, 2018
Export Citation:
Assignee:
SZ DJI TECHNOLOGY CO LTD (CN)
International Classes:
G01S17/08; G01S7/484; G01S7/487; H01S3/09
Foreign References:
| CN206211259U | 2017-05-31 | |||
| CN206211259U | 2017-05-31 | |||
| CN108513618A | 2018-09-07 | |||
| CN108513618A | 2018-09-07 | |||
| CN101865997A | 2010-10-20 | |||
| CN108781116A | 2018-11-09 | |||
| CN1789947A | 2006-06-21 | |||
| CN206349978U | 2017-07-21 | |||
| CN105606213A | 2016-05-25 | |||
| CN103499819A | 2014-01-08 | |||
| CN105319558A | 2016-02-10 | |||
| US20050061957A1 | 2005-03-24 |
Attorney, Agent or Firm:
P. C. & ASSOCIATES (CN)
Download PDF:
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