Title:
LASER PROJECTION MODULE AND CONTROL METHOD THEREFOR, AND DEPTH IMAGE ACQUISITION APPARATUS AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/038067
Kind Code:
A1
Abstract:
A laser projection module (100) and a control method therefor, and a depth image acquisition apparatus (300) and an electronic device (800). The laser projection module (100) comprises a light source (10), a diffuser (20), and a photodetector (63). The light source (10) is used to emit laser. The diffuser (20) is used to diffuse the laser. The photodetector (63) is used to receive the laser reflected back by the diffuser (20) to form a photodetection electrical signal, and the driving current of the light source (10) is adjusted based on the photodetection electrical signal.
Inventors:
ZHANG XUEYONG (CN)
Application Number:
PCT/CN2019/090082
Publication Date:
February 27, 2020
Filing Date:
June 05, 2019
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
G01S7/481
Foreign References:
| CN108828562A | 2018-11-16 | |||
| CN108646426A | 2018-10-12 | |||
| CN109151271A | 2019-01-04 | |||
| CN108344377A | 2018-07-31 | |||
| CN108344377A | 2018-07-31 | |||
| CN107608167A | 2018-01-19 | |||
| CN107167996A | 2017-09-15 | |||
| EP2808708A1 | 2014-12-03 | |||
| CN108375864A | 2018-08-07 |
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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