Title:
LASER PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/252888
Kind Code:
A1
Abstract:
A laser projection device comprising: a driving chip (01), a voltage output circuit (02), and a light source switch circuit (03). The light source switch circuit (03) is used to connect a laser assembly. The driving chip (01) is used to receive a current control signal corresponding to the laser assembly, and provide a driving current corresponding to the laser assembly, to the light source switch circuit (03). The driving chip (01) is further used to receive an enable signal corresponding to the laser assembly, and control, on the basis of the enable signal, a time length for which the light source switch circuit (03) drives, by means of a switch control signal, the corresponding laser assembly to emit light. The voltage output circuit (02) is used to provide to the light source switch circuit (03) a rated voltage for the laser assembly. When the switch control signal is at a valid potential the light source switch circuit (03) is closed, and at the rated voltage, the light source switch circuit (03) provides the driving current corresponding to the laser assembly to the laser assembly connected thereto,. Thus, a monochromatic laser is independently controlled.
Inventors:
CUI RONGRONG (CN)
GUO DABO (CN)
GUO DABO (CN)
Application Number:
PCT/CN2019/101759
Publication Date:
December 24, 2020
Filing Date:
August 21, 2019
Export Citation:
Assignee:
HISENSE LASER DISPLAY CO LTD (CN)
International Classes:
G03B21/20; H04N9/31
Foreign References:
| CN101600120A | 2009-12-09 | |||
| CN104796650A | 2015-07-22 | |||
| CN106791742A | 2017-05-31 | |||
| CN102576978A | 2012-07-11 | |||
| US20180288377A1 | 2018-10-04 |
Attorney, Agent or Firm:
LEADER PATENT & TRADEMARK FIRM (CN)
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