Title:
LASER PROJECTION DISPLAY DEVICE AND METHOD FOR DRIVING LASER BEAM SOURCE
Document Type and Number:
WIPO Patent Application WO/2021/010023
Kind Code:
A1
Abstract:
A laser projection display device 1 is provided with: a laser beam source 5 that emits a plurality of colors of laser beams; a laser beam source driving unit 4 that drives the laser beam source; a beam intensity detector 10 that detects intensities of the laser beams; an overshoot current determination unit 28 that determines a reference overshoot current for improving rising responses of the laser beams; and an overshoot current application unit 27 that applies an overshoot current to an image signal on the basis of the reference overshoot current. The overshoot current determination unit 28 changes the overshoot current and supplies the changed overshoot current to the laser beam source driving unit 4 so as to cause the laser beam source to emit a laser beam, and determines the reference overshoot current so that the beam intensity detected at that time can be a target value. Thus, it is possible to prevent changes of the rising responses of the beam intensities of the laser beams caused by a change of an ambient temperature or deterioration over time.
Inventors:
OGI YUYA (JP)
ONOE SHINSUKE (JP)
NONAKA TOMOYUKI (JP)
ONOE SHINSUKE (JP)
NONAKA TOMOYUKI (JP)
Application Number:
PCT/JP2020/020438
Publication Date:
January 21, 2021
Filing Date:
May 25, 2020
Export Citation:
Assignee:
HITACHI LG DATA STORAGE INC (JP)
International Classes:
G09G3/02; G02B26/08; G02B26/10; G09G3/34; H01S5/0683
Domestic Patent References:
| WO2018096949A1 | 2018-05-31 |
Foreign References:
| JP2011216843A | 2011-10-27 | |||
| JP2017181642A | 2017-10-05 | |||
| US20130336663A1 | 2013-12-19 |
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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