Title:
LASER LIGHT OUTPUT CONTROL DEVICE AND LASER SCANNING DISPLAY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/163656
Kind Code:
A1
Abstract:
The purpose of the present invention is to prevent stray light from reducing display quality. Provided is a laser light output control device 101 that provides feedback on the intensity of the laser light emitted by a light source 11 to thereby adjust the control value used by the light source 11 to display an image M, wherein: an illuminance determination unit 21 acquires an illuminance signal that allows estimation of the illuminance in the ambient environment or acquires a request luminance signal that externally controls the luminance of the image M, and determines the brightness of the ambient environment; an inspection time adjustment unit 22 shortens a period Q during which the lights source 11 emits inspection light Cd when the illuminance determination unit 21 determines that there is a dark ambient environment, compared to when there is a bright ambient environment; and a light source control unit 23 acquires an integrated value Sd of the intensity of the inspection light Cd emitted by the light source 11 and adjusts a control value for driving the light source 11.
Inventors:
HADA MAKOTO
Application Number:
PCT/JP2019/005485
Publication Date:
August 29, 2019
Filing Date:
February 15, 2019
Export Citation:
Assignee:
NIPPON SEIKI CO LTD (JP)
International Classes:
G02B27/01; G02B26/10; G09G3/02; H04N5/74
Foreign References:
| JP2016099561A | 2016-05-30 | |||
| JP2016006496A | 2016-01-14 | |||
| US20130293591A1 | 2013-11-07 |
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