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Patent Searching and Data


Title:
LIGHT SOURCE DEVICE AND LIGHT PROJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/049589
Kind Code:
A1
Abstract:
Provided are a light source device capable of controlling the output of each laser light source smoothly while suppressing the occurrence of unevenness in light distribution, and a light projection device using the same. According to the present invention, the light source device is provided with: a laser light source; a wavelength conversion member; an optical deflector for scanning a laser beam emitted from the laser light source on an incident surface of the wavelength conversion member; and an optical system for forming a plurality of beam spots on the incident surface of the wavelength conversion member by a plurality of laser beams respectively emitted from the laser light source so as to be in parallel in the scanning direction and spaced apart from each other. In addition, the light source device is provided with: a position detector that receives a plurality of laser beams specularly reflected from the incident surface of the wavelength conversion member with respect to all scanning ranges on the incident surface, and outputs a detection signal corresponding to the received light position and the received light amount; and a controller that controls the laser light source on the basis of the detection signal from the position detector.

Inventors:
MORIMOTO Kiyoshi
MURAKAMI Kimihiro
ASO Junya
UENO Hirotaka
KOGA Toshihiro
Application Number:
JP2018/029717
Publication Date:
March 14, 2019
Filing Date:
August 08, 2018
Export Citation:
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Assignee:
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. (1-61, Shiromi 2-chome Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
International Classes:
H01S5/022; F21S2/00; H01S5/0683; F21Y115/30
Domestic Patent References:
WO2016157765A12016-10-06
Foreign References:
JP2016507136A2016-03-07
JP2011086432A2011-04-28
JP2016088425A2016-05-23
Attorney, Agent or Firm:
KAMATA Kenji et al. (1-61, Shiromi 2-chome, Chuo-ku, Osaka-sh, Osaka 07, 〒5406207, JP)
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