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Title:
FLUORESCENT LIGHT SOURCE DEVICE
Document Type and Number:
Japanese Patent JP2017073245
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a fluorescent light source device which can radiate fluorescent light with high efficiency, which can configure a small-sized device with a simple structure, and which can acquire high utilization efficiency of light regarding the fluorescent light when it is used for a projector device.SOLUTION: A fluorescent light source device includes: a plurality of excitation light sources for emitting excitation light; a fluorescent plate for radiating fluorescent light by receiving the excitation light; and an excitation light incident optical system for making incident the excitation light from each of the plurality of excitation light sources in a fluorescent light emission surface of the fluorescent plate. The excitation light incident optical system includes a mirror member having a plurality of excitation light reflection surfaces for converting each of the travelling directions of the excitation light emitted from each of the plurality of excitation light sources. The excitation light reflected on the plurality of excitation light reflection surfaces is diverging light.SELECTED DRAWING: Figure 1

Inventors:
INOUE MASAKI
OSAWA OSAMU
Application Number:
JP2015198280A
Publication Date:
April 13, 2017
Filing Date:
October 06, 2015
Export Citation:
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Assignee:
USHIO ELECTRIC INC
International Classes:
F21S2/00; F21V5/04; F21V7/09; F21V7/22; F21V9/16; F21V13/00; G02B19/00; G03B21/00; G03B21/14; H01S5/022
Domestic Patent References:
JP2012118302A2012-06-21
JP2014041331A2014-03-06
JP2011107371A2011-06-02
JP2012027052A2012-02-09
Foreign References:
WO2012066654A12012-05-24
WO2015122075A12015-08-20
Attorney, Agent or Firm:
Masahiko Oi