Title:
LIGHT SOURCE DEVICE AND PROJECTION-TYPE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2016153878
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a small size light source device with high brightness capable of largely improving the output of blue light.SOLUTION: The light source device includes: a solid light source; a dichroic mirror that reflects a blue excitation ray output from the solid light source; a phase difference plate on which the excitation ray reflected by the dichroic mirror incident; a fluorescent plate having a fluorescent area which emits fluorescent light being irradiated by the excitation ray reflected by the dichroic mirror and transmitting through the phase difference plate and a reflection area for reflecting the excitation ray, which are formed thereon; and plural condenser lenses which are disposed between the phase difference plate and the fluorescent plate for condensing the excitation ray and the fluorescent light. In the plural condenser lenses, at least the condenser lens closest to the fluorescent plate is a lens formed of a low thermal expansion glass material linear expansion coefficient of which is 32.5×10or less.SELECTED DRAWING: Figure 1
Inventors:
TANAKA TAKAAKI
OKUDA TSUNEHIRO
OKUDA TSUNEHIRO
Application Number:
JP2016002205A
Publication Date:
August 25, 2016
Filing Date:
January 08, 2016
Export Citation:
Assignee:
PANASONIC IP MAN CORP
International Classes:
G03B21/14; F21S2/00; F21V5/00; F21V7/09; F21V7/22; F21V9/14; F21V9/16; F21V9/40; F21V13/00; G02B5/30; G02B19/00; G03B21/00; H04N9/31
Domestic Patent References:
| JP2013250494A | 2013-12-12 | |||
| JP2011243374A | 2011-12-01 | |||
| JP2007163726A | 2007-06-28 |
Foreign References:
| WO2014171135A1 | 2014-10-23 | |||
| WO2012039331A1 | 2012-03-29 |
Attorney, Agent or Firm:
Kenji Kamada
Hiroo Maeda
Hiroo Maeda
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