LIGHT SOURCE DEVICE AND PROJECTOR

PROBLEM TO BE SOLVED: To provide a light source device capable of reducing in size while ensuring high reliability, and further to provide a projector.SOLUTION: A light source device 2 according to the present invention comprises: a laser light source 9 for emitting excitation light; a phosphor whee...

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Bibliographische Detailangaben
1. Verfasser:	YANAI HIROAKI
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM BLASTING CINEMATOGRAPHY ELECTROGRAPHY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING HOLOGRAPHY INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES PHOTOGRAPHY PHYSICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a light source device capable of reducing in size while ensuring high reliability, and further to provide a projector.SOLUTION: A light source device 2 according to the present invention comprises: a laser light source 9 for emitting excitation light; a phosphor wheel 12 for reflecting the excitation light and fluorescent light while transmitting a part of the excitation light and receiving the excitation light so as to emit the fluorescent light; a dichroic mirror 10 disposed on one optical path of the excitation light between the laser light source 9 and the phosphor wheel 12; and a quarter wavelength plate 11 disposed on other optical path of the excitation light between the phosphor wheel 12 and the dichroic mirror 10. The dichroic mirror 10 has polarization separation characteristics for transmitting a first polarization component of the excitation light passing through a forward optical path while reflecting a second polarization component of the excitation light passing through a return optical path and the fluorescent light.