LIGHT SOURCE DEVICE AND PROJECTION TYPE DISPLAY DEVICE

PROBLEM TO BE SOLVED: To obtain a light source device which suppresses the formation of an illumination luminous flux at a high magnification near the optical axis of a parabolic mirror and is good in light utilization efficiency with a simple constitution. SOLUTION: The light source device which co...

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Bibliographische Detailangaben
Hauptverfasser:	UTAKOJI TAKESHI, SHIKAMA SHINSUKE
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 CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHOTOGRAPHY PHYSICS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To obtain a light source device which suppresses the formation of an illumination luminous flux at a high magnification near the optical axis of a parabolic mirror and is good in light utilization efficiency with a simple constitution. SOLUTION: The light source device which comprises the parabolic mirror and a light source arranged at the focus of the parabolic mirror and outputs the light emitted from the light source and reflected by the parabolic mirror via a coupling optical system has a plane mirror which is arranged between the light source and the coupling optical system and reflects the light toward the parabolic mirror.