Light source device, light source unit and projector...

Details Light source device, light source unit and projector... Light source device, light source unit and projector...

2011-02-22

2011-02-22

Luu, Thanh X (Department: 2878)

Optics: image projectors

Reflector

C362S296010

Reexamination Certificate

active

07891823

ABSTRACT:
There is provided a light source device which emits a bundle of rays with less diffused light and which is suitable for a projector, the light source device including a reflector whose inner surface is made to constitute a reflection surface, a lamp made up of a spherical light emitting portion and a sealing portion which is formed in such a manner as to pass through a center of the light emitting portion to project from the light emitting portion, and a conical mirror whose outer surface is made to constitute a reflection surface, which is formed into a cone shape and which covers a front sealing portion of the sealing portion of the lamp, wherein the light emitting portion of the lamp is disposed in a position where a focal point of the reflector resides.

REFERENCES:
patent: 5911489 (1999-06-01), Watanabe
patent: 2003/0198050 (2003-10-01), Yamazaki et al.
patent: 2004/0032739 (2004-02-01), Johanson
patent: 2002-303818 (2002-10-01), None
patent: 2004-206957 (2004-07-01), None
patent: 2006-106527 (2006-04-01), None
Japanese Office Action dated Nov. 20, 2008, and English translation thereof issued in counterpart Japanese Application No. 2006-327763.
Chinese Office Action dated Dec. 26, 2008 (5 pages), and English translation thereof (5 pages) issued in counterpart Chinese Application No. 2007101964644.

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