Optical device and projector having the optical device

Details Optical device and projector having the optical device Optical device and projector having the optical device

2005-01-18

2005-01-18

Epps, Georgia (Department: 2873)

Optical: systems and elements

Lens

With support

C353S052000, C353S054000

Reexamination Certificate

active

06844993

ABSTRACT:
An optical device has: a metal cooling device (500) disposed between a liquid crystal panel (441) and a light-incident side of a cross dichroic prism (443) and having a holding surface for holding polarization plates (521, 522) attached with a polarization films (521A and522A) in a mutually spaced manner, the cooling device cooling the polarization films; a base (445) provided on the upper and lower sides of the cross dichroic prism (443) and having a cooling device attachment surface (449A) for the cooling device (500) to be attached; and a fixing member (600) provided on a light-incident side of the cross dichroic prism for locating and fixing the liquid crystal panel (441) on the light-incident side, the fixing member (600) being formed with a attachment surface (631) on which a pin (730) for mounting the liquid crystal panel (441) is formed.

REFERENCES:
patent: 5493351 (1996-02-01), Hamagishi et al.
patent: 6607277 (2003-08-01), Yokoyama et al.
patent: 6639743 (2003-10-01), Watanabe
patent: A 8-304739 (1996-11-01), None
patent: A 2003-121931 (2003-04-01), None

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