Optics: image projectors – Temperature control
Reexamination Certificate
2006-10-10
2006-10-10
Mahoney, Christopher (Department: 2851)
Optics: image projectors
Temperature control
C353S119000, C349S058000
Reexamination Certificate
active
07118222
ABSTRACT:
An optical device (24) includes: three optical modulators (24A) for modulating respective color lights in accordance with image information; a cross dichroic prism (244) for combining the respective color lights modulated by the optical modulators (24A); a base (247) made of heat-conductive material and fixed to upper and lower faces of the cross dichroic prism (244); an irradiation-side polarization plate (243) having polarization films (243A2and243B2) as optical conversion films for converting an optical property of a light beam irradiated by the optical modulators (24A) and substrates (243A1and243B1) made of heat-conductive material and provided with the polarization films (243A2and243B2) attached thereto; and an irradiation-side retaining plate (246) made of heat-conductive material for supporting and fixing the irradiation-side polarization plate (243). The irradiation-side retaining plate (246) is fixed to a lateral face of the base (247).
REFERENCES:
patent: 6844993 (2005-01-01), Fujimori et al.
patent: 6906840 (2005-06-01), Fujimori et al.
patent: A 2000-221588 (2000-08-01), None
patent: A 2001-132694 (2001-05-01), None
patent: A 2002-072162 (2002-03-01), None
patent: A 2003-121931 (2003-04-01), None
patent: A 2003-121937 (2003-04-01), None
Mahoney Christopher
Seiko Epson Corporation
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