Optics: image projectors – Composite projected image – Multicolor picture
Reexamination Certificate
2007-05-29
2007-05-29
Gray, David (Department: 2851)
Optics: image projectors
Composite projected image
Multicolor picture
C353S033000, C353S038000, C353S081000
Reexamination Certificate
active
10213719
ABSTRACT:
An image display optical system according to the present invention has an illumination optical system, a plurality of image display elements, a color separation/combination optical system, and a projection optical system. The image display optical system also has a light guide element which reflects illumination light from the illumination optical system with a reflectivity of substantially 100% to guide the reflected light to the color separation/combination optical system and transmits image light from the color separation/combination optical system to the projection optical system.Each optical path of the illumination light and each optical path of the image light are different from each other in the light guide element and the color separation/combination optical system. The projection optical system is an eccentric optical system.With the configuration, the use efficiency of light can be enhanced to obtain bright and high-definition display images.
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Chinese Office Action dated Sep. 17, 2004 regarding Chinese Patent Application No. 021285764 with English Translation.
English translation of the Abstract and Description of Drawing of JPLO H10-319344.
Abe Masayuki
Kodama Hiroyuki
Okuyama Atsushi
Canon Kabushiki Kaisha
Cruz Magda
Gray David
Morgan & Finnegan L.L.P.
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