Optics: image projectors – Composite projected image – Multicolor picture
Reexamination Certificate
2011-08-30
2011-08-30
Sohn, Seung C (Department: 2878)
Optics: image projectors
Composite projected image
Multicolor picture
C353S034000, C349S010000, C349S093000, C359S634000
Reexamination Certificate
active
08007112
ABSTRACT:
An image display apparatus includes a light source, a color separation unit configured to separate light from the light source into colored light beams, liquid crystal display devices each configured to modulate a corresponding one of the colored light beams in accordance with an image signal, light-shielding members each configured to block light that enters an area outside an effective display area of a corresponding one of the liquid crystal display devices, a color combination unit configured to combine the colored light beams that have been modulated by the liquid crystal display devices, and a projection unit configured to project light produced by combining the colored light beams with the color combination unit, wherein the liquid crystal display devices are fixed to a heatsink, and wherein the light-shielding members each include a base member fixed to the heatsink and a mask member detachably mounted on the base member.
REFERENCES:
patent: 5245449 (1993-09-01), Ooi et al.
patent: 5481320 (1996-01-01), Konuma et al.
patent: 6062694 (2000-05-01), Oikawa et al.
patent: 6227670 (2001-05-01), Numazaki et al.
patent: 11-305674 (1999-11-01), None
Canon Kabushiki Kaisha
Canon U.S.A. Inc. I.P. Division
Sohn Seung C
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