Optics: image projectors – Composite projected image – Multicolor picture
Reexamination Certificate
2007-06-06
2008-11-11
Koval, Melissa Jan (Department: 2862)
Optics: image projectors
Composite projected image
Multicolor picture
C353S033000, C353S034000, C353S038000, C353S099000, C353S102000, C349S005000, C349S007000, C349S008000, C348S744000
Reexamination Certificate
active
07448755
ABSTRACT:
A three-panel projection display apparatus displays a color image by separating light emitted from a light source into lights of three primaries, i.e., red, green, and blue, with dichroic mirrors, by irradiating liquid crystal light valves with the respective separated lights, by combining the lights modulated by the respective liquid crystal light valves with a cross dichroic prism, and by projecting the combined light through a single projection lens onto a screen. The lengths of the light paths for the separated blue and green lights are equal to each other. The distance between a condenser lens and the liquid crystal light valve in the blue light path is shorter than the distance between a condenser lens and the liquid crystal light valve in the green light path.
REFERENCES:
patent: 6260972 (2001-07-01), Robinson et al.
patent: 6457829 (2002-10-01), Nakazawa et al.
patent: 2004/0080938 (2004-04-01), Holman et al.
patent: 08-201756 (1996-08-01), None
patent: 10-115799 (1998-05-01), None
patent: 10-148896 (1998-06-01), None
patent: 10-171045 (1998-06-01), None
patent: 2000-267045 (2000-09-01), None
patent: 2001-066695 (2001-03-01), None
patent: 2002-90878 (2002-03-01), None
patent: 2002-90885 (2002-03-01), None
patent: 2004-126184 (2004-04-01), None
Japanese Office Action dated Apr. 16, 2008 with Partial English Translation.
Japanese Office Action dated Jul. 2, 2008 with partial English translation.
Koval Melissa Jan
McGinn IP Law Group PLLC
NEC Viewtechnology Ltd.
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