Optics: image projectors – Temperature control – Blower
Reexamination Certificate
2006-12-26
2006-12-26
Dowling, William C. (Department: 2851)
Optics: image projectors
Temperature control
Blower
C353S060000, C353S061000
Reexamination Certificate
active
07152978
ABSTRACT:
A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.
REFERENCES:
patent: 5860719 (1999-01-01), Suzuki et al.
patent: 5951136 (1999-09-01), Furuhata et al.
patent: 6007205 (1999-12-01), Fujimori
patent: 6033077 (2000-03-01), Iwase
patent: 6111630 (2000-08-01), Watanuki et al.
patent: 6139155 (2000-10-01), Takizawa
patent: 6254238 (2001-07-01), Takamatsu
patent: 6290360 (2001-09-01), Konuma et al.
patent: 02-130542 (1990-05-01), None
patent: 05-053200 (1993-03-01), None
patent: 05105115 (1993-04-01), None
patent: 06-148594 (1994-05-01), None
patent: 07-152009 (1995-06-01), None
patent: 08-234155 (1996-09-01), None
patent: WO 96/30805 (1996-10-01), None
patent: 09-049998 (1997-02-01), None
patent: 09-133911 (1997-05-01), None
patent: 10-254062 (1998-09-01), None
Deguchi Masaharu
Fukatsu Makoto
Fuse Kenji
Hagura Shigehisa
Hoshino Takeshi
Dowling William C.
Hitachi, Ltd., and Hitachi Video and Information Systems, Inc.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
LandOfFree
Liquid crystal projector, and projection lens unit, optical... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid crystal projector, and projection lens unit, optical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal projector, and projection lens unit, optical... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3690328