Optics: image projectors – Reflector – Plural
Reexamination Certificate
2006-05-09
2006-05-09
Perkey, W. B. (Department: 2851)
Optics: image projectors
Reflector
Plural
C353S020000, C353S031000, C353S037000, C353S084000, C353S090000, C349S009000
Reexamination Certificate
active
07040766
ABSTRACT:
The illumination optical system for guiding a light emitted from a light source to an object to be illuminated along an optical path includes a first reflecting mirror reflecting a part of a light which is moving in a forward direction along the optical path to move away from the light source and a second reflecting mirror reflecting a part of a light which is reflected from the first reflecting mirror and moving in a reverse direction along the optical path to approach the light source. The first reflecting mirror has an opening facing a light-entering surface of the object to be illuminated, and the second reflecting mirror has a window that allows the light emitted from the light source to pass therethrough, whereby an optical cavity is constituted by the first and second reflecting mirrors.
REFERENCES:
patent: 5098184 (1992-03-01), van den Brandt et al.
patent: 5410370 (1995-04-01), Janssen
patent: 5416514 (1995-05-01), Janssen et al.
patent: 5508738 (1996-04-01), Janssen et al.
patent: 5528318 (1996-06-01), Janssen
patent: 5532763 (1996-07-01), Janssen et al.
patent: 5548347 (1996-08-01), Melnik et al.
patent: 5597223 (1997-01-01), Watanabe et al.
patent: 5608467 (1997-03-01), Janssen et al.
patent: 5634704 (1997-06-01), Shikama et al.
patent: 5833341 (1998-11-01), Kimura et al.
patent: 5864374 (1999-01-01), Ito et al.
patent: 6208463 (2001-03-01), Hansen et al.
patent: 6356700 (2002-03-01), Strobl
patent: 6416182 (2002-07-01), Kakuda et al.
patent: 2001/0008470 (2001-07-01), Dewald
patent: 2002/0135862 (2002-09-01), Dewald
patent: 2002/0176255 (2002-11-01), Yamauchi et al.
patent: 2002/0180937 (2002-12-01), De Vaan et al.
patent: 63-121821 (1988-05-01), None
patent: 3-111806 (1991-05-01), None
patent: 4-316296 (1992-11-01), None
patent: 7-98479 (1995-04-01), None
patent: 2000-284229 (2000-10-01), None
Bierhuizen, “Single Panel Color Sequential Projectors with Polarization Recovery”, SID 02 Digest-55.1, p. 1350-1353.
Hibi Taketoshi
Okamori Shinji
Birch & Stewart Kolasch & Birch, LLP
Blackman Rochelle
Mitsubishi Denki & Kabushiki Kaisha
Perkey W. B.
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