Optics: image projectors – Particular condenser
Reexamination Certificate
2006-11-14
2006-11-14
Koval, Melissa Jan (Department: 2851)
Optics: image projectors
Particular condenser
C353S030000, C353S094000, C349S005000, C348S798000
Reexamination Certificate
active
07134757
ABSTRACT:
The present invention provides a small projection type display apparatus capable of suppressing an optical path of incident light and an optical path of output light in a reflection type light valve from being overlapped with each other and obtaining a projected image of high quality; a rear projector and a multi-vision system using the same. The projection type display apparatus is composed of an illumination optical system2for collecting light radiated from a light source1to form illumination light, a reflection type light valve6for reflecting the illumination light to output modulated light forming an optical image, a projection lens system7for projecting an optical image formed by the reflection type light valve, and a lens element5with a positive power. The lens element5is composed of one plano-convex lens, and is placed between the reflection type light valve and the projection lens system with a convex surface directed to the projection lens system, in such a manner that the illumination light passes through the lens element to illuminate the reflection type light valve, and the modulated light output from the reflection type light valve passes through the lens element to be incident upon the projection lens system.
REFERENCES:
patent: 4420219 (1983-12-01), Muchel
patent: 6076931 (2000-06-01), Bone et al.
patent: 6118501 (2000-09-01), Ohzawa
patent: 6129437 (2000-10-01), Koga et al.
patent: 6142633 (2000-11-01), Takahara et al.
patent: 6181386 (2001-01-01), Knox
patent: 6193376 (2001-02-01), Hayashi et al.
patent: 6231192 (2001-05-01), Konno et al.
patent: 6439726 (2002-08-01), Piehler
patent: 6542204 (2003-04-01), Ohzawa et al.
patent: 6652105 (2003-11-01), Peterson et al.
patent: 6781563 (2004-08-01), Nishio et al.
patent: 2004/0201824 (2004-10-01), Wada et al.
patent: 10/232379 (1998-09-01), None
patent: 10/301057 (1998-11-01), None
patent: 10/307277 (1998-11-01), None
patent: 11/249069 (1999-11-01), None
patent: 2000-39585 (2000-04-01), None
patent: 2000-98272 (2000-04-01), None
patent: 2000-221446 (2000-08-01), None
patent: 2000-122805 (2002-04-01), None
patent: 2002-521704 (2002-07-01), None
patent: 2002-250894 (2002-09-01), None
patent: 2002-296539 (2002-10-01), None
patent: WO98/29773 (1998-07-01), None
patent: WO99/26103 (1999-05-01), None
Toyota et al., “Fabrication of Microcone Array for Antireflection Structured Surface Using Metal Dotted Pattern”, Jpn J. Appl. Phys., vol. 40, 2001, pp. L747-L749.
Fushimi Yoshimasa
Masumoto Yoshihiro
Wada Mitsuhiro
Hamre Schumann Mueller & Larson P.C.
Koval Melissa Jan
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Projection type display apparatus, rear projection, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Projection type display apparatus, rear projection, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection type display apparatus, rear projection, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3700397