Optical: systems and elements – Compound lens system – With relay
Reexamination Certificate
2006-03-07
2006-03-07
Robinson, Mark A. (Department: 2872)
Optical: systems and elements
Compound lens system
With relay
C359S433000, C353S099000
Reexamination Certificate
active
07009765
ABSTRACT:
The wide angle lens system described herein allows projection devices (e.g., rear projection display devices) to be more compact than would otherwise be possible. The lens system includes a wide angle lens stage and a relay lens stage. When operating as a projection device, the relay lens stage projects a distorted intermediate image to the wide angle lens stage, which projects the image for display. The distortion cause by the relay lens stage compensates (i.e., is approximately equal and opposite) for the distortion caused by the wide angle stage. The distortion can be the image shape and/or the focal plane. When operating as a taking device, the wide angle stage provides a distorted image to the relay lens stage, which compensates for the distortion and provide a less distorted, or even non-distorted image, for capture.
REFERENCES:
patent: 4674836 (1987-06-01), Yata et al.
patent: 4729631 (1988-03-01), Takahashi et al.
patent: 4880292 (1989-11-01), Kageyama et al.
patent: 4936657 (1990-06-01), Tejima et al.
patent: 5100222 (1992-03-01), Minoura et al.
patent: 5302983 (1994-04-01), Sato et al.
patent: 5422691 (1995-06-01), Ninomiya et al.
patent: 5442413 (1995-08-01), Tejima et al.
patent: 5442484 (1995-08-01), Shikawa
patent: 5489940 (1996-02-01), Richardson et al.
patent: 5495306 (1996-02-01), Shibazaki
patent: 5710668 (1998-01-01), Gohman et al.
patent: 5716118 (1998-02-01), Sato et al.
patent: 5724195 (1998-03-01), Enomoto et al.
patent: 5760973 (1998-06-01), Kawamura
patent: 5796528 (1998-08-01), Mihara
patent: 5805359 (1998-09-01), Yamanashi
patent: 5820240 (1998-10-01), Ohzawa
patent: 5833339 (1998-11-01), Sarayeddine
patent: 5870234 (1999-02-01), Ebbesmeier nee Schitthof
patent: 5923479 (1999-07-01), Nagata
patent: 5978051 (1999-11-01), Gohman et al.
patent: 5999332 (1999-12-01), Ohno
patent: 6016229 (2000-01-01), Suzuki
patent: 6018425 (2000-01-01), Nakabayashi et al.
patent: 6038085 (2000-03-01), Nakazawa
patent: 6046859 (2000-04-01), Raj
patent: 6053615 (2000-04-01), Peterson et al.
patent: 6081380 (2000-06-01), Ohshima et al.
patent: 6088172 (2000-07-01), Sato
patent: 6111701 (2000-08-01), Brown
patent: 6123425 (2000-09-01), Ohzawa
patent: 6137638 (2000-10-01), Yamagishi et al.
patent: 6147812 (2000-11-01), Narimatsu et al.
patent: 6201647 (2001-03-01), Ohzawa
patent: 6236511 (2001-05-01), Brown
patent: 6273338 (2001-08-01), White
patent: 6299313 (2001-10-01), Hirata et al.
patent: 6301058 (2001-10-01), Nagahara
patent: 6353509 (2002-03-01), Nakazawa
patent: 6366400 (2002-04-01), Ohzawa
patent: 6384987 (2002-05-01), Sensui
patent: 6396641 (2002-05-01), Hirata et al.
patent: 6406150 (2002-06-01), Burstyn
patent: 6407860 (2002-06-01), Funazaki et al.
patent: 6416181 (2002-07-01), Kessler et al.
patent: 6419365 (2002-07-01), Potekev et al.
patent: 6485145 (2002-11-01), Cotton et al.
patent: 6513935 (2003-02-01), Ogawa
patent: 6561649 (2003-05-01), Burstyn
patent: 6624952 (2003-09-01), Kuwa et al.
patent: 6768594 (2004-07-01), Imafuku et al.
patent: 2002/0008853 (2002-01-01), Sunaga
patent: 2002/0044263 (2002-04-01), Takeuchi
patent: 2003/0025885 (2003-02-01), Cotton et al.
patent: 2003/0231261 (2003-12-01), Bassi et al.
patent: 2004/0001254 (2004-01-01), Shimizu
patent: 2989947 (1993-05-01), None
H. Kanayama et al., “A New LC Rear-Projection Display Based on The Aspherical Mirror Projection System,” IDW, 2000, pp. 1041-1044, SANYO Electric Co., Ltd., Osaka, Japan.
J. Ouellette, “Digital Displays with Micromirror Devices,” American Institute of Physics, Jun. 1997, pp. 9-11.
J. Shinozaki, et al., 15.3: A 50-in. Ultra-Slim Liquid-Crystal Rear Projector, SID 92 Digest, 1992, pp. 273-276, Seiko Epson Corp., Tokyo, Japan.
Alleman Hall McCoy Russell & Tuttle LLP
InFocus Corporation
Robinson Mark A.
LandOfFree
Wide angle lens system having a distorted intermediate image does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wide angle lens system having a distorted intermediate image, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wide angle lens system having a distorted intermediate image will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3527874