High efficiency viewing screen

Details High efficiency viewing screen High efficiency viewing screen

2005-08-23

2005-08-23

Fuller, Rodney (Department: 2851)

Optical: systems and elements

Projection screen

Rear projection screen

C359S449000, C359S457000, C359S437000, C359S506000

Reexamination Certificate

active

06934080

ABSTRACT:
A low-scatter polarization-preserving multilayer viewing screen. A substrate D, preferably a volume diffuser, for increasing the divergence of information-coded-light while preserving its polarization sense A as it passes therethrough has a discrimination of at least 2:1 within a viewing zone. An absorbing polarizer on one or both sides of D and aligned to pass polarization state A. In one embodiment, there is provided a polarization-state phase-shift layer for modifying the polarization state of forward-scatter and/or back-scatter that total internally reflects within the viewing screen into the state opposite of A. The phase-shift layer being located at any position between the polarizer and an outermost surface of the viewing screen through which said information-coded light passes.

REFERENCES:
patent: 1666808 (1928-04-01), Buchner
patent: 1942841 (1934-01-01), Shimizu
patent: 2180113 (1939-11-01), Land
patent: 2287556 (1942-06-01), Land
patent: 2362573 (1944-11-01), MacNeille
patent: 2364369 (1944-12-01), Jelley et al.
patent: 2378252 (1945-06-01), Staehle et al.
patent: 2380241 (1945-07-01), Jelley et al.
patent: 3262359 (1966-07-01), Carpenter
patent: 3279314 (1966-10-01), Miller
patent: 3437405 (1969-04-01), Northrop
patent: 3712707 (1973-01-01), Henkes, Jr.
patent: 3840695 (1974-10-01), Fischer
patent: 3909111 (1975-09-01), Meyerhofer
patent: 4035068 (1977-07-01), Rawson
patent: 4153654 (1979-05-01), Maffitt et al.
patent: 4155630 (1979-05-01), Ih
patent: 4174874 (1979-11-01), Lee
patent: 4340275 (1982-07-01), Henkes
patent: 4373065 (1983-02-01), Prest, Jr.
patent: 4536063 (1985-08-01), Southwell
patent: 4697407 (1987-10-01), Wasserman
patent: 5161041 (1992-11-01), Abileah et al.
patent: 5272473 (1993-12-01), Thompson et al.
patent: 5481385 (1996-01-01), Zimmerman et al.
patent: 5609939 (1997-03-01), Petersen et al.
patent: 5629784 (1997-05-01), Abileah et al.
patent: 5666174 (1997-09-01), Cupolo, III
patent: 5751388 (1998-05-01), Larson
patent: 5889615 (1999-03-01), Dreyer et al.
patent: 5973834 (1999-10-01), Kadaba et al.
patent: 6010747 (2000-01-01), Beeson et al.
patent: 6011528 (2000-01-01), Inbar et al.
patent: 6012818 (2000-01-01), Araki
patent: 6060157 (2000-05-01), LaPerre et al.
patent: 6123877 (2000-09-01), Clabburn
patent: 6163402 (2000-12-01), Chou et al.
patent: 6174394 (2001-01-01), Gvon et al.
patent: 6201045 (2001-03-01), Koike
patent: 6239907 (2001-05-01), Allen et al.
patent: 6248859 (2001-06-01), Caruso et al.
patent: 6261664 (2001-07-01), Beeson et al.
patent: 6268941 (2001-07-01), Halldorsson
patent: 6317169 (2001-11-01), Smith
patent: 6381068 (2002-04-01), Harada et al.
patent: 6388661 (2002-05-01), Richards
patent: 6421103 (2002-07-01), Yamaguchi
patent: 6421148 (2002-07-01), Steiner
patent: 6428198 (2002-08-01), Saccomanno et al.
patent: 6445487 (2002-09-01), Roddy et al.
patent: 6527410 (2003-03-01), Yamaguchi
patent: 6768586 (2004-07-01), Sahouani et al.
patent: 1 186 939 (2002-03-01), None
patent: WO 00/70400 (2000-11-01), None
patent: WO 01/86343 (2001-11-01), None
patent: WO 02/059691 (2002-08-01), None
B. Larson et al., “Image Noise in High Resolution Rear Projection Screens” Cockpit Displays IX: Displays for Defense Applications, Darrel G. Hopper, Proceedings of SPIE vol. 4712, 2002.
Saleh et al. “Fundamentals of Photonics” pp 203-208, 1991.
Goldenberg et al. “Rear Projection Screens for Light Valve Projection Systems” vol. 3013, 1997, pp. 49-59.
Shimizu, “Invited Paper: Scrolling Color LCOS for HDTV Rear Projection” 2001 SID International Symposium Digest of Technical Papers, vol. 32, 2001 pp. 1072-1075.
Copy of International Search Report.

Affiliated with

Also associated with

Rating

High efficiency viewing screen does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High efficiency viewing screen, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High efficiency viewing screen will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3496111