Liquid crystal cells – elements and systems – Liquid crystal system – Projector including liquid crystal cell
Patent
1995-05-11
1997-03-18
Sikes, William L.
Liquid crystal cells, elements and systems
Liquid crystal system
Projector including liquid crystal cell
349 7, G02F 11335
Patent
active
056127979
ABSTRACT:
A liquid crystal projection display system includes a liquid crystal display panel (7) which is illuminated by light directed at a small angle (A) to its normal for display contrast enhancement. To reduce defocussing and distortion effects, the panel is tilted with the normal to its plane at an angle (B) to the axis of the projection lens smaller than the illumination angle (A) and a deflector element is disposed between the panel and the projection lens for deflecting the panel output beam so that it is directed generally parallel to the projection lens axis. The panel may be operated in a reflective mode or a transmissive mode. In the latter case, a further deflector element may be disposed adjacent the input side of the panel allowing the axis of illuminating light beam to be arranged parallel with the projection lens axis.
REFERENCES:
patent: 4043638 (1977-08-01), Kaufmann
patent: 4824214 (1989-04-01), Ledebuhr
patent: 5299037 (1994-03-01), Sakata
patent: 5437417 (1995-08-01), Kakamura et al.
patent: 5442413 (1995-08-01), Tejima et al.
patent: 5493351 (1996-02-01), Hamagishi et al.
patent: 5537171 (1996-07-01), Ogino et al.
patent: 5546202 (1996-08-01), Ansley
Nguyen Tiep H.
Sikes William L.
U.S. Philips Corporation
LandOfFree
Liquid crystal projection display systems 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 projection display systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal projection display systems will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1709809