Liquid crystal projector

Details Liquid crystal projector Liquid crystal projector

2006-05-09

2006-05-09

Perkey, W. B. (Department: 2851)

Optics: image projectors

Polarizer or interference filter

C353S008000, C353S033000, C353S037000, C353S081000, C353S082000, C353S099000, C348S742000, C348S751000, C348S757000, C359S267000, C359S465000, C359S490020, C359S490020, C359S490020, C359S904000, C349S009000, C349S015000, C349S025000, C362S019000, C362S555000, C362S231000

Reexamination Certificate

active

07040760

ABSTRACT:
In order to provide a liquid crystal projector that prevents the image burn-in phenomenon or image sticking in a liquid crystal projector of ferroelectric liquid crystal, and moreover, that provides a bright projected image, the polarization directions of linearly polarized light beams that are irradiated upon a liquid crystal display device are switched in synchronization with the alternate reversal of the polarity of the liquid crystal display device, whereby a negative image, which could not be displayed in the prior art, can be converted to a positive image and displayed. In addition, in order to provide a liquid crystal projector that presents a bright projected image while preventing the burn-in phenomenon in a liquid crystal display device of ferroelectric liquid crystal, and further, that can be used in displaying a stereoscopic image, a P-polarized light beam and an S-polarized light beam are alternately generated, and an S-polarized light beam image light and a P-polarized light beam image light are produced from two liquid crystal display devices and alternately projected. When displaying a stereoscopic image, the left-eye image light of the S-polarized light beam and the right-eye image light of the P-polarized light beam are alternately produced and alternately projected.

REFERENCES:
patent: 6536902 (2003-03-01), Lee
patent: 6672722 (2004-01-01), O'Connor et al.
patent: 6769772 (2004-08-01), Roddy et al.
patent: 0 922 986 (1999-06-01), None
patent: 5-257110 (1993-10-01), None
patent: 6-289387 (1994-10-01), None
patent: 7-140415 (1995-06-01), None
patent: 9-138371 (1997-05-01), None
patent: 11-281931 (1999-10-01), None
patent: 11-331879 (1999-11-01), None
patent: 2999952 (1999-11-01), None
patent: 2001-174775 (2001-06-01), None
patent: 2002-244211 (2002-08-01), None

Affiliated with

Also associated with

Rating

Liquid crystal projector 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 projector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid crystal projector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3533931