Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1983-09-26
1987-01-06
Brigance, Gerald L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340703, 350377, 350408, G09G 304
Patent
active
046350519
ABSTRACT:
A high-speed electro-optical light gate (40) includes a pair of matched variable optical retarders (54 and 56) positioned between a pair of light polarizing filters (42 and 44) to promote rapid switching between optical transmission states for light rays of the wavelength to which the variable optical retarders are tuned. The projections (62 and 66) of the optic axes of the variable optical retarders are orthogonally aligned so that the response time characteristics of the transitions between optical transmission states of the light gate reflect only the turn-on time response characteristic of the variable optical retarders. A field sequential color display system (78) incorporates a switchable color filter (80) which utilizes the alignment configuration of the variable optical retarders of the light gate to provide light output states of white light and light of three different colors to form an image in full color.
REFERENCES:
patent: 2586635 (1952-02-01), Fernsler
patent: 2715153 (1955-08-01), Sziklai
patent: 2753763 (1956-07-01), Haines
patent: 3482182 (1969-12-01), Kosanke et al.
patent: 3536921 (1970-10-01), Caulfield
patent: 3806227 (1974-04-01), Greubel et al.
patent: 3838906 (1974-10-01), Kumada
patent: 4017156 (1977-04-01), Moriyama et al.
patent: 4025164 (1977-05-01), Doriguzzi et al.
patent: 4061417 (1977-12-01), Katagiri
patent: 4097128 (1978-06-01), Matsumoto et al.
patent: 4103260 (1978-07-01), Buchman
patent: 4239349 (1980-12-01), Scheffer
patent: 4241339 (1980-12-01), Oshiyama
patent: 4328493 (1982-05-01), Shanks et al.
patent: 4403832 (1983-09-01), Tanaka et al.
patent: 4461543 (1984-07-01), McMahan
patent: 4471351 (1984-09-01), Anderson
patent: 4497543 (1985-02-01), Aoki et al.
Tobias, Martin: "International Handbook of Liquid Crystal Displays," OVUM Ltd., London, England, 1975, paragraph 9.5.3, Figs. F9.19 and F9.20.
Angello Paul S.
Brigance Gerald L.
Kovalick Vincent P.
Tektronix Inc.
Winkelman John D.
LandOfFree
High-speed electro-optical light gate and field sequential full 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-speed electro-optical light gate and field sequential full , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-speed electro-optical light gate and field sequential full will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-687286