Optical: systems and elements – Holographic system or element – Using a hologram as an optical element
Patent
1991-10-09
1993-07-20
Sikes, William L.
Optical: systems and elements
Holographic system or element
Using a hologram as an optical element
359 37, 359 49, 359 87, G02F 1133
Patent
active
052298744
ABSTRACT:
The disclosure relates to color image display devices in which the light is modulated spatially by a liquid crystal display screen, and is designed to improve the luminous efficiency and resolution of the color image in display devices of this kind. The disclosed display device includes a light source and a liquid crystal display screen. Each cell of the liquid crystal display screen has means to modulate the two orthogonal polarizations of light independently of each other.
REFERENCES:
patent: 3981559 (1976-09-01), Channin
patent: 4497543 (1985-02-01), Aoki et al.
patent: 4611889 (1986-09-01), Buzak
patent: 4877309 (1989-10-01), Takamatsu
patent: 4991941 (1991-02-01), Kalmanash
R. S. Vatne et al., "New LC/CRT Field Sequential Color Display" Proceeding of the SID, vol. 25, No. 1, 1984.
Patent Abstracts of Japan, vol. 12, No. 406 (P-777), Oct. 27, 1988, & JP-A-63-144 326, Jun. 16, 1988, T. Toshiaki, "Color Liquid Crystal Display Device".
Patent Abstracts of Japan, vol. 12, No. 477 (P-800), Dec. 14, 1988, & JP-A-63 195 624, Aug. 12, 1988, T. Toshiaki, "Color Liquid Crystal Display Device".
Lehureau Jean-Claude
Mourey Bruno
"Thomson-CSF"
Mai Huy K.
Sikes William L.
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