Patent
1991-08-01
1992-12-15
Perkey, W. B.
354430, 354482, 354295, G03B 724, G03B 1100
Patent
active
051721465
ABSTRACT:
The present invention covers automatic and manual control of the color of light striking film in a camera by electrically manipulating the color purity of one or more optical color correction filter elements made of clear and dyed dichroic liquid crystals that do not significantly disperse light being transmitted through the filters. In a preferred embodiment for a camera the opto-electrical and electrical components of the invention are designed to provide automatic correction of incident light on a photographic subject to match the color temperature standard to which the film was manufactured.
REFERENCES:
patent: 3246586 (1966-04-01), Hunt
patent: 3452658 (1969-07-01), Krull et al.
patent: 3468228 (1969-09-01), Rogers
patent: 3500730 (1970-03-01), Matsubara et al.
patent: 3672268 (1972-06-01), Scheikel et al.
patent: 4041308 (1977-08-01), Fujita
patent: 4383735 (1983-05-01), Stravitz
patent: 4473289 (1984-09-01), Wallace
patent: 4511229 (1985-04-01), Schwartz
patent: 4682210 (1987-07-01), Ikemura
patent: 4739393 (1988-04-01), Seki et al.
patent: 4833535 (1989-05-01), Suzuki et al.
patent: 4847680 (1989-07-01), Okino
patent: 4887121 (1989-12-01), Pritchard
patent: 4918470 (1990-04-01), Whiteside
Long Joseph F.
Perkey W. B.
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