1976-01-05
1978-01-03
Bauer, Edward S.
G02F 113
Patent
active
040663345
ABSTRACT:
An optical modulation device such as an electrical switchable prism, which may be used as a light deflector, or an electrically switchable lens, comprises a volume of liquid crystal material, means for applying electric or magnetic bias fields across the material and means for switching the bias fields to provide a controlled refractive index gradient in the liquid crystal material. The liquid crystal material may be contained between substrates having a set of four or eight electrodes (collectively) on their inner surfaces.
REFERENCES:
patent: 3424513 (1969-01-01), Lotspeich
Freiser: "Light Scanner Employing a Nematic Liquid Crystal", IBM Tech. Disclosure Bull., vol. 15, pp. 2540-2541, Jan. 1973.
Holzman: "Liquid Crystal Light Modulator and Scanner", IBM Tech. Disc. Bull., vol. 8, pp. 151-152, June 1965.
Hu et al.: "Optical Deflection in Thin-Film Nematic-Liquid-Crystal Waveguides", IEEE Jour. of Quart. Elect., vol. QE-10, Feb. 1974.
Sheridan et al.: "Electro-optically Induced Deflection in Liquid Crystal Waveguides", Jour. of Applied Physics, vol. 45, pp. 5160-5163, Dec. 1974.
Fray Adrian Forrest
Jones David
Bauer Edward S.
National Research Development Corporation
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