Variable focus liquid crystal lens system

Details Variable focus liquid crystal lens system Variable focus liquid crystal lens system

1977-12-27

1980-02-26

Bauer, Edward S.

350335, 350347, G02F 113

Patent

active

041903307

ABSTRACT:
An optical lens system is disclosed which comprises a body of a nematic liquid crystal material placed in a variable electric or magnetic field. In response to variation of the field strength from zero to an upper limit, the focal length of the lens system changes continuously from a first focal length to a second focal length. The new lens system may be used, e.g., in cameras, telescopes, binoculars, projectors, and eyeglasses.

REFERENCES:
patent: 3876287 (1975-04-01), Sprokel
patent: 3881808 (1975-05-01), Gurtler et al.
patent: 3955208 (1976-05-01), Wick et al.
patent: 4037929 (1977-07-01), Bricot et al.
patent: 4066334 (1978-01-01), Fray et al.
patent: 4066335 (1978-01-01), Courtney et al.

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