Variable density lens

Details Variable density lens Variable density lens

1976-01-19

1978-01-03

Bauer, Edward S.

350220, 354227, G02F 113

Patent

active

040663353

ABSTRACT:
A lens is fabricated with a layer of liquid crystalline material between electrodes, wherein the liquid crystalline composition is capable of altering the state of polarization of light when a voltage is applied between the electrodes. A linear polarizer and an analyzer are used in conjunction with the lens, and optionally are incorporated into the lens.

REFERENCES:
patent: 1777262 (1930-09-01), Hasselkus et al.
patent: 1792917 (1931-02-01), Morte
patent: 3555987 (1971-01-01), Hadden
patent: 3652148 (1972-03-01), Wysocki et al.
patent: 3741629 (1973-06-01), Kahn
patent: 3844650 (1974-10-01), Nicholson et al.
patent: 3890628 (1975-06-01), Gurtler
patent: 3912369 (1975-10-01), Kashnow
patent: 3918796 (1975-11-01), Ferguson
patent: 3955208 (1976-05-01), Wick et al.
patent: 3972587 (1976-08-01), Scheffer

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