Liquid crystal eyeglass

Details Liquid crystal eyeglass Liquid crystal eyeglass

1985-08-27

1989-01-03

Miller, Stanley D.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Combined

350331T, 350335, 350347V, 351 41, G02C 704, G02F 1133

Patent

active

047952482

ABSTRACT:
Liquid crystal eyeglasses include a detector for detecting a physical quantity which varies with the temperature of the liquid crystal, the orientation of molecules of the liquid crystal or a change in the refractive index of the liquid crystal. The voltage applied to the liquid crystal is controlled in accordance with an output signal from the detector, thus compensating for a change in the refractive index of the liquid crystal which is attributable to a temperature change and maintaining the refractive index constant.

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patent: 4300818 (1981-11-01), Schachar
patent: 4460247 (1984-07-01), Hilscim et al.
patent: 4572616 (1982-02-01), Kowel et al.
patent: 4601545 (1987-07-01), Kern

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