Liquid crystal eyeglasses

Details Liquid crystal eyeglasses Liquid crystal eyeglasses

1994-10-04

1996-09-03

Sikes, William L.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

351 44, 351 45, G02C 712

Patent

active

055528414

ABSTRACT:
The optical instrument comprises at least one lens (5) and application means (9) for applying the optical device. The lens is constituted at least in part by a liquid crystal device (LCD); power supply means of regulable voltage (11) are provided, to control the transparency of the lens.

REFERENCES:
patent: 4279474 (1981-07-01), Belgorod
patent: 5276539 (1994-01-01), Humphrey

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