Electro-optic lens having multiple responsive regions of a...

Details Electro-optic lens having multiple responsive regions of a... Electro-optic lens having multiple responsive regions of a...

2006-01-31

2006-01-31

Kim, Robert H. (Department: 2871)

Liquid crystal cells, elements and systems

Liquid crystal system

Liquid crystal eyewear

C349S014000

Reexamination Certificate

active

06992731

ABSTRACT:
The present invention is directed to a lens having a variable light transmission in response to variations in incident light intensity. The lens is useful for providing eye protection from variations in ambient light intensity. The present invention is directed to shade devices having lenses which have a variable degree of light transmission which automatically changes in response to the intensity of incident light or at the selection of a user of the eye glasses.

REFERENCES:
patent: 4241286 (1980-12-01), Gordon
patent: 5113270 (1992-05-01), Fergason
patent: 5208688 (1993-05-01), Fergason et al.
patent: 5276539 (1994-01-01), Humphrey
patent: 5519522 (1996-05-01), Fergason
patent: 5751258 (1998-05-01), Fergason et al.

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