Eyeglasses and other lenses of variable focal length and means a

Details Eyeglasses and other lenses of variable focal length and means a Eyeglasses and other lenses of variable focal length and means a

1981-07-20

1983-12-06

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

351158, G02C 100

Patent

active

044189907

ABSTRACT:
An eyeglass apparatus having a variable focal length lens and an associated method for varying the focal length of the lens uses a lens having a focal length which is variable as pressure along the lens is varied. Focal length adjusting mechanisms carried by the eyeglass frames provide for manual or automatic adjustment of the lens focal length.

REFERENCES:
patent: 1269422 (1918-06-01), Gordon

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