Eyeglasses with controllable refracting power

Details Eyeglasses with controllable refracting power Eyeglasses with controllable refracting power

1991-09-26

1993-01-26

Bovernick, Rodney B.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

351158, G02C 100

Patent

active

051825856

ABSTRACT:
Eyeglasses equipped with liquid lenses having adjustable refractive power that depends on the amount of liquid forced into each lens. An electrically powered pump and an electronic controller regulate the liquid input to the lenses in response to a signal determined by the focal length required for viewing a given object in the field of vision. This focal length is determined by the use of a rangefinder mounted on the frame of the eyeglasses. The system is programmed for automatic response tailored to the specific eyesight of the wearer.

REFERENCES:
patent: 2437642 (1948-03-01), Henroteau
patent: 2576581 (1951-11-01), Edwards
patent: 3161718 (1964-12-01), De Luca
patent: 3614215 (1971-10-01), Mackta
patent: 3738734 (1973-06-01), Tait
patent: 4174156 (1979-11-01), Glorieux
patent: 4181408 (1980-01-01), Senders
patent: 4418990 (1983-12-01), Gerber
patent: 4466706 (1984-08-01), Lamothe

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