Eyeglasses for use in the treatment/diagnosis of certain malfunc

Details Eyeglasses for use in the treatment/diagnosis of certain malfunc Eyeglasses for use in the treatment/diagnosis of certain malfunc

1991-01-04

1993-11-23

Arnold, Bruce Y.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

351 44, 351158, G02C 716

Patent

active

052648770

ABSTRACT:
The article includes an eyeglass frame (12) and two lenses (14, 16). Each lens has a film (18,20) on one surface thereof which is changeable between an opaque condition and a transparent condition, controlled by an electrical circuit (22).

REFERENCES:
patent: 4531814 (1985-07-01), Ballmer
patent: 4698564 (1987-10-01), Slavin
patent: 4756605 (1988-07-01), Okada et al.
patent: 4907860 (1991-03-01), Noble

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