Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Patent
1987-03-10
1988-12-13
Bovernick, Rodney B.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
351200, 351201, G02C 716
Patent
active
047906430
ABSTRACT:
A frame (1) includes means (3) for being held in front of the eyes, and means (6) for supporting and guiding the displacement of a moving opaque element (7) such as shutter movable between a central position in which it leaves binocular vision free, and two opposite side positions preventing vision via one or other of the eyes when the head is tilted.
REFERENCES:
patent: 505000 (1983-09-01), Price
patent: 3492989 (1970-03-01), Allen
patent: 3819189 (1974-06-01), Goode
patent: 4522474 (1985-11-01), Slavin
Bovernick Rodney B.
Briot International
Dzierzynski P. M.
Ferguson Jr. Gerald J.
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