Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – With antiglare or shading
Patent
1991-09-10
1993-02-16
Arnold, Bruce Y.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
With antiglare or shading
351 57, 2 6, G02C 710
Patent
active
051875020
ABSTRACT:
A visor particularly useful by pilots includes a unitary, arcuate, molded transparent member having a lower edge closely conforming to the cheekbone area and bridge of the nose of a user's face. While maintaining a head's up attitude, the pilot's eyes may scan outside the cockpit, the panel instruments and also view a kneeboard. In the latter instance, farsightedness is overcome through the inclusion of a pair of contoured lenses flushly affixed to the inner surface of the visor, juxtaposed a cut-out engaging the wearer's nose. In view of the compound curvature of the visor, it is readily adapted for use with an aviator's helmet, with the added lenses on the inner visor surface avoiding interference with retraction of the visor into the helmet shell. Optionally, by the addition of separable fastener devices adjacent the two lateral extremes of the visor, a protective cover member may be removably attached in an overlying manner, upon the outer surface of the visor.
REFERENCES:
patent: 4181405 (1980-01-01), Cohen
patent: 4217037 (1980-08-01), Lemelson
patent: 4717249 (1988-01-01), Fischer
Arnold Bruce Y.
Dang Hung Xuan
Litman Richard C.
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