Eyewear having translucent superior and inferior fields of view

Details Eyewear having translucent superior and inferior fields of view Eyewear having translucent superior and inferior fields of view

1994-01-10

1995-07-11

Sikes, William L.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

351 53, G02C 716

Patent

active

054325684

ABSTRACT:
Eyewear for use by a person exposed to an environment of glare-inducing illumination. The eyewear has a frontal portion for confronting the eyes, which frontal portion extends between an upper and lower periphery. A transparent optical region is provided within the frontal portion for intercepting lines of sight substantially above and below the slightly elevated standard line of sight at the mid-pupillary position of the eyes. For normalizing overhead and reflected glare to a level of diffuse illumination reducing veiling luminance and asthenopic effects, upper and lower translucent regions arc provided within the frontal portion. The upper translucent region extends substantially upwardly from between the standard line of sight and the upper periphery of the frontal portion. The lower translucent region extends substantially downwardly from between the standard line of sight and the lower periphery of the frontal portion.

REFERENCES:
patent: 3791722 (1974-02-01), Ahlberg et al.
patent: 4470673 (1984-09-01), Gilson et al.
patent: 4698022 (1987-10-01), Gilson
patent: 4824234 (1989-04-01), Sparks et al.
patent: 5177510 (1993-01-01), Peters et al.
Guth, S. K. "Discomfort Glare," Amer. J. Optom. and Arch. Am. Acad. Optom., 38, pp. 247-258 (1961).

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