Apparatus for improving human visual response during conditions

Details Apparatus for improving human visual response during conditions Apparatus for improving human visual response during conditions

1973-12-20

1976-06-15

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

35095, 35011, 35144, G02C 710, G02B 528

Patent

active

039633306

ABSTRACT:
Apparatus for improving vision under conditions of relatively low intensity ambient illumination. An improved lens is of the concave meniscus type and has a total power in the range of between about 0.12 to 1.50 diopters. In addition, the lens is designed to attenuate radiation transmitted through it of wavelengths below about 5400 A. An anti-reflectant coating may also be provided on the rear surface of the lens to reduce glare.

REFERENCES:
patent: 2758510 (1956-08-01), Auwarter
patent: 2964427 (1960-12-01), Rheinberger et al.
"Spectral-Transmissive Properties & Use of Colored Eye-Protective Glasses" Circular of Nat. Bur. Stds. C421, June 1, 1938 Coblentz et al. pp. 13, 14 & 27.
"Color in Sunglass Lenses," Am. Jour. Optometry & Arch. Am. Acdy. of Optrometry, vol. 46, No. 11, Nov. 1969, Clark pp. 825 & 835.

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