Optical device for aiding color-blind persons in distinguishing

Details Optical device for aiding color-blind persons in distinguishing Optical device for aiding color-blind persons in distinguishing

1997-11-26

1999-06-29

Mai, Huy

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

351158, 351165, G02C 716

Patent

active

059175737

ABSTRACT:
A device for aiding a color blind person in the distinguishing of colors includes at least two lenses of different colors disposed so that an object may be simultaneously viewable through each of the lenses by one eye of the person.

REFERENCES:
patent: 3586423 (1971-06-01), Zeltzer
patent: 3731993 (1973-05-01), Piringer
patent: 4300819 (1981-11-01), Taylor
patent: 4998817 (1991-03-01), Zeltzer
patent: 5408278 (1995-04-01), Christman

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