Selective optical filter
OwnerBernard A. Carreau, Gabriel Lombardinventors
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Abstract
A selective optical filter, intended to be placed before the eyes for protection and for improvement of vision, features a plurality of different light absorption zones comprising a central zone which is completely light permeable, or has low light absorption capability, a zone surrounding this central zone which is light permeable but has a relatively high light absorption capability, the said zone being included between the periphery of the central zone and a cone having its apex at the optical center of the eye and an included angle of between about 15.degree. and 30.degree., and the outer periphery of the zone adjoining a further zone of low light absorption capability corresponding to the peripheral part of the retina.
Claims8
A selective optical filter for use with eyes for the protection and improvement of the vision thereof, said filter comprising, a plurality of different light absorption zones, said zones including a central zone having a low light absorption capability, a second zone surrounding the central zone the second zone being light permeable and having a relatively high light absorption capability, and a third zone extending from at least a portion of the outer periphery of the second zone, the third zone having a low light absorption capability.
Dependencies are inferred from the claim text.