Variable density sunglasses comprising light polarizing elements

Details Variable density sunglasses comprising light polarizing elements Variable density sunglasses comprising light polarizing elements

1977-06-29

1979-04-17

Sacher, Paul A.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

With antiglare or shading

350159, G02C 712

Patent

active

041497805

ABSTRACT:
Variable density spectacles comprising a pair of superposed iodine stained light polarizing elements, one of such elements being rotatable through an arc of less than 90 degrees to provide changes in the light transmitting functionality of the superposed elements; each of said elements having a light transmittance of from about 42 to 44 percent.

REFERENCES:
patent: 2298058 (1942-10-01), Land
patent: 2370697 (1945-03-01), Tillyer
patent: 2565362 (1951-08-01), Eloranta

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