Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses
Patent
1989-03-06
1990-10-02
Dzierzynski, Paul M.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
351175, 350452, G02C 1300
Patent
active
049603264
ABSTRACT:
A lenticular lens for eyewear and method for making the same, the lens being formed with a curved substrate having a plurality of lentoid impressions formed preferably on the inner surface of the substrate by a mold that includes curved, opposed mold pieces, one mold piece having an inset with parallel posts forming a composite face that is ground to a predetermined first curvature for optical correction, and then reoriented by sliding the posts to a predetermined second curvature complimentary to curvature of the opposed mold piece for imprinting thin lens blanks with multiple lentoid impressions for lightweight recreational eyewear.
REFERENCES:
patent: 3195145 (1965-07-01), Tisher et al.
patent: 3628854 (1971-12-01), Jampolsky
patent: 3744882 (1973-07-01), Forster Jr.
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