Resin ophthalmic lenses having a prismatic segment

Details Resin ophthalmic lenses having a prismatic segment Resin ophthalmic lenses having a prismatic segment

1978-02-24

1981-09-08

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 706

Patent

active

042881498

ABSTRACT:
A cast resin ophthalmic lens comprises a homogeneous body defined of cured optical casting resin. The body has a cast optically finished front surface composed of a major surface portion and a minor surface portion. The minor surface portion defines in the front surface, in a selected localized area thereof, a lens segment having a predetermined prismatic optical effect. The major surface portion is a portion of a surface of revolution having a first axis of symmetry and having an effective center of curvature therealong. The minor surface portion is a portion of a surface of revolution having a second axis of symmetry. The first and second axes of symmetry intersect, if at all, at a location on the first axis other than at substantially the center of curvature of the major surface portion.

REFERENCES:
patent: 815648 (1906-03-01), Slagle
patent: 2006640 (1935-07-01), Hubbell
patent: 2072593 (1937-03-01), Hill
patent: 2254440 (1941-09-01), Moulton
patent: 2796000 (1957-06-01), Beasley
patent: 2890486 (1959-06-01), Crandon
patent: 3297422 (1967-01-01), Emerson et al.
patent: 3460928 (1969-08-01), Casko
patent: 3614217 (1971-10-01), Bronstein
patent: 3649236 (1972-03-01), Rosenbauer
patent: 3946982 (1976-03-01), Calkins et al.

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