Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1977-05-16
1978-11-21
Clark, Conrad J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
G02C 704
Patent
active
041261380
ABSTRACT:
The specific disclosure provides a soft contact lens comprising an eye contacting inner surface, and an annular carrier portion including an outer surface spaced from the eye contacting inner surface not greater than a predetermined distance. An optical portion is encompassed by the carrier portion and includes an outer surface with all points thereon spaced from the inner surface a distance greater than the predetermined distance. An intermediate portion interconnects the carrier and optical portions and includes an outer surface extending downwardly and outwardly from the outer surface of the optical portion to the outer surface of the carrier portion.
REFERENCES:
patent: 2241415 (1941-05-01), Moulton
patent: 2544246 (1951-03-01), Butterfield
patent: 3488111 (1970-01-01), Isen
patent: 3660545 (1972-05-01), Wichterle
patent: 3698802 (1972-10-01), Baron
patent: 3700761 (1972-10-01), O'Driscoll et al.
patent: 3807398 (1974-04-01), Grucza
patent: 3933411 (1976-01-01), Winner
Isen, Naturalens Fitting Manual, 1971.
Grosvenor, article in American Journal of Optometry & Archives, vol. 49, No. 5, May 1952, pp. 407-412.
Clark Conrad J.
Duggan Jeremiah J.
Graddis Albert H.
Schneeberger Stephen A.
Warner-Lambert & Company
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