Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1988-08-09
1990-01-02
Sugarman, Scott J.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
G02C 704
Patent
active
048909122
ABSTRACT:
A contact lens includes a central part, confined by the brims of a bowl-shaped recess at the inside/concave side of the lens, a brim-part around the periphery of the lens, having at the outside convex of the lens a surface with a smaller radius than that of the surface of the inner part and having a thickness which from the inside to the outside decreases gradually, an intermediate part situated between the central part and the brim-part, the surfaces of which, both at the inside and at the outside of the intermediate part smoothly connect the surfaces of the central part and the brim-part.
REFERENCES:
patent: Re25286 (1962-11-01), DeCarle
patent: 3270099 (1966-08-01), Camp
patent: 3614217 (1971-10-01), Bronstein
Stone, J. et al; "Contact Lenses"; (Butterworths, Second Edition, 1981/1982); pp. 571-573 and 588-590.
LandOfFree
Trifocal eye-contact lens does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trifocal eye-contact lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trifocal eye-contact lens will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1380840