Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1996-10-03
1998-06-09
Nelms, David C.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
351160R, 351160H, G02C 704, G02C 706
Patent
active
057643393
ABSTRACT:
A variable focus contact lens, has a body with a first half and an opposite second half. The body also has a first peripheral surface, an opposite second peripheral surface and an associated focal length. The lens includes a first material having a resilience so that as compressive force is applied to the first surface and the second surface, the focal length of the lens changes in proportion to the compressive force. A force-distributing structure is disposed within the lens for distributing force within the lens so as to inhibit astigmatism in the lens as compressive force is applied to the first surface and the second surface.
REFERENCES:
patent: 3431327 (1969-03-01), Tsuetaki
patent: 4174156 (1979-11-01), Glorieux
patent: 4435050 (1984-03-01), Poler
patent: 4702573 (1987-10-01), Morstad
patent: 4859049 (1989-08-01), Muller
patent: 4890911 (1990-01-01), Sulc et al.
patent: 5100225 (1992-03-01), Rothe
patent: 5108169 (1992-04-01), Mandell
patent: 5270744 (1993-12-01), Portney
patent: 5408281 (1995-04-01), Zhang
patent: 5500695 (1996-03-01), Newman
patent: 5517260 (1996-05-01), Glady et al.
Medical University of South Carolina
Nelms David C.
Vierra-Eisenberg Jason D.
LandOfFree
Compressive force-activated variable focus lens and method of ma does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Compressive force-activated variable focus lens and method of ma, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compressive force-activated variable focus lens and method of ma will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2206982