Multi-focal ophthalmic lens with base in prism

Details Multi-focal ophthalmic lens with base in prism Multi-focal ophthalmic lens with base in prism

2006-09-12

2006-09-12

Collins, Darryl J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S168000

Reexamination Certificate

active

07104647

ABSTRACT:
A pair of glasses comprises a frame. A first progressive addition lens in the frame comprises a distance portion and a near portion. Diopter power and base in prism gradually increase from the distance portion to the near portion. A second progressive addition lens in the frame comprises a distance portion and a near portion. Diopter power and base in prism gradually increase from the distance portion to the near portion. Base in prism in the first lens may be different from in the second lens. Amount of base in prism may vary in a range of about 0 to 1.5 diopters.

REFERENCES:
patent: 4961639 (1990-10-01), Lazarus
patent: 5200859 (1993-04-01), Payner et al.
patent: 5381191 (1995-01-01), Levy
patent: 5557348 (1996-09-01), Umeda et al.
patent: 5782894 (1998-07-01), Israel
patent: 5969790 (1999-10-01), Onufryk
patent: 6019470 (2000-02-01), Mukaiyama et al.
patent: 6062691 (2000-05-01), Markson
patent: 6347869 (2002-02-01), Xu et al.
patent: 6505934 (2003-01-01), Menezes
patent: 6547387 (2003-04-01), Katsantones
patent: 6579478 (2003-06-01), Lossman et al.

Affiliated with

Also associated with

Rating

Multi-focal ophthalmic lens with base in prism does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multi-focal ophthalmic lens with base in prism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-focal ophthalmic lens with base in prism will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3599088