Progressive addition lenses

Details Progressive addition lenses Progressive addition lenses

2005-04-26

2005-04-26

Schwartz, Jordan M. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S169000

Reexamination Certificate

active

06883916

ABSTRACT:
The present provides progressive addition lens designs and lenses in which unwanted lens astigmatism is reduced as compared to conventional progressive addition lenses. The lenses of the invention containing at least one surface that is a composite of a progressive surface design and a regressive surface design.

REFERENCES:
patent: 6019470 (2000-02-01), Mukaiyama et al.
patent: 6074062 (2000-06-01), Morris et al.
patent: 6139148 (2000-10-01), Menezes
patent: 1-026-533 (2000-08-01), None
patent: 2000-249992 (2000-09-01), None

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