Progressive lens series

Details Progressive lens series Progressive lens series

1992-11-20

1994-02-08

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 706

Patent

active

052852229

ABSTRACT:
A progressive power lens series in which the surface of each lens body has first and second vision portions which differ in power in accordance with a power curve which lies entirely in the y-z plane of a Cartesian coordinate system and which is the umbilical portion of the principal meridian of the progressive surface with the curvature of the surface in at least one of said vision portions spreading away from the power curve in accordance with a spreading function defined by the intersection of nested non-bipolar conic sections or nested hyperbolic cosines with the x-y plane of the coordinate system.

REFERENCES:
patent: 5123725 (1992-06-01), Winthrop

Affiliated with

Also associated with

Rating

Progressive lens series does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Progressive lens series, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Progressive lens series will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-701276