Aspheric spectacle lens

Details Aspheric spectacle lens Aspheric spectacle lens

1988-07-13

1990-01-23

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

350432, G02C 702, G02B 302

Patent

active

048954390

ABSTRACT:
This patent discloses a spectacle lens having an aspheric front surface and a planar rear surface. The front surface of the spectacle lens includes a circular central zone and two or three annular zones surrounding the central zone. Each annular zone has an optical refraction of one diopter less than the adjacent interior optical zone of the spectacle lens.

REFERENCES:
patent: 4073578 (1978-02-01), Welsh
patent: 4185897 (1980-01-01), Frieder
patent: 4538887 (1985-09-01), Bristol
Renier, G. L.; "Aspheric Spectacles: Selecting Asphericity"; Optometric Monthly; Feb. 1978; pp. 110-113.

Affiliated with

Also associated with

Rating

Aspheric spectacle 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 Aspheric spectacle lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aspheric spectacle lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-642708