Ophthalmic lenses having progressively variable refracting power

Details Ophthalmic lenses having progressively variable refracting power Ophthalmic lenses having progressively variable refracting power

1989-02-23

1991-03-19

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 706

Patent

active

050005596

ABSTRACT:
Ophthalmic lenses having progressively variable refracting power are designed to have good aberrational balance, a wide field of view, large clear vision areas, and minimal image distortion and shift. Aberration density is reduced in a progressively variable refracting power area in a side portion of the principal meridional curve from a lower position in a portion for distance vision correction, through an intermediate portion, to a portion for near vision correction. Optical cross-sectional and longitudinally sectional shapes of the refracting surfaces optimize aberration balance in the entire area of the refracting surfaces. In the side areas, an average refracting power on the lens surface and a value associated with the Gaussian curvature are used as parameters to define lens aberration quantitatively.

REFERENCES:
patent: 3687528 (1972-08-01), Maitenaz
patent: 3910691 (1975-10-01), Maitenaz
patent: 4537479 (1985-08-01), Shinohara et al.
Optica Acta, International Journal of Optics, vol. 10, No. 3, pp. 223-227.

Affiliated with

Also associated with

Rating

Ophthalmic lenses having progressively variable refracting power does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ophthalmic lenses having progressively variable refracting power, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ophthalmic lenses having progressively variable refracting power will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2005518