Progressive power lens

Details Progressive power lens Progressive power lens

1994-02-18

1995-08-29

Sugarman, Scott J.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

G02C 706

Patent

active

054465087

ABSTRACT:
The present includes a progressively variable focal power ophthalmic lens that has a unique geometry which significantly reduces aberrations in the lens. The aberrations are reduced by altering the traditional geometry associated with peripheral areas of the lens from a spherical shape to an aspherical shape. Still another advantage of the lens geometry of the present invention is that the aberrations remain low after the lens is rotated to accommodate the left or right eye.

REFERENCES:
patent: 4307945 (1981-12-01), Kitchen et al.
patent: 4426139 (1984-01-01), van Ligten et al.
patent: 4472036 (1984-09-01), Kitani

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