Progressive power lens

Details Progressive power lens Progressive power lens

2005-06-24

2008-03-11

Sugarman, Scott J. (Department: 2873)

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Ophthalmic lenses or blanks

C351S161000

Reexamination Certificate

active

07341344

ABSTRACT:
A progressive power lens having a positive vertex power in a distance portion is provided. At least a back surface of the progressive power lens is configured as a progressive surface. The progressive power lens satisfies a condition:Pf+ADD3<D⁢⁢1<Pf+ADD(1)where Pf represents a vertex power in the distance portion along a vertical cross-section, ADD represents an addition power, and D1represents a surface power of a front surface.

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patent: 2003/279902 (2003-10-01), None
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