Being the promotive refracting power

摘要

PROBLEM TO BE SOLVED: To provide an internal progressive refractive lens capable of solving disadvantages in terms of lens thickness, external appearance and the like in an internal progressive refractive lens in which the eye-side refractive surface is formed of a progressive refractive surface.;SOLUTION: An eye-side refractive surface 11 of a distance portion is concave and at least part of an eye-side refractive surface 3 of a near portion is a convex region 31 where one or both of principal meridians of the surface are convex.;COPYRIGHT: (C)2007,JPO&INPIT