Patent ID: 7407280
Filing Date: 2008-08-05
Classification: G02C

Abstract:
1. A sunglass lens for a single eye, formed by subjecting a plastic plate to a bending process to thereby form a curved lens surface having a convex front face and a concave rear face, wherein the curved lens surface is formed into an aspherical curved lens surface in which the degree of curvature along a lateral axis in an outer temple side with respect to the center thereof is greater than the degree of curvature along the lateral axis in an inner bridge side with respect to the center thereof and greater than the degree of curvature along a vertical axis, the degree of curvature along the lateral axis in the outer temple side continuously varies so as to gradually increase from the center of the curved lens surface approaching a periphery thereof, the degree of curvature along the lateral axis in the inner bridge side is constant, the curve along the lateral axis of the curved lens surface is formed so that the center is positioned ahead of other parts, and the curve along the lateral axis in the outer temple side and the curve along the lateral axis in the inner bridge side are curved backward, respectively.