Antifouling coating for eyeglass lenses with a higher coefficient of friction than uncoated lenses

摘要

The optical article includes an optical substrate comprising a concave surface with a radius of curvature of equal to or greater than 350 mm on one side and a convex surface with a radius of curvature of equal to or greater than 120 mm on the other side, a first antifouling layer directly or through at least one additional layer on the concave surface, and a second antifouling layer directly or through at least one additional layer on the convex surface, and satisfies the conditions below:
0.01≦μL1≦0.120.1≦μL2μL1<μL2;wherein μL1 denotes a coefficient of static friction of a surface of the first antifouling layer, and μL2 denotes a coefficient of static friction of a surface of the second antifouling layer.

主权项

1. An optical article, which comprises:
an optical substrate comprising a concave surface with a radius of curvature of equal to or greater than 350 mm on one side and a convex surface with a radius of curvature of equal to or greater than 120 mm on the other side; a first antifouling layer directly or through at least one additional layer on the concave surface; and a second antifouling layer directly or through at least one additional layer on the convex surface; and satisfies the conditions below:
0.01≦μL1≦0.120.1≦μL2μL1<μL2 wherein μL1 denotes a coefficient of static friction of a surface of the first antifouling layer, and μL2 denotes a coefficient of static friction of a surface of the second antifouling layer.