Patent ID: 6750930
Filing Date: 2004-06-15
Classification: G02B,G02F

Abstract:
A reflector, comprising a plurality of light-reflective concave portions formed on a surface of a base material, each of the concave portions is a non-spherical concave surface, being formed such that an inclination angle of the concave portion at a periphery thereof has a maximum value, said maximum value of the inclination angle being that of at least a first point along the periphery having a larger inclination angle than the inclination angle of a second point along the periphery;the periphery being formed by an intersection of the concave surface and the surface of the base material and having a curvilinear form; and wherein the inclination of the concave portion is measured as an absolute value of an angle with respect to the surface of the base layer of a plane tangent to the concave portion.