Patent ID: 6695454
Filing Date: 2004-02-24
Classification: G02B,G02F

Abstract:
A reflector comprising a substrate having a plurality of light-reflective concave portions on a surface thereof and a peak reflectance at about a specular reflection angle and a first integrated value of reflectance in a first reflection-angle range smaller than the specular reflection angle with respect to a substrate surface is larger than a second integrated value of reflectance in a second reflection-angle range larger than the specular reflection angle, the concave portions having a first vertical section including a first curve and a second curve and a second vertical section,wherein the first curve extends from a first point on a peripheral edge of one of the concave portions to a deepest point of the one of the concave portions and the second curve extends from the first curve and from the deepest point of the one of the concave portions to a second point on the peripheral edge of the one of the concave portions, and wherein a first average of an absolute value of an inclination angle of the first curve relative to the substrate surface is larger than a second average of an absolute value of an inclination angle of the second curve relative to the substrate surface.