Patent ID: 6947107
Filing Date: 2005-09-20
Classification: G02B,G02F

Abstract:
1. A reflector comprising a substrate having a plurality of light-reflective concave portions on a surface thereof, each concave portion having a specific vertical section which passes through a deepest point of the concave portion, wherein an internal shape of the specific vertical section is defined by a first curve and a second curve, the first curve extending from a first point on a peripheral edge of the concave portion to the deepest point of the concave portion, and the second curve extending continuously from the first curve and from the deepest point of the concave portion to a second point on the peripheral edge of the concave portion, and wherein an average of an absolute value of an inclination angle of the first curve relative to the substrate surface is larger than an average of an absolute value of an inclination angle of the second curve relative to the substrate surface, a maximum value of the absolute value of the inclination angle of the first curve relative to the substrate surface is in the range of about 2° to 90°, and a maximum value of the absolute value of the inclination angle of the second curve relative to the substrate surface is less than that of the maximum value of the absolute value of the inclination angle of the first curve relative to the substrate surface.