Patent ID: 7542113
Filing Date: 2009-06-02
Classification: G02F

Abstract:
1. A reflector, wherein, when light is incident on the reflector in a first direction, a reflection characteristic profile of light reflected therefrom shows a reflectance distribution which is asymmetric with respect to a specular reflection angle of the incident light and shows a non-Gaussian distribution in which a maximum value of reflectance is within a reflection angle range smaller than the specular reflection angle of the incident light, when light is incident on the reflector in a second direction perpendicular to the first direction, a reflection characteristic profile of light reflected therefrom shows the non-Gaussian distribution, similar to the case in which the light is incident on the reflector in the first direction, wherein a plurality of concave portions is provided in a reflective surface of a substrate, and an inner surface of each concave portion includes: a concave curved surface that extends from an opening portion of the concave portion to a lowest point of the concave portion; a first flat surface that is provided adjacent to the concave curved surface so as to be perpendicular to the first direction; and a second flat surface that is provided adjacent to the concave curved surface so as to be perpendicular to the second direction.