Patent ID: 8425090

Claim:
A reflector cup for a lamp, comprising a cup body, a cup top having an aperture through which a light source is inserted into the reflector cup, and a cup bottom provided with an opening for outputting lights from the light source, characterized in that the cup body is provided with a plurality of recesses or protrusions that have a curvature different from that of a surface profile of the reflector cup, wherein the cup body of the reflector cup is provided with a plurality of grid veins arranged in a matrix, in each of the grid veins is formed a protruded or recessed curved surface, and the curvature of the curved surface is defined by a straight line length A-B of a side of the grid vein and a height D-C extending from an apex of the curved surface to the side of the grid veil, and the height D-C is 0.02(A-B) to 0.1(A-B).