Patent ID: 8197101

Claim:
A reflector for use in a light emitting device, comprising: a concave reflecting surface including a plurality of reflection regions, which are arranged so as to correspond to a plurality of directional light sources, each of whose light has maximum intensity on its light axis, and has gradually decreased intensity at a wider angle relative to the light axis, wherein: the concave reflecting surface has micro reflector segments protruded therefrom in multiple stages and in multiple radial columns, the micro reflector segments each having a convex curved surface which is defined by a locus of a circular arc moved in parallel in a radial direction of the concave reflecting surface; and a radius of the circular arc of the convex curved surface, in each of the reflection regions, is set to be smaller when the convex curved surface is positioned closer to a point on which light on the light axis of a corresponding one of the directional light source is incident, and is set to be larger when the convex curved surface is positioned more distant from the point.