Reflector for use in light emitting device and light emitting device using the same

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
• the convex curved surface has a radius, in each of the reflection regions, is set to be larger in a circumferential direction of the concave reflecting surface when the convex curved surface is positioned more distant form 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 uniformly in the radial direction of the concave reflecting surface.

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, each having a convex spherical surface, protruded therefrom;
• and
• a curvature of a surface of the convex spherical surface, in each of the reflection regions, is set to be smaller when the convex spherical 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 spherical surface is positioned more distant from the point.

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, each having a convex spherical surface, protruded therefrom;
• and
• a curvature of a surface of the convex spherical surface, in each of the reflection regions, is set to be larger in a circumferential direction of the concave reflecting surface when the convex spherical surface is positioned more distant form 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 uniformly in a radial direction of the concave reflecting surface.