Light emitting device

摘要

A main subject of the present invention is to provide a light emitting device 10 using a point light source 12 having a narrow distribution angle; the light emitting device 10 regulates its distribution angle and illuminates the lighting area with high-uniformity light. The light emitting device 10 comprises a point light source, a solid and transparent light guide 14, a recess 26 arranged on center of a light receiving surface 20, a concave lens 28 formed on a surface of the recess 26. A reflecting side surface 22 is a revolving surface determined by revolving a parabola P passing through one point of peripheral border A of the light receiving surface 20 and the other point of peripheral border D of the light radiating surface 24, and having a focal point on the other point of peripheral border B.