| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain emission light having high luminance in the circumference direction higher than that on a surface (upper surface). <P>SOLUTION: In a light source 22, a mold 24 is formed so that the emission surface side of the light of a semiconductor light-emitting device 2 placed on a lead frame 23, and a substrate 23 is covered with a transparent resin or the like. The mold 24 is formed into a cylindrical shape as a whole, and a position facing the semiconductor emission molecule 2 is formed into a shape of being cut into an inverted conical shape. The mold 24 radially emits light to the semiconductor emission molecule 2 which is nearly in parallel with the placement surface by totally reflecting the light emitted in the direction facing the placement surface of the semiconductor light-emitting device 2 by a conical surface 25a, provided at a position facing the semiconductor light-emitting device 2. <P>COPYRIGHT: (C)2004,JPO |
