| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light guide that is free from a degradation in light emitting efficiency, has simple structure, is compact in terms of dimension and shape, and provides uniform illuminance distribution under high illuminance. <P>SOLUTION: On the light emitting end (2b) of the light guide (2) composed of primary coated optical fiber group, a rod lens (3) whose end face is worked into a concave lens is mounted. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
