| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light guide capable of making luminance and a shape of a design image projected at a front side of the light guide to be uniform. <P>SOLUTION: The light guide includes a bottom section 12 wherein a bottom gradient angle θH changes according to a distance from a light source 51, a plurality of reflection sections 13A wherein they are arranged so as to make incident light M reflect on a front side, and inclination adjustment sections 13B wherein they are arranged at positions opposite to respective reflection sections 13A. Angles of the reflection sections 13A against an advancing direction of light M are approximately uniform, the angles of the inclination adjustment sections 13B against the advancing direction of the light change according to bottom gradient angles θH, and the width WA of the reflection section 13A and the width WB of the inclination adjustment section 13B are approximately uniform. <P>COPYRIGHT: (C)2013,JPO&INPIT |
