| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light guide plate capable of illuminating a larger area with a less light source and with saved space in accordance with the shape of a plane to be illuminated. <P>SOLUTION: A periphery of a light guide part 1a is formed in a non- orthogonal shape, and a light source 3 is arranged at a central part of an underside of the light guide part 1a, top faces of which are formed in a convex shape upward. <P>COPYRIGHT: (C)2003,JPO |
