| 摘要 |
PROBLEM TO BE SOLVED: To provide a light guide plate which can easily be manufactured and equally irradiate a wide range with light. SOLUTION: A light source 1 is disposed on the side of one surface of a plate type light guide member 2 and a hemispherical recess 2b is provided at a position corresponding to the light source 1 on the side of the other surface. COPYRIGHT: (C)2008,JPO&INPIT
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