| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve a problem that it is impossible to obtain a lighting system with fine light distribution characteristics, if one uses LEDs as a light source, and especially, it is impossible to obtain one having light distribution characteristics equivalent to those of an incandescent bulb. <P>SOLUTION: The lighting system, provided with a light source module and a light guide member arranged in opposition to a light-emitting part of the light source module for propagating light beams of the light source module, illuminates by emission light from the light guide member. The light guide member has optical function faces at a first end part adjacent to the light-emitting part and a second end part at the opposite side, and at the same time, has a light extraction structure at each side face adjacent to the first end part as well as the second end part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
