| 摘要 |
<P>PROBLEM TO BE SOLVED: To make small the size of a lens in a direction crossing a main optical axis line of a light source. <P>SOLUTION: In the lighting device provided with a lens 2 equipped with an incident face 2a for light irradiated from the light source 1 to be made incident into, and a reflecting face 2b for reflecting the light incident from the incident face 2a toward a side away from the main optical axis line 1L of the light source 1, a reflecting face 2c for reflecting the light irradiated from the light source 1 toward a side away from the main optical axis line 1L of the light source 1 is formed at a side the same as the incident face 2a and opposite to the reflecting face 2b (at an underside of Fig.1(C)), out of the surfaces of the lens 2. <P>COPYRIGHT: (C)2007,JPO&INPIT |
