| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical element which does not require a time and effort for manufacture while it can emit light by inclining greatly to an optical axis of a light source, and to provide a lighting system using the same. <P>SOLUTION: An emitting face 11c is inclined to a face orthogonal to the optical axis Z of the light source 12 and a blaze shape 11g is formed. Thus, even when light distribution characteristics which are greatly inclined to the optical axis Z of the light source 12 are given, the inclination angles of the emitting face 11c are suppressed by combined use with the blaze shape 11g to make its structure compact. Further, compared with a case where it is used independently, the level difference of the blaze shape 11g can be made small, and since the total reflection is reduced, the light utilization efficiency can be increased. <P>COPYRIGHT: (C)2012,JPO&INPIT |
