| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system including light emitting diodes which can be easily installed at the same angle, while achieving easy manufacturing, high efficiency and excellent uniformity. <P>SOLUTION: An optical element 34 constitutes a cylindrical lens which has characteristics to irradiate an inspection region with light of the light-emitting diode 33, including an outgoing face 36 of the light. A light incident face 37 opposed to the outgoing face 36 is planar and has a groove 38 having the same shape as the front cross-sectional shape of the light emitting part 35 of the plurality of light-emitting diodes 33. The plurality of light-emitting diodes 33 are installed by inserting and positioning the light emitting parts 35 in the groove 38 of the optical element 34. <P>COPYRIGHT: (C)2012,JPO&INPIT |
