| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light-condensing device for obtaining a high light-condensing efficiency. <P>SOLUTION: The light-condensing device includes: a converging device which receives light from a parallel light source, and emits the light; and a light-receiving device which receives the light emitted from the converging device. The converging device includes an optical sheet 311 having a front surface 312 facing the parallel light source, and a structured surface 313 which is disposed opposite the front surface 312 so as to emit the light from the parallel light source. The structured surface 313 includes a plurality of arranged linear prisms 314. <P>COPYRIGHT: (C)2013,JPO&INPIT |
