| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a circular light source device or the like achieving miniaturization and cost. <P>SOLUTION: The circular light source device includes: an annular light condensing lens 8; and a plurality of linear light source devices 100 annularly arranged along the incident surface of the light condensing lens 8, for emitting linear illumination light to the incident surface of the light condensing lens 8. <P>COPYRIGHT: (C)2011,JPO&INPIT |
