| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting system capable of continuously changing color concentration while suppressing color irregularity. <P>SOLUTION: This lighting system 10 is provided with: a light source 11 emitting illumination light; a first filter member 17A arranged on an optical axis of the illumination light, and having a first concentration gradient; and a second filter member 17B arranged by being superposed on the first filter member 17A on the optical axis, and having a second concentration gradient; and changes the color concentration of light by making the illumination light pass through both the first filter member 17A and the second filter member 17B. <P>COPYRIGHT: (C)2008,JPO&INPIT |
