| 摘要 |
<p>One purpose of the present invention is to provide a versatile lighting optical system capable of outputting a plurality of kinds of fluorescence at arbitrary timing. The lighting optical system has a color wheel (20), and a plurality of light sources. The color wheel has a substrate (2), which can rotate about a rotation axis, and a plurality of fluorescent material layers (11, 12, 13), which are formed substantially in concentric annular shapes on one surface of the substrate with a rotating axis at the center, and which respectively emit fluorescence having wavelengths different from each other when irradiated with excitation light. The light sources are provided corresponding to the fluorescent material layers, respectively, and radiate the excitation light to the fluorescent material layers, respectively.</p> |
