| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light source device and a lighting system causing no color breakup phenomenon even if a fluorescent rotor is used, and also capable of changing an illumination color. <P>SOLUTION: The fluorescent rotor 1 has three phosphor layers 2a, 2b, 2c different in the optical density of the phosphor, excited by a solid light source, and emitting fluorescent light with a wavelength longer than an emission wavelength of the solid light source, and a boundary 3c separating the phosphor layers 2a, 2c makes a curve. Thus, when an arc is drawn around a rotating axis X of the fluorescent rotor 1 with a certain radius, a ratio of lengths on the arc corresponding to a plurality of phosphor regions 2a, 2b, 2c may be changed depending on the radius. <P>COPYRIGHT: (C)2011,JPO&INPIT |
