| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device capable of simply changing lighting colors without using a complicated control system or the like even if a fluorescent rotor is used.SOLUTION: The light source device includes a solid light source 5 emitting ultraviolet light, and a reflection type fluorescent rotor 1 rotatable around a rotation axis X. The reflection type fluorescent rotor 1 includes a plurality of fluorescent material regions provided with fluorescent material layers emitting different fluorescent light, respectively, depending on incident ultraviolet light from the solid light source 5. The reflection type fluorescent rotor 1 has a conical shape, and the plurality of fluorescent material regions are arranged so that, when an arc of a certain radius in a plane perpendicular to the rotation axis X is drawn on the reflection type fluorescent rotor 1 around the rotation axis X of the reflection type fluorescent rotor 1, a ratio of lengths corresponding to the plurality of the fluorescent material regions on the arc is changed depending on the certain radius. Furthermore, a variable means 6 is provided to vary a position relation of the reflection type fluorescent rotor 1 and the solid light source 5. |
