| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device that can efficiently use emission light of a fluorescent substance without substantial loss of the emission light thereof.SOLUTION: As the light source device, a light source part 15 comprises: a first light source 110 that injects blue excitation light; a second light source 120 that injects red light; a fluorescent substance unit 160 that includes a fluorescent substance receiving the excitation light to inject emission light having a wide wavelength distribution containing a lot of green wavelength components; a visible light reflection film that reflects visible light; and a synthesized member 140 that has a transmission window 142 transmitting the visible light provided in the visible light reflection film. The second light source 120, the fluorescent substance unit 160 and the synthesized member 140 are arranged at a position relation with each other such that the transmission window 142 of the synthesized member 140 is positioned on an optical axis of the red light and the emission light is reflected in the optical axis direction of the red light by the visible light reflection film of the synthesized member 140. |
