| 摘要 |
PROBLEM TO BE SOLVED: To provide a light source device which emits diffuse excitation light and fluorescent light from a phosphor wheel to the same side of the phosphor wheel and condenses both lights as illumination light with a simple structure.SOLUTION: A light source device 100" includes: an excitation light source 5 for generating excitation light; a phosphor wheel 1 having a phosphor which is excited by the excitation light and generates fluorescent light; and a mirror 4 which guides the excitation light 10 from the excitation light source 5 to the phosphor wheel 1, and emits the fluorescent light from the phosphor wheel 1 as illumination light 11'. The phosphor wheel 1 also includes an anisotropic diffusion reflection part 34' which diffuses and reflects the incident excitation light so that a light path of the incident excitation light and a light path of diffuse excitation light after an incidence of the excitation light are not overlapped with each other, and the mirror 4 includes a first region which reflects the excitation light and transmits the fluorescent light, and a second region which transmits the fluorescent light and the diffuse excitation light diffused and reflected by the anisotropic diffusion reflection part 34'. |
