| 摘要 |
A light source device includes: an excitation light source which generates excitation light; a phosphor wheel having a phosphor which is excited by the excitation light to generate fluorescent light; and a mirror which guides excitation light from the excitation light source to the phosphor wheel to emit the fluorescent light from the phosphor wheel as illumination light. The phosphor wheel further includes a diffusion/reflection portion which diffuses and reflects incident excitation light, and the mirror has a first region which reflects the excitation light and transmits the fluorescent light and a second region which transmits the fluorescent light and diffused excitation light. In the mirror, the fluorescent light transmitted through the first region and the fluorescent light and the diffused excitation light transmitted through the second region are used as illumination light. |
