Light source device

摘要

A light source device includes an excitation light source that generates excitation light, a phosphor wheel including a phosphor segment that generates fluorescent light by excitation of the excitation light, and a mirror that guides the excitation light from the excitation light source to the phosphor wheel and emits the fluorescent light from the phosphor wheel as illumination light. The phosphor wheel further includes an anisotropic diffusion and reflection unit that diffuses and reflects incident excitation light such that an optical path for the incident excitation light and an optical path for the diffused excitation light after incidence of the excitation light are not overlapped. The mirror includes a first region that reflects the excitation light and transmits the fluorescent light and a second region that transmits the fluorescent light and the diffused excitation light which the anisotropic diffusion and reflection unit has diffused and reflected.

主权项

1. A light source device, comprising:
an excitation light source configured to generate excitation light; a phosphor wheel including a phosphor segment configured to generate fluorescent light by excitation of the excitation light from the excitation light source; and a mirror configured to guide the excitation light from the excitation light source to the phosphor wheel and emit the fluorescent light from the phosphor wheel as illumination light, wherein the phosphor wheel further includes an anisotropic diffusion and reflection unit configured to diffuse and reflect incident excitation light so that an optical path of the incident excitation light and an optical path of diffused excitation light after the incidence of the excitation light are not overlapped; and the mirror includes a first region configured to reflect the excitation light and transmit the fluorescent light, and a second region configured to transmit the fluorescent light and the diffused excitation light which the anisotropic diffusion and reflection unit has diffused and reflected, the first region comprising a plurality of parts arranged in a checkerboard pattern disposed at the center of the mirror.