Patent ID: 8662678

Claim:
A solid-state light source device, comprising: a solid-state light emitting portion, which is configured to emit excitation light therefrom; a beam condensing portion, which is configured to condense the excitation light from said solid-state light emitting portion to be point-like; a reflecting/scattering and wavelength converting portion, which is configured to repeat reflection/scattering of said excitation light and conversion of said excitation light, alternately, in vicinity of a focus point of the excitation light, which is condensed to be point-like by said beam condensing portion; and a portion, which is configured to take out the excitation light reflected/scattered by said reflecting/scattering and wavelength converting portion, and the excitation lights converted in wavelength thereof by said reflecting/scattering and wavelength converting portion, on a same optical path, thereby outputting a white color light emitting, approximately, from a point light source, wherein: said reflecting/scattering and wavelength converting portion has a reflecting/scattering surface and a fluorescence surface made of a fluorescent substance, formed on a base member, and repeats the reflection/scattering of said excitation light and the conversion of said excitation light, alternately, through shifting of said base member, and in a portion where said reflecting/scattering surface and said fluorescent substance are formed, on the surface of said base member, and also in vicinity of the focus point of said excitation light condensed to be point-like are formed a large number of miniature pits for giving a direction to the scattering light from said reflecting/scattering surface or said fluorescent substance in vicinity of said focus point.