Patent ID: 8733996

Claim:
A light emitting device comprising: a single or a plurality of excitation light source(s), configured to emit excitation light; a single light emitting section configured to emit light upon irradiation with the excitation light; and an optical system configured to guide to a vicinity of the light emitting section a single beam or a plurality of beams of the excitation light emitted from the single or the plurality of excitation light source(s) and configured to irradiate a predetermined light receiving plane of the light emitting section with the single beam or the plurality of beams of the excitation light, in a dispersed manner, wherein the optical system comprises a light guiding member that includes a single or a plurality of entering end(s) configured to receive the excitation light emitted from the single or the plurality of excitation light source(s) and includes a plurality of emitting ends configured to emit the excitation light entered via the single or the plurality of entering end(s), the light receiving plane is irradiated with beams of the excitation light that are emitted from the plurality of emitting ends so that each of a part of the beams of the excitation light having a strongest light intensity in its light intensity distribution is emitted on portions on the light receiving plane different from that of other beams, and the beams of the excitation light that are emitted from the plurality of emitting ends are directed to the single light emitting section.