Patent ID: 9563110
Date: 2017-02-07
CPC Classifications: F21V,G02B,G03B

Claim:
1. A light source unit comprising: an excitation light source configured to emit light in a first wavelength range; a wavelength conversion member on which the light in the first wavelength range is incident from an incident side thereof and which comprises a member formed to include a luminescent material mixed therein which emits light in a second wavelength range having its wavelength peak on a longer wavelength side than a wavelength peak of the light in the first wavelength range; a first optical filter which is provided at an output side of the wavelength conversion member which lies opposite to the incident side, wherein the first optical filter transmits a light component of the light in the second wavelength range which has a wavelength shorter than a third wavelength lying in the second wavelength range; and a second optical filter which is provided at an end face of the wavelength conversion member on the incident side, wherein the second optical filter transmits light having a wavelength shorter than a fourth wavelength which is shorter than the third wavelength.