Light source unit having wavelength conversion member and projector

摘要

There is provided a light source unit which includes 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 is made up of 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, and a first optical filter which is provided at an output side of the wavelength conversion member which lies opposite to the incident side and which transmits a light component of the light in the second wavelength range which has a wavelength shorter than a third wavelength lying in a wavelength range of the light in the second wavelength range.

主权项

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.