Patent ID: 9657920
Date: 2017-05-23
CPC Classifications: F21Y,G02B,G02F

Claim:
1. An illumination device comprising: a light source that is configured to generate light of a first wavelength; a luminescent body that is configured to wavelength-convert the light of the first wavelength to light of a second wavelength, the second wavelength being different from the first wavelength; a container that accommodates the luminescent body; and a wavelength selective filter that is provided on a portion of an outer surface of the container, the portion includes a light-incident side of the container and at least part of one or more sides of the container which are adjacent to the light-incident side of the container so as to be in direct contact therewith such that a side of the container which is opposite to the light-incident side is not included in the portion, the wavelength selective filter being configured to transmit the light of the first wavelength and to reflect the light of the second wavelength.