Patent ID: 8841831
Filing Date: 2014-09-23
Classification: F21K,F21S,F21V,F21Y,H01L

Abstract:
1. A light emitting device comprising: a first luminous body that includes a first light source which emits light in a first wavelength range, and a long wavelength cut-off filter which cuts off light having a wavelength longer than a first set wavelength, the first wavelength range being set arbitrarily, the first set wavelength being set to a wavelength on a long wavelength side in the first wavelength range; and a second luminous body which generates light of different color from that of the first luminous body, and which includes a second light source that emits light in a second wavelength range, and a short wavelength cut-off filter that cuts off light having a wavelength shorter than a second set wavelength, the second wavelength range extending to a longer wavelength side than the first wavelength range while overlapping with the first wavelength range, the second set wavelength being set to a wavelength on a longer wavelength side than the first set wavelength in the second wavelength range, wherein light emitted from the first luminous body and light emitted from the second luminous body are mixed together, such that light is reduced in between the first set wavelength and the second set wavelength.