Patent ID: 9194560
Filing Date: 2015-11-24
Classification: F21V,G03B

Abstract:
1. A light source device comprising: a first light source which emits an excitation light; a second light source which emits light of a first wavelength bandwidth; a third light source which emits light of a second wavelength bandwidth different from the first wavelength bandwidth, the third light source including a plurality of light emitting sources which are arranged adjacent to each other via the second light source; a fluorescent material which receives the excitation light from the first light source to emit generated light of a third wavelength bandwidth different from the first and second wavelength bandwidths; and a dichroic mirror which transmits the light of the first wavelength bandwidth and reflects the light of the third wavelength bandwidth, wherein the dichroic mirror is constituted such that (i) the excitation light emitted from the first light source is transmitted through the dichroic mirror and applied to the fluorescent material, (ii) the light of the first wavelength bandwidth emitted from the second light source is transmitted through the dichroic mirror and emitted in a predetermined emitting direction, (iii) the generated light emitted from the fluorescent material is reflected by the dichroic mirror and emitted in the predetermined emitting direction, (iv) the light of the second wavelength bandwidth from at least a first light emitting source of the third light source which is disposed on a first side of the second light source passes outside of the dichroic mirror without entering the dichroic mirror and is emitted in the predetermined emitting direction, and (v) at least a part of the light of the second wavelength bandwidth from at least a second light emitting source of the third light source which is disposed on the other side of the second light source is transmitted through the dichroic mirror and emitted in the predetermined emitting direction.