Patent ID: 8459842

Claim:
A light source device comprising: a microwave power source which generates microwaves; a central microwave conductor which radiates the microwaves with a wavelength λ; a light emitter which emits light by receiving the microwaves, the light emitter including a sealing part and at least one light conductor; a light emitting component adapted to emit the light, the light emitting component being sealed within the sealing part; a U-shaped reflector that reflects the light, the reflector having a curved part and a cylindrical part extending from the curved part, the curved part having a hole therein, the cylindrical part defining an opening opposite the curved part, at least a portion of the reflector being made of a conductive material, wherein the central microwave conductor and the light emitter are spaced apart from each other, the central microwave conductor is inserted in the hole of the reflector, the opening is at an end of the cylindrical part and has an internal diameter D, the light emitter is fixed to an internal surface of the cylindrical part of the reflector and has a distance L between the opening and an edge of the sealing part, and D ≦λ/2 and L/D ≧0.8.