| 摘要 |
A light source device for a projector comprises a plurality of light source structures and a reflecting element, in which each light source structure comprises a first reflector that the inner surface thereof is a semi-elliptical surface, a reflecting portion and a burner. The burner is installed on a focus of the semi-elliptical surface, the reflecting element is disposed on a beam outputting route of at least one of the light source structures. The dispositions of reflecting portion and the semi-elliptical surface are used for allowing each light source structure to provide a semi-conical beam output, and the reflecting element combines the semi-conical beams to a conical beam. Whereby, incident angle distributions of the conical beam the same as single light source can be attained and the illumination brightness can be enhanced.
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