| 摘要 |
PROBLEM TO BE SOLVED: To provide a wavelength conversion element extending a permissible range of converted wavelength even when various wavelengths are outputted from every light emitting part without reducing total conversion efficiency, to provide a light source device and to provide a projector. SOLUTION: In the wavelength conversion element receiving a plurality of laser beams emitted from a plurality of light emitting parts and converting the plurality of respective laser beams into laser beams having a prescribed wavelength to emit it, a plurality of beam passing regions L are provided corresponding to the plurality of respective light emitting parts, the plurality of light passing regions L have repetitive structures of domains having reversed polarization along center axes of the laser beams emitted from the plurality of light emitting parts and widths in the center axis directions of the laser beams of the respective domains of the plurality of beam passing regions L are different along an arrangement direction K of the plurality of light emitting parts. COPYRIGHT: (C)2008,JPO&INPIT
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