| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a light source device capable of reliably reducing speckle noise by reducing coherence of output laser light, depending on the presence of an external cavity type laser light source. <P>SOLUTION: The light source device includes a first light emitting element 12 having an emitter 22 for emitting laser light, and a second light emitting element having emitters 23 each arranged so that the laser light emitted from the emitter 22 can be incident. The emitters 23 are arranged so that the emitted laser light can be incident in the emitter 22, and a wavelength selecting element 17 having spatial different selecting wavelength is disposed on an optical path between the emitter 22 and the two different emitters 23. <P>COPYRIGHT: (C)2011,JPO&INPIT |
