LASER BEAM SOURCE DEVICE, PROJECTOR, AND MONITORING DEVICE

PROBLEM TO BE SOLVED: To provide a laser beam source device that can achieve higher output stably inexpensively. SOLUTION: The laser beam source device 10 includes: first and second light emission elements (a first laser diode 12 and a second laser diode 13) which have light emission portions (emitters 18 and 19), a wavelength conversion element 16 which converts incident light into light having a different wavelength, and a wavelength selecting element (wavelength selective mirrors 14 and 15) which transmits one of the laser light converted to the prescribed wavelength and laser light emitted by the light emitting elements and having a fundamental wavelength, and reflects the other. The first light emitting element and the second light emitting element are disposed such that light emitted from the light emission portion of each of the light emission elements can enter the light emission portion of the other light emission element. At least either the first light emission element or the second light emission element has the plural light emission portions, and the areas of the plural light emission portions are not uniform. COPYRIGHT: (C)2011,JPO&INPIT