| abstract |
A semiconductor laser device capable of flexibly coping even with a case where a large output power difference is required between a plurality of laser elements having different lasing wavelengths when reproducing white light is obtained. This semiconductor laser device ( 100 ) includes a red semiconductor laser element ( 10 ) having one or a plurality of laser beam emitting portions, a green semiconductor laser element ( 30 ) having one or a plurality of laser beam emitting portions, and a blue semiconductor laser element ( 50 ) having one or a plurality of laser beam emitting portions. At least two semiconductor laser elements among the red semiconductor laser element, the green semiconductor laser element and the blue semiconductor laser element have such a relation that the number of the laser beam emitting portions of the semiconductor laser element emitting a relatively long wavelength is larger than the number of the laser beam emitting portions of the semiconductor laser element emitting a relatively short wavelength. |