| 摘要 |
PROBLEM TO BE SOLVED: To provide a semiconductor laser device capable of obtaining high laser output by making laser light incident to an optical fiber at a high convergence rate while preventing the semiconductor laser device from being enlarged.SOLUTION: The semiconductor laser device comprises a plurality of semiconductor laser elements including a plurality of light-emitting parts arranged linearly. A condenser lens is provided to which laser light from the plurality of semiconductor laser elements is made incident via a collimate member, and an optical fiber is provided to which light from the condenser lens is made incident. An optical axis of laser light made incident to an edge of the condenser lens within a region of an effective lens diameter is inclined with respect to an optical axis of the condenser lens in such a direction that the optical axis of the laser light approaches the optical axis of the condenser lens, as it is closer to the condenser lens. |
