Patent ID: 8736966

Claim:
A light source device comprising: a light source main unit made of a combination of a plurality of semiconductor laser devices; a plurality of collimator lenses respectively capable of converting light beams emitted by the respective semiconductor laser devices of the light source main unit to respective approximately parallel light beam fluxes; and a condenser lens capable of condensing light beam fluxes emitted by the plurality of collimator lenses; wherein the semiconductor laser device includes a semiconductor laser element and an I-shape package having a stem and a cap, and the light source main unit has the plurality of semiconductor laser devices arranged such that, when viewed from the condenser lens, the stems of the adjacent semiconductor laser devices are seemingly continuous in a first direction which is a direction perpendicular to the optical axis of the condenser lens, and the stems of the adjacent semiconductor laser devices are overlapped in a second direction perpendicular to both the direction of optical axis and the first direction.