Laser light source apparatus

A laser light source apparatus comprising:

• a semiconductor laser light source includes a plurality of semiconductor laser array in which a plurality of light-emitting portions are arrayed along a formation direction of an active layer of a semiconductor laser, and said plurality of semiconductor laser arrays are stacked in a direction perpendicular to the formation direction of the active layer;
• a plurality of Fresnel lens patterns arranged in correspondence with the plurality of light-emitting portions to collimate a plurality of semiconductor laser beams emitted from the light-emitting portions, said plurality of Fresnel lens patterns refracting the semiconductor laser beams emitted from the light-emitting portions in directions parallel to and perpendicular to the formation direction of the active layer;
• and
• a plurality of wedge prisms each of which is arranged on an optical path of a semiconductor laser beam, which is shifted from optical axes of the semiconductor laser beams that are parallel to each other and deflects the optical axes of the semiconductor laser beams which are collimated by said plurality of Fresnel lens patterns and made to be parallel to each other, each of said wedge prisms having a wedge angle made by an incident surface on which the semiconductor laser beam becomes incident and an exit surface from which the semiconductor laser beam that becomes incident from the incident surface emerges, and the wedge angle being formed into an angle corresponding to a shift amount from the optical axes of the laser beams that are parallel to each other.