Patent ID: 6943957

Claim:
A shaping optical system for a laser bar layered product for shaping a laser beam from a laser bar layered product in which a plurality of laser bars, each of which is comprised of a plurality of semiconductor laser elements arrayed one-dimensionally, are layered along a direction which is perpendicular to both the array direction of said semiconductor laser elements and the laser beam traveling direction, comprising: a refracting optical system, a first laser beam group being at one side of a boundary line, a second laser beam group being at the other side of the boundary line, the boundary line being along said direction of layering, said second laser beam group being relatively shifted together with respect to said first laser beam group along the direction of said layering; and a transmission/reflecting optical system, which transmits and reflects said first and second laser beam groups so that said shifted first and second laser beam groups align along said direction of layering.