Patent ID: 8735769

Claim:
A laser processing head comprising: a laser emitting unit for irradiating a workpiece with a laser light; and a powder feeder disposed around a periphery of the laser emitting unit for discharging filler material powder to the workpiece, wherein the powder feeder includes: a position adjustment mechanism for adjusting a position where the powder concentrates; and a powder concentration diameter adjustment mechanism for adjusting a diameter of the filler material powder on the workpiece, the laser processing head further comprising a controller for controlling the position adjustment mechanism and the powder concentration diameter adjustment mechanism, wherein: the powder feeder comprises a plurality of tubular elements disposed such that the filler material powder is discharged from the tubular elements in a form of a concentric circle with a laser optical axis as a center; the powder concentration diameter adjustment mechanism is a mechanism for adjusting angles of the tubular elements with respect to the laser optical axis, and the plurality of tubular elements have at least two kinds of shapes.