公开(公告)号：US10898970B2

公开(公告)日：2021-01-26

申请号：US16621955

申请日：2018-05-23

申请人： AMADA HOLDINGS CO., LTD.

发明人： Hiroaki Ishiguro ,  Ryouhei Ito ,  Tetsuya Kobayashi

IPC分类号： B23K26/066 ,  B23K26/06 ,  B23K26/70 ,  B23K26/073 ,  B23K26/21 ,  B23K26/359 ,  B23K26/38

摘要： A profile selector includes at least one beam-forming lens refracting a laser beam to be incident so as to convert a beam profile and emits a laser beam having a beam profile selected from a plurality of beam profiles. A collimating lens converts a laser beam of a divergent beam to be incident into collimated light. A focusing lens focuses the collimated light emitted from the collimating lens and irradiates the focused beam to a sheet metal of a processing target. A moving mechanism moves the collimating lens along an optical axis such that a deviation of a focal point is reduced caused when the beam profile of the focused beam emitted from the focusing lens is selected by the profile selector.