公开(公告)号：US20250001519A1

公开(公告)日：2025-01-02

申请号：US18291456

申请日：2022-08-30

Applicant: KATAOKA CORPORATION

Inventor： Osamu ENDO ,  Shinichi NAKASHIBA

IPC: B23K26/06 ,  B23K26/046 ,  B23K26/073 ,  B23K26/082 ,  B23K26/382 ,  B23K101/36

Abstract: A laser processing apparatus for processing a workpiece by applying laser beam to the workpiece, including: a laser oscillator capable of emitting laser beam; a beam rotator that converts the laser beam emitted from the laser oscillator into a circular beam having a predetermined diameter; a beam shaper on which the circular beam emitted from the beam rotator is incident and from which a polygonal beam is emitted; and a focusing optical system that focuses the polygonal beam emitted from the beam shaper on the workpiece, wherein the beam shaper is a DOE-type beam shaper, and the outer peripheral diameter of the circular beam incident on the DOE-type beam shaper is larger than a standard incident beam diameter preset for the DOE-type beam shaper.

公开(公告)号：US20230092230A1

公开(公告)日：2023-03-23

申请号：US17610950

申请日：2021-06-08

Applicant: KATAOKA CORPORATION

Inventor： Shinichi NAKASHIBA ,  Osamu ENDO

IPC: B23K26/06 ,  B23K26/062 ,  B23K26/082 ,  B23K26/08 ,  B23K26/384 ,  B23K26/388 ,  B23K26/70

Abstract: A laser processing machine including: a laser source that emits a laser beam; a polarization rotator unit; a beam rotator unit; a lens; and a controller, which apply the laser beam to a workpiece, the polarization rotator unit includes a wave plate and first actuator that rotates the wave plate, the beam rotator unit includes an optical system that adjusts an irradiation angle of the laser beam to the workpiece by making an incident laser beam eccentric to output and making the laser beam incident on the lens at a position eccentric from a central axis, a second actuator rotates the optical system, the lens condenses the laser beam on the workpiece, the controller controls a rotational speed ratio between the first actuator and the second actuator, and adjusts a polarized state of the laser beam by controlling the rotational speed ratio.