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    Laser oscillator, laser machining device in which same is used, and laser oscillation method
    6.
    发明授权
    Laser oscillator, laser machining device in which same is used, and laser oscillation method 有权

    公开(公告)号：US11471978B2

    公开(公告)日：2022-10-18

    申请号：US17013773

    申请日：2020-09-07

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Shinya Domoto ,  Ryo Ishikawa ,  Naoya Kato

    IPC: B23K26/38 ,  B23K26/082 ,  B23K26/06

    Abstract: A laser oscillator includes a plurality of laser modules, beam coupler (12) that couples a plurality of laser beams (LB1 to LB4) emitted from the plurality of laser modules to form a coupled laser beam, beam coupler (12) emitting the coupled laser beam, and a condensing lens unit having a condensing lens, the condensing lens unit condensing the coupled laser beam to have a given beam diameter and guiding the condensed coupled laser beam to a transmission fiber. Beam coupler (12) has optical members (OC1 to OC4) configured to change optical paths of laser beams (LB1 to LB4). By changing the optical paths of laser beams (LB1 to LB4) by optical members (OC1 to OC4,) a beam profile of the coupled laser beam emitted from the transmission fiber is changed without adjusting a position of the condensing lens.

    Laser device
    7.
    发明授权
    Laser device 有权

    公开(公告)号：US11329443B2

    公开(公告)日：2022-05-10

    申请号：US16808441

    申请日：2020-03-04

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Shinya Domoto ,  Naoya Kato ,  Ryo Ishikawa

    IPC: H01S3/034 ,  B23K26/064 ,  B23K26/70 ,  H01S3/067

    Abstract: A laser device includes a laser oscillator that generates a laser beam, condenser lens that condenses laser beam emitted from the laser oscillator, transmission fiber that includes at least core that transmits laser beam condensed by condenser lens, and cladding provided around core, and a lens driving unit that adjusts a position of condenser lens. The lens driving unit automatically adjusts the position of condenser lens to reduce light intensity of laser beam incident on cladding.

    Laser device and laser processing device using same
    9.
    发明授权
    Laser device and laser processing device using same 有权

    公开(公告)号：US11607746B2

    公开(公告)日：2023-03-21

    申请号：US17096228

    申请日：2020-11-12

    Applicant: Panasonic Intellectual Property Management Co., Ltd.

    Inventor： Ryo Ishikawa ,  Shinya Domoto ,  Hideaki Yamaguchi

    IPC: B23K26/04 ,  B23K26/06

    Abstract: A laser device includes a laser oscillator configured to emit a laser beam, and an optical unit configured to receive the laser beam and emit the laser beam outside. The optical unit includes: a partially transmissive mirror configured to reflect a part of the laser beam toward the outside and transmit a remaining part of the laser beam; a diffusion plate configured to diffuse the laser beam which has passed through the partially transmissive mirror and deflect the laser beam in a predetermined direction, at a predetermined diffusion angle; and a photodiode configured to receive the laser beam deflected by the diffusion plate, and output an electric signal. The laser device is configured such that deviation of an optical axis of the laser beam is monitored based on the electric signal of the photodiode.

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