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.

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.

公开(公告)号：US11904406B2

公开(公告)日：2024-02-20

申请号：US17877348

申请日：2022-07-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naoya Kato ,  Takayuki Yamashita ,  Doukei Nagayasu ,  Kenji Hoshino ,  Hideaki Yamaguchi ,  Ryo Ishikawa ,  Shinya Domoto ,  Kiyotaka Eizumi

IPC: B23K26/06 ,  B23K26/70 ,  B23K26/066 ,  B23K26/10 ,  B23K26/12

CPC classification number: B23K26/0626 ,  B23K26/066 ,  B23K26/0648 ,  B23K26/10 ,  B23K26/128 ,  B23K26/706

Abstract: Laser processing head (20) of the present disclosure includes housing (30), transparent protector (40), and temperature sensor (70). Housing (30) includes an optical path of processing laser light (LB). Transparent protector (40) is detachably fixed to housing (30), passes processing laser light (LB), and suppresses dust of work material (W) entering into housing (30). Here, the dust is generated from the work material (W) irradiated with processing laser light (LB). Temperature sensor (70) detects the temperature of transparent protector (40).

公开(公告)号：US11471973B2

公开(公告)日：2022-10-18

申请号：US16821302

申请日：2020-03-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naoya Kato ,  Takayuki Yamashita ,  Doukei Nagayasu ,  Kenji Hoshino ,  Hideaki Yamaguchi ,  Ryo Ishikawa ,  Shinya Domoto ,  Kiyotaka Eizumi

IPC: B23K26/06 ,  B23K26/066 ,  B23K26/70 ,  B23K26/10 ,  B23K26/12

Abstract: Laser processing head (20) of the present disclosure includes housing (30), transparent protector (40), and temperature sensor (70). Housing (30) includes an optical path of processing laser light (LB). Transparent protector (40) is detachably fixed to housing (30), passes processing laser light (LB), and suppresses dust of work material (W) entering into housing (30). Here, the dust is generated from the work material (W) irradiated with processing laser light (LB). Temperature sensor (70) detects the temperature of transparent protector (40).