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Title:
LASER PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/149449
Kind Code:
A1
Abstract:
A transmission fiber 20 includes a first core 21 and a second core 22. The second core 22 is provided on an outer circumferential portion of the first core 21. In a first step of a laser startup step, a first laser beam L1 is emitted from the first core 21. In a second step, the first laser beam L1 is emitted from the second core 22, and a second laser beam L2 is emitted from the first core 21. In a third step, a power output of the second laser beam L2 emitted from the first core 21 is gradually increased while an emission position of the first laser beam L1 and the second laser beam L2 with respect to a workpiece W is moved in a laser processing direction.

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Inventors:
NAKAGAWA TATSUYUKI
KAWAMOTO ATSUHIRO
FUJIWARA JUNJI
SAKURAI MICHIO
Application Number:
PCT/JP2023/003153
Publication Date:
August 10, 2023
Filing Date:
February 01, 2023
Export Citation:
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Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B23K26/064; B23K26/00
Domestic Patent References:
WO2017134964A12017-08-10
WO2019176502A12019-09-19
Foreign References:
JP2018174059A2018-11-08
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
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