Title:
LASER IRRADIATION METHOD AND LASER IRRADIATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/140217
Kind Code:
A1
Abstract:
The present invention comprises: a photonic-crystal surface-emitting laser (PCSEL) element (110) that emits a laser beam (LB); a laser head (24) that condenses the laser beam (LB) with a condensing lens (27) at optical transmission paths (25, 30) through spatial propagation of the laser beam (LB) emitted from the PCSEL element (110); and movement mechanisms (22, 23, 24) that, through the relative movement, along the optical axis direction of the laser beam (LB), of the condenser lens (27) relative to an irradiation target object (W) of the laser beam (LB), causes the irradiation target object W to be irradiated with the laser beam (LB) condensed by the condenser lens (27) at any irradiation position within a Rayleigh length (ZR) range regardless of a beam waist (BW) position in the optical axis direction of the laser beam (LB).
Inventors:
NODA SUSUMU (JP)
USUDA KAORI (JP)
USUDA KAORI (JP)
Application Number:
PCT/JP2023/000970
Publication Date:
July 27, 2023
Filing Date:
January 16, 2023
Export Citation:
Assignee:
UNIV KYOTO (JP)
AMADA CO LTD (JP)
AMADA WELD TECH CO LTD (JP)
AMADA CO LTD (JP)
AMADA WELD TECH CO LTD (JP)
International Classes:
B23K26/073; B23K1/005; B23K26/08; B23K26/082; F21S2/00; F21V19/02; H01S5/11; H01S5/18; F21Y115/30
Foreign References:
| JP2018129554A | 2018-08-16 | |||
| JP2014113598A | 2014-06-26 | |||
| JP2015162663A | 2015-09-07 | |||
| US20150144604A1 | 2015-05-28 | |||
| JP2018034185A | 2018-03-08 |
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (JP)
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