METHOD AND DEVICE OF LASER WELDING

Japanese Patent JP3862664

B2

PROBLEM TO BE SOLVED: To provide a method and device of laser welding wherein a welding nugget diameter is ≤100 μm, welding in a microscopic area having a welding depth ≥200 μm is realized, and the device is downsized.
SOLUTION: The laser welding method includes: making a laser beam outputted by a laser beam generating means 1 enter an optical fiber 10 via an incident optical unit 9; and irradiating a welding part with the laser beam emitted from the optical fiber 10 via an emission optical unit 11. In this method, a core diameter of the optical fiber 10 is made ≤100 μm, an incident NA value of the optical fiber 10≤0.05, and an emission NA value of the optical fiber 10≤0.1. Further, energy of the one pulse leaser beam to be emitted from the emission optical unit 11 is one joule (J) or less.

JPH09510684	The holder used for annealing of an optical fiber coil
WO/2003/083540	LONG PERIOD CHIRAL FIBER GRATING APPARATUS
WO/2009/157977	PRE-FORM FOR AND METHODS OF FORMING A HOLLOW-CORE SLOTTED PBG OPTICAL FIBER FOR AN ENVIRONMENTAL SENSOR

Shinichi Nakayama
Takahiro Nagashima

JP2003075004A

December 27, 2006

March 19, 2003

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Miyachi Technos Co., Ltd.

G02B6/02; B23K26/00; B23K26/064; B23K26/21; (IPC1-7): B23K26/08; B23K26/00; B23K26/06; G02B6/02

JP2002283086A
JP2000321470A
JP8267264A
JP2003285189A

長嶋崇弘・中山伸一,エレクトロニクスの溶接・接合技術 マイクロ部品向け微細溶接用レーザ装置について,溶接技術,日本,産報出版株式会社,2003年 4月 1日,第51巻,第4号,P.67-70

Shunsuke Nakao
Takashi Ito
Naoko Okura
Fumari Tamari
Takeyuki Suzuki
Shiro Isoda

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