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1. (WO2017155104) LASER LIGHT RADIATION DEVICE AND LASER LIGHT RADIATION METHOD

Pub. No.:    WO/2017/155104    International Application No.:    PCT/JP2017/009764
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Sat Mar 11 00:59:59 CET 2017
IPC: B23K 26/04
B23K 26/064
G02B 5/08
G02B 7/198
H01S 3/10
Applicants: HAMAMATSU PHOTONICS K.K.
浜松ホトニクス株式会社
Inventors: IGASAKI Yasunori
伊ケ崎 泰則
NAKAGAWA Aiko
中川 愛湖
YAMADA Takeshi
山田 丈史
Title: LASER LIGHT RADIATION DEVICE AND LASER LIGHT RADIATION METHOD
Abstract:
A laser machining device is provided with a laser light source, a spatial light modulator having a display unit, an objective lens, an image-transferring optical system, a camera, and a control unit. The control unit executes a first display process and a second display process. The first display process causes the display unit to display a first phase pattern, in which a concentration position of laser light concentrated by the objective lens is set to a first concentration position, when an image is captured by the camera. The second display process causes the display unit to display a second phase pattern, in which the concentration position of laser light concentrated by the objective lens is set to a second concentration position having a different laser-light radiation direction than does the first concentration position, when the image is captured by the camera.