The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2021
Filed:
Oct. 23, 2018
Applicant:
Keyence Corporation, Osaka, JP;
Inventors:
Masao Sato, Osaka, JP;
Tatsuaki Nagai, Osaka, JP;
Assignee:
KEYENCE CORPORATION, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/11 (2006.01); G02B 26/10 (2006.01); H01S 3/042 (2006.01); H01S 3/08 (2006.01); H01S 3/091 (2006.01); H01S 3/0941 (2006.01); B23K 26/36 (2014.01); H01S 3/04 (2006.01); H01S 3/00 (2006.01); H01S 3/06 (2006.01); H01S 3/16 (2006.01); B23K 26/082 (2014.01); H01S 3/109 (2006.01); H01S 3/02 (2006.01); H01S 3/081 (2006.01); H01S 3/10 (2006.01); H01S 3/102 (2006.01);
U.S. Cl.
CPC ...
H01S 3/11 (2013.01); B23K 26/082 (2015.10); B23K 26/36 (2013.01); G02B 26/101 (2013.01); H01S 3/0071 (2013.01); H01S 3/02 (2013.01); H01S 3/025 (2013.01); H01S 3/042 (2013.01); H01S 3/0405 (2013.01); H01S 3/061 (2013.01); H01S 3/08013 (2013.01); H01S 3/0912 (2013.01); H01S 3/0941 (2013.01); H01S 3/109 (2013.01); H01S 3/1611 (2013.01); H01S 3/1673 (2013.01); H01S 3/005 (2013.01); H01S 3/0815 (2013.01); H01S 3/09415 (2013.01); H01S 3/1022 (2013.01); H01S 3/10069 (2013.01);
Abstract
To appropriately change an output of laser light without deteriorating laser characteristics. A control section of a laser machining device controls, when a target output is larger than a predetermined threshold, an output of laser light by changing a driving current supplied to an excitation light source and, on the other hand, controls, when the target output is equal to or smaller than the threshold, the output of the laser light by changing a duty ratio of a Q switch while keeping the driving current supplied to the excitation light source substantially fixed.