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:
Oct. 07, 2025
Filed:
Feb. 27, 2020
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventors:
Takashi Hasunuma, Sakura, JP;
Shinichi Sakamoto, Sakura, JP;
Yasuto Chiba, Sakura, JP;
Wataru Kiyoyama, Sakura, JP;
Yutaka Yamaguchi, Sakura, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/091 (2006.01); G01J 1/42 (2006.01); H01S 3/094 (2006.01);
U.S. Cl.
CPC ...
H01S 3/0912 (2013.01); G01J 1/4257 (2013.01); H01S 3/094053 (2013.01);
Abstract
A laser device includes at least one light source; a delivery fiber configured to propagate laser light launched from the light source; a monitor fiber optically coupled to the delivery fiber and configured to propagate a part of the light propagating in a direction opposite to a propagation direction of the laser light in the delivery fiber, and a light receiving unit configured to receive the light propagated by the monitor fiber. The light receiving unit is configured to detect first light included in a wavelength band of visible light.