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:
Aug. 02, 2022
Filed:
Jun. 27, 2018
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventor:
Shinichi Sakamoto, Chiba, JP;
Assignee:
FUJIKURA LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01); H01S 3/067 (2006.01); H01S 3/091 (2006.01); H01S 3/094 (2006.01); H01S 3/0941 (2006.01);
U.S. Cl.
CPC ...
H01S 5/0021 (2013.01); H01S 3/06754 (2013.01); H01S 3/0912 (2013.01); H01S 3/0941 (2013.01); H01S 3/094003 (2013.01);
Abstract
A laser device includes: a light source including laser diodes; a processor that holds: a maximum current value of a driving current applied to the laser diodes, and a maximum power value of a power of light emitted from the light source; and a memory, coupled to the processor, that stores a relationship between a magnitude of the driving current, a magnitude of the power of the light, and a degree of deterioration of the light source. The processor further refers to the memory and estimates the degree of deterioration from the maximum current value and the maximum power value.