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:
Nov. 19, 2019
Filed:
Oct. 06, 2017
Applicant:
Fuji Xerox Co., Ltd., Tokyo, JP;
Inventors:
Akemi Murakami, Kanagawa, JP;
Junichiro Hayakawa, Kanagawa, JP;
Hideo Nakayama, Kanagawa, JP;
Tsutomu Otsuka, Kanagawa, JP;
Assignee:
FUJI XEROX CO., LTD., Minato-ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/08 (2006.01); H04B 10/07 (2013.01); H04B 10/50 (2013.01); H04B 10/2507 (2013.01); H04B 10/80 (2013.01); H04L 7/00 (2006.01); H01S 5/0625 (2006.01); H04B 10/66 (2013.01); H01S 5/00 (2006.01); H01S 5/42 (2006.01); H01S 5/022 (2006.01); H01S 5/026 (2006.01); H01S 5/028 (2006.01); H01S 5/0683 (2006.01); H01S 5/183 (2006.01); H01S 5/343 (2006.01);
U.S. Cl.
CPC ...
H04B 10/07 (2013.01); H01S 5/0021 (2013.01); H01S 5/0625 (2013.01); H01S 5/423 (2013.01); H04B 10/2507 (2013.01); H04B 10/50 (2013.01); H04B 10/66 (2013.01); H04B 10/801 (2013.01); H04L 7/0075 (2013.01); H01S 5/026 (2013.01); H01S 5/0282 (2013.01); H01S 5/02248 (2013.01); H01S 5/02276 (2013.01); H01S 5/02296 (2013.01); H01S 5/0683 (2013.01); H01S 5/18311 (2013.01); H01S 5/34313 (2013.01); H01S 2301/176 (2013.01); H01S 2304/04 (2013.01); H04B 2210/07 (2013.01);
Abstract
An optical transmission device includes a first light emitting element, a second light emitting element, and a detection unit. The first light emitting element is configured to emit light. The second light emitting element is configured to emit light. The second light emitting element is connected in parallel with the first light emitting element and is configured to deteriorate earlier than the first light emitting element. The detection unit is configured to detect whether the second light emitting element is deteriorated.