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:
Jan. 21, 2020
Filed:
Feb. 21, 2017
Nec Corporation, Tokyo, JP;
Yurie Matsuyama, Tokyo, JP;
Takefumi Oguma, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
[Problem] To provide an optical device capable of suppressing an optical signal from being trimmed because of band narrowing due to optical filters. [Solution] An optical device according to the present invention is provided with a plurality of optical filters each of which filters an optical signal in a predetermined band out of a plurality of optical signals with wavelengths different from one another. The plurality of optical filters are configured in such a way that portions of the pass bands (___) of respective optical filters that respectively pass optical signals (___) with wavelengths adjacent to each other overlap each other.