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:
Jun. 12, 2007
Filed:
Oct. 08, 2003
Hiroyuki Tanaka, Osaka, JP;
Takashi Fukuzawa, Osaka, JP;
Shigeo Kittaka, Osaka, JP;
Leandro DE Castro, Osaka, JP;
Hiroyuki Tanaka, Osaka, JP;
Takashi Fukuzawa, Osaka, JP;
Shigeo Kittaka, Osaka, JP;
Leandro de Castro, Osaka, JP;
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
A filter module is provided for an optical communications system. The filter module includes a lens, three optical fibers, an optical filter, and a mirror. The three optical fibers are arranged on a single side of the lens. The lens includes a first face coated with the optical filter and that faces the mirror. The optical fibers are arranged on a second face of the lens. A cascade of the filter modules are configured to connect and form a multiplexing/demultiplexing unit.