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:
Jul. 21, 2009
Filed:
Jan. 09, 2007
Takara Sugimoto, Tokyo, JP;
Takara Sugimoto, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An optical module outputting transmitted optical signals from a light-emitting element to an optical fiber and guiding received optical signals arriving from the same optical fiber to a light-receiving element prevents transmitted optical signals originating from the light-emitting element of a local station from coupling to the light-receiving element, devolving into noise and impeding communication. Light-emitting element and light-receiving element are arranged in a positional relationship, whereby the optical axis of light-emitting element and the normal to light-receiving surface of light-receiving element are located in a spatially divergent relationship. Furthermore, it comprises optical path conversion elements which, along with guiding optical signals propagating along receiving optical waveguide to light-receiving surface of light-receiving element, ensures that the image of the light-emitting spot of light-emitting element projected onto a plane including light-receiving surface of light-receiving element does not overlap with light-receiving surface of light-receiving element.