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. 23, 2005
Filed:
Nov. 01, 2002
Hideo Kikuchi, Tokyo, JP;
Junichi Sasaki, Tokyo, JP;
Seiji Suda, Tokyo, JP;
Mikio Oda, Tokyo, JP;
Hikaru Kouta, Tokyo, JP;
Sakae Kitajo, Tokyo, JP;
Yuzo Shimada, Tokyo, JP;
Hideo Kikuchi, Tokyo, JP;
Junichi Sasaki, Tokyo, JP;
Seiji Suda, Tokyo, JP;
Mikio Oda, Tokyo, JP;
Hikaru Kouta, Tokyo, JP;
Sakae Kitajo, Tokyo, JP;
Yuzo Shimada, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
An optical waveguide board is provided which includes a substrate, an optical path changing unit being formed on the substrate used to change a direction of an optical path of incident light from a direction being vertical to a surface of the substrate to a direction being horizontal to the surface of the substrate and to condense a luminous flux and an optical waveguide being formed on the substrate to carry out multi-mode transmission of a luminous flux fed from the optical path changing unit wherein, based on a spread angle of the luminous flux formed by the optical path changing unit, mainly light components to be transmitted in a zero-order mode to a three-order mode only, out of various kinds of modes for the multi-mode transmission, is transmitted through the optical waveguide.