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. 22, 2013
Filed:
Dec. 14, 2009
Akiko Nagafuji, Ibaraki, JP;
Yusuke Shimizu, Ibaraki, JP;
Akiko Nagafuji, Ibaraki, JP;
Yusuke Shimizu, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, Osaka, JP;
Abstract
In an optical waveguidewith a light emitting device to be used in the present invention, branched pointsare sequentially provided in a guiding light directionof a main pathand the width of the main pathbecomes narrower as the main pathmoves away from a light emitting device. The optical waveguidehaving this structure can reduce a width Wbecause there are no portions that correspond spaces (cladding layers) among adjacent branched paths. Moreover, the optical waveguidehas an excellent optical transmission efficiency, resulting in high intensity of light emitted. Uniformity of the light emitted is equal or more than a conventional optical waveguidewith a light emitting device.