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:
Feb. 26, 2008
Filed:
Nov. 17, 2006
Yusuke Terada, Yokohama, JP;
Yutaka Natsume, Yokohama, JP;
Yusuke Terada, Yokohama, JP;
Yutaka Natsume, Yokohama, JP;
Omron Corporation, Kyoto-shi, JP;
Abstract
An optical branching unit according to the invention, has on a substrate, a light input part which inputs light, an optical branch which branches the light input to the light input part at a predetermined ratio, a light output part which guides the light branched by the optical branch to a predetermined position, and a dummy pattern which is provided on a substrate independently of an area provided with the light input part, optical branch and light output part, made of the same material as the light input part, optical branch and light output part, and defined to have an area, so that an occupation rate, or a ratio of the dummy pattern to the area of a substrate except the light input part, optical branch and light output part, is 70% or higher.