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:
Dec. 06, 2016
Filed:
Dec. 28, 2012
Hitachi Chemical Company, Ltd., Tokyo, JP;
Daichi Sakai, Ibaraki, JP;
Toshihiro Kuroda, Ibaraki, JP;
Hiroshi Betsui, Ibaraki, JP;
Kouta Segawa, Ibaraki, JP;
Masao Uchigasaki, Ibaraki, JP;
HITACHI CHEMICAL COMPANY, LTD., Tokyo, JP;
Abstract
The optical waveguide includes: a lower clad layer, a core layer, an upper clad layer, a substrate, and a mirror, the lower clad layer, the core layer, and the upper clad layer being sequentially laminated to the substrate, the mirror being formed on the core layer, in which the substrate has an opening, the maximum diameter of the opening is larger than that of luminous flux reflected by the mirror, and the maximum diameter of the opening is 240 μm or less. The optical waveguide is capable of transmitting a light signal regardless of the type of the substrate, suppressing the spread of a light signal reflected from the mirror, and transmitting a light signal with a low optical transmission loss.