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:
Oct. 14, 2025
Filed:
Jan. 19, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Shuhei Yamamoto, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
An optical waveguide element of the present disclosure includes: a waveguide for propagating light; a clad including an upper clad whose lower surface is in contact with one surface of the waveguide and whose upper surface exposed to the outside is formed with a rough surface, and a lower clad whose upper surface is in contact with the other surface of the waveguide and whose lower surface is formed with a reflective surface; an incident end surface provided at one end of the waveguide and the clad; and an emission end surface provided at the other end of the waveguide and the clad, whereby incident light is optically coupled to the waveguide with high efficiency.