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:
Apr. 21, 2026
Filed:
Jun. 30, 2021
Nitto Denko Corporation, Ibaraki, JP;
Kazuaki Suzuki, Ibaraki, JP;
Naoto Konegawa, Ibaraki, JP;
Tadao Okawa, Ibaraki, JP;
Koji Ichinose, Ibaraki, JP;
NITTO DENKO CORPORATION, Osaka, JP;
Abstract
An optical module includes: an electric circuit board E including an electric circuit provided on a light-permeable resin substrate; and an optical elementjoined onto the electric circuit board E. The optical elementis joined to the electric circuit board E, with a light-emitting portion (or light-receiving portion)of the optical elementfacing an electric circuit surface side of the electric circuit board E. A space between the light-emitting portion (or light-receiving portion)of the optical elementand the light-permeable resin substrateis filled with a light-permeable resin cured material X. A relative refractive index difference between the light-permeable resin cured material X and the light-permeable resin substrateis not greater than 20%. This reduces the propagation loss of light with a simple structure.