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. 11, 2025
Filed:
Sep. 05, 2022
Kyocera Corporation, Kyoto, JP;
KYOCERA Corporation, Kyoto, JP;
Abstract
A light-emitting device includes an optical waveguide package, a light-emitting element in an element mount, and a lid covering the element mount. The optical waveguide package includes a substrate including a first surface, a cladding on the first surface and including a second surface facing the first surface, a third surface opposite to the second surface, and the element mount with an opening in the third surface, and a core in the cladding. The cladding includes a first portion having the core inside, and a second portion facing the first portion across the element mount. The first portion includes a plurality of first protrusions in an area of the third surface corresponding to the first portion. The second portion includes a plurality of second protrusions in an area of the third surface corresponding to the second portion.