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:
Jul. 04, 2023
Filed:
Jul. 15, 2022
Seiko Epson Corporation, Tokyo, JP;
Masaya Masuda, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A wavelength converter includes a base having a first surface, a wavelength conversion part that has a second surface facing the first surface and converts first light that belongs to a second wavelength band into fluorescence that belongs to a second wavelength band different from the first wavelength band, junctions that join the wavelength conversion part and the base to each other, and an air layer located in a region that the first light enters and surrounded by the wavelength conversion part, the base, and the junctions. The first surface of the base has a first region curved in a direction, and the second surface of the wavelength conversion part has a second region facing the first region and curved in the same direction.