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. 09, 2024
Filed:
Mar. 29, 2022
Seiko Epson Corporation, Tokyo, JP;
Fumika Yamada, Shiojiri, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A light source device includes a light source configured to emit excitation light, a phosphor which the excitation light enters, the phosphor being configured to emit fluorescence different in wavelength from the excitation light, a plurality of first nanoantennas provided to the phosphor, and a plurality of second nanoantennas provided to the phosphor. Each of the first nanoantennas is formed of metal. Each of the second nanoantennas is formed of a material higher in melting point than the metal. An arrangement area of the plurality of second nanoantennas overlaps an irradiation area with the excitation light in a plan view viewed from a normal direction of the phosphor. An electric field enhancement of the fluorescence is achieved by each of the first nanoantennas and each of the second nanoantennas.