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:
Mar. 29, 2022
Filed:
Jul. 29, 2019
Seiko Epson Corporation, Tokyo, JP;
Hidefumi Sakata, Kamiina-gun, JP;
Junichi Suzuki, Matsumoto, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A light source device includes a light source that emits first and second excitation lights, a first wavelength conversion section including a first phosphor, and configured to convert the first excitation light into first fluorescence having a first wavelength band, a second wavelength conversion section including a second phosphor, and configured to convert the second excitation light into second fluorescence having a second wavelength band, and a light combining section that combines the first fluorescence and the second fluorescence. A first side surface of the first wavelength conversion section and a second side surface of the second wavelength conversion section are opposed to each other, the first fluorescence is emitted from a first end surface of the first wavelength conversion section toward the light combining section, and the second fluorescence is emitted from a first end surface of the second wavelength conversion section toward the light combining section.