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:
Nov. 23, 2021
Filed:
Jul. 19, 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 wavelength conversion member including a phosphor, and for converting excitation light into first light, a first light source section for emitting the excitation light, a second light source section for emitting second light, and a color combining element for generating composite light. The wavelength conversion member has first and second end surfaces, and a side surface. The excitation light enters the wavelength conversion member from the side surface, and the first light is emitted from the first end surface. The color combining element has first and second surfaces parallel to each other, and a third surface. The first light emitted from the wavelength conversion member enters the color combining element from the first surface, the second light emitted from the second light source section enters the color combining element from the third surface, and the composite light is emitted from the second surface.