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:
May. 31, 2022
Filed:
Mar. 22, 2021
Seiko Epson Corporation, Tokyo, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A light source device according to the present disclosure includes a first light source, a second light source, a wavelength conversion section, a polarization splitting/combining element, a dichroic mirror for reflecting second light and transmitting third light emitted from the wavelength conversion section, a retardation plate, a diffusion section, and a condensing optical section. Condensing optical section has a first end part, a second end part, and a reflecting part. Second light proceeding via the polarization splitting/combining element is transmitted through the condensing optical section from the second end part toward the first end part, and then enters the dichroic mirror. Second light reflected by the dichroic mirror passes through the condensing optical section and then enters the polarization splitting/combining element. Third light passes through the condensing optical section and then enters the polarization splitting/combining element. Polarization splitting/combining element combines the second light and the third light with each other.