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:
Dec. 31, 2024
Filed:
Feb. 04, 2022
Seiko Epson Corporation, Tokyo, JP;
Koichi Akiyama, Azumino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A light source apparatus includes a light source, a wavelength conversion layer, a substrate, a first optical member having a first optical layer that transmits first light and reflects second light, second and third optical members having second and third optical layers that reflect the first light and the second light and intersect with the first optical layer, and a fourth optical layer reflects the first light and transmits the second light. The first optical member includes a fifth optical layer that transmits the first light polarized is a first direction. The first optical layer reflects part of the first light emitted from the wavelength conversion layer. First area of a light incident surface of the wavelength conversion layer is greater than second area of a light incident region of the light incident surface. The second area of the light incident region is greater than third area of an aperture.