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. 30, 2025
Filed:
Jun. 29, 2023
Seiko Epson Corporation, Tokyo, JP;
Koichi Akiyama, Azumino, JP;
SEIKO EPSON CORPORATION, Tokyo, JP;
Abstract
A wavelength converter includes, a first optical member including a first optical layer that transmits first light, a wavelength conversion layer that is disposed at a substrate, has a light incident surface, and converts the first light into second light, a light emitting portion, and a second optical member disposed at the light emitting portion and including a second optical layer that reflects the first light and transmits the second light. The first optical layer inclines with respect to the light incident surface and reflects the second light. The wavelength conversion layer includes a first layer that the first light having passed through the first optical layer enters, and a second layer which the first light having passed through the first layer enters. The second layer scatters the first light by a degree greater than the degree by which the first layer scatters the first light.