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. 17, 2022
Filed:
Oct. 30, 2020
Seiko Epson Corporation, Tokyo, JP;
Osamu Okumura, Chino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A wavelength converter according to the present disclosure includes a wavelength conversion layer that has a first surface and a second surface, converts first light that belongs to a first wavelength band into second light that belongs to a second wavelength band, and emits the second light via the first surface, a transparent member having a third surface and a fourth surface, the third surface so provided as to face the first surface of the wavelength conversion layer, and a plurality of nano-antennas provided on the fourth surface of the transparent member. The wavelength conversion layer contains light scatterers, and the plurality of nano-antennas selectively emit third light that belongs to a specific wavelength band out of the second wavelength band along the direction of a normal to the fourth surface.