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:
Jul. 28, 2026
Filed:
Jun. 13, 2023
Stanley Electric Co., Ltd., Tokyo, JP;
Kyoto University, Kyoto, JP;
Ryosuke Kamakura, Tokyo, JP;
Yasuyuki Kawakami, Tokyo, JP;
Yosuke Maemura, Tokyo, JP;
Keijiro Takashima, Tokyo, JP;
Shunsuke Murai, Kyoto, JP;
KYOTO UNIVERSITY, Kyoto, JP;
STANLEY ELECTRIC CO., LTD., Tokyo, JP;
Abstract
A wavelength conversion device includes a flat plate-shaped phosphor portion, a first nanoantenna group, a translucent body portion, and a second nanoantenna group. The flat plate-shaped phosphor portion includes a phosphor to be excited by an excitation light to emit a fluorescence. The first nanoantenna group is provided at a lower surface side of the phosphor portion and includes a plurality of first metal nanoantennas arranged at a first pitch. The translucent body portion is filled between adjacent first nanoantennas, formed on the lower surface of the phosphor portion to cover the lower surface of the phosphor portion, and made of a translucent material. The second nanoantenna group is provided on an upper surface of the phosphor portion and includes a plurality of second metal nanoantennas arranged at a second pitch on the upper surface of the phosphor portion.