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:
Aug. 05, 2025
Filed:
Mar. 30, 2021
Nichia Corporation, Anan, JP;
Eri Matsuka, Anan, JP;
Makiko Iwasa, Anan, JP;
NICHIA CORPORATION, Anan, JP;
Abstract
A wavelength conversion member includes: a light-transmissive member; and a wavelength conversion material located on a surface of the light-transmissive member and including: a resin, a phosphor with a median particle diameter of 10 μm or more and 30 μm or less, wherein an amount of the phosphor in the wavelength conversion material is 165 parts by mass or more and 400 parts by mass or less relative to 100 parts by mass of the resin, and a filler with a median particle diameter of 5 μm or more and 40 μm or less, wherein an amount of the filler in the wavelength conversion material is 5 parts by mass or more and 90 parts by mass or less relative to 100 parts by mass of the resin. A mixture volume ratio of the phosphor and the filler to the resin is 0.5 or more and 1.0 or less.