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:
Mar. 03, 2020
Filed:
Sep. 20, 2017
Nippon Electric Glass Co., Ltd., Otsu-shi, Shiga, JP;
Tadahito Furuyama, Otsu, JP;
Shunsuke Fujita, Otsu, JP;
NIPPON ELECTRIC GLASS CO., LTD., Shiga, JP;
Abstract
Provided is a wavelength conversion member that can increase the light extraction efficiency to improve the luminous efficiency. A wavelength conversion memberincludes: a phosphor layercontaining a glass matrix and inorganic phosphor powder dispersed in the glass matrix; a glass layerdisposed on a surface of the phosphor layerand having a refractive index equal to or smaller than a refractive index of the inorganic phosphor powder; and a microscopically uneven layerdisposed on a surface of the glass layerand having a refractive index equal to or smaller than the refractive index of the glass layer