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:
Apr. 14, 2017
Sun Yat-sen University, Guangdong, CN;
Jing Wang, Guangdong, CN;
Jinbo Yu, Guangdong, CN;
Xuejie Zhang, Guangdong, CN;
Shuaichen Si, Guangdong, CN;
Qiongyun Liang, Guangdong, CN;
Yu Chen, Guangdong, CN;
SUN YAT-SEN UNIVERSITY, Guangdong, CN;
Abstract
The present invention discloses a glass ceramic for excitation of high-power semiconductor light source. An expression of constitution of the glass ceramic is (1−x)A: xB, wherein x as a weight percentage of B, is ranging from 1% to 30%; A as a precursor glass, has a composition of aSbO-bBO-cZnO-dMO, a, b, c, d being molar percentages, a+b+c+d=100%, M among MO represents an alkali metal, and MO is an alkali metallic oxide or an alkali metallic carbonate; and B is a YAG:Cefluorescent powder. The precursor glass provided by the present invention has a relatively low remelting temperature, without devitrification during the process of preparing the final products or absorption of blue light. The product glass ceramic has a luminous efficiency of 300 lm/W to 400 lm/W. A white light semiconductor light source is prepared by the product glass ceramic in combination with the high-power blue light semiconductor light source. A preparation method provided by the present invention has advantages such as low cost, excellent performances, and being green, pollution-free and suitable for the large-scale industrial production. The present invention can be applied in the field of illumination light source and display light source, such as head-lights of vehicles, searchlights, projectors and laser cinemas.