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:
Apr. 14, 2009
Filed:
Oct. 30, 2006
Masato Fukudome, Kirishima, JP;
Fujito Nakakawaji, Kirishima, JP;
Masanobu Ishida, Kirishima, JP;
Tsutae Iryou, Kirishima, JP;
Masato Fukudome, Kirishima, JP;
Fujito Nakakawaji, Kirishima, JP;
Masanobu Ishida, Kirishima, JP;
Tsutae Iryou, Kirishima, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
In a wavelength converter converting a wavelength of light emitted from a light source and outputting an output light containing light whose wavelength is converted, which comprises a fluorescent substance dispersed in a transparent matrix, the fluorescent substance has semiconductor fine particles containing at least one univalent metal element selected from alkali metal and Ag, an element of group III in the periodic table selected from indium and gallium, and sulfur, and does not substantially contain Cd and Se. Hence, a wavelength converter having a conversion efficiency of equal to or more than that of a converter containing CdSe can be provided by using a semiconductor material formed of a highly safe composition.