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:
May. 30, 2017
Filed:
Oct. 30, 2013
Denka Company Limited, Tokyo, JP;
Hideyuki Emoto, Tokyo, JP;
DENKA COMPANY LIMITED, Tokyo, JP;
Abstract
Provided is a Li-solid-solubilized α-SiAlON phosphor containing Lisolid-solubilized for stabilization of the structure which is higher in luminous efficiency than any phosphor currently available and a light-emitting element and a lighting device comprising the same. An Eu-activated Li-solid-solubilized α-SiAlON, having a lattice constant a of 0.7820 to 0.7835 nm, a lattice constant c of 0.5645 to 0.5670 nm, an oxygen content of 0.4 to 1.2 mass %, and an europium (Eu) content of 0.3 to 1.2 mass %, and emitting a light having a peak wavelength of 580 to 595 nm in the fluorescence spectrum obtained when it is excited by a monochromatic light having a peak wavelength in the range of 450 to 460 nm.