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. 19, 2011
Filed:
Aug. 03, 2006
Yoshinori Murazaki, Komatsushima, JP;
Yoshiki Sato, Anan, JP;
Yoshinori Murazaki, Komatsushima, JP;
Yoshiki Sato, Anan, JP;
Nichia Corporation, Anan-shi, JP;
Abstract
A light emitting device includes a light emitting elementthat has a light emission peak wavelength in a range from 300 nm to 530 nm, and a phosphorthat absorbs light from the light emitting elementand converts the wavelength of the light to emit light with a light emission peak wavelength different from the light emitting element. The phosphor is represented by the general formula MEuMMOwhere x, m and n fall within ranges 0.0001≦x≦0.3, 1.0≦m≦2.5 and 0≦n≦2.5, Mis at least one element selected from the group consisting of Mg, Ca, Sr, Ba and Zn, Mis at least one element selected from the group consisting of Si, Ge and Sn, and Mis at least one element selected from the group consisting of B, Al, Ga, In and rare earth elements.