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:
Jul. 20, 2010
Filed:
Sep. 28, 2005
Atsutomo Hama, Anan, JP;
Tomotaka Honda, Anan, JP;
Shinichi Nagahama, Tokushima, JP;
Junji Takeichi, Anan, JP;
Yoshinori Murazaki, Komatsushima, JP;
Hiroto Tamaki, Anan, JP;
Yukihiro Hayashi, Tokushima, JP;
Atsutomo Hama, Anan, JP;
Tomotaka Honda, Anan, JP;
Shinichi Nagahama, Tokushima, JP;
Junji Takeichi, Anan, JP;
Yoshinori Murazaki, Komatsushima, JP;
Hiroto Tamaki, Anan, JP;
Yukihiro Hayashi, Tokushima, JP;
Nichia Corporation, Anan-shi, JP;
Abstract
A light emitting device, comprises: an excitation light source that emits excitation light; a wavelength conversion member that absorbs the excitation light emitted from the excitation light source, converts its wavelength, and releases light of a predetermined wavelength band; a light guide in which the center part (core) of its cross section has a refractive index that is higher than the refractive index of the peripheral portion (cladding), and which guides the light emitted from the wavelength conversion member to the outside; and wherein the wavelength conversion member is produced by laminating a plurality of layers that wavelength-convert different wavelengths of light.