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:
Jun. 12, 2012
Filed:
Jun. 11, 2010
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 includes an excitation light source that emits excitation light, a wavelength conversion member, a light guide, and a light guide distal end member. The wavelength conversion member absorbs the excitation light emitted from the excitation light source, converts its wavelength, and releases light of a predetermined wavelength band. The 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) guides the excitation light emitted from the excitation light source to the wavelength conversion member. The light guide distal end member supports a distal end of the light guide on the wavelength conversion member side. The light guide distal end member is formed from a material that reflects the excitation light and/or the light that has undergone wavelength conversion.