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:
Oct. 04, 2011
Filed:
May. 06, 2010
Hideaki Kaneda, Ibaraki, JP;
Naoto Kijima, Kanagawa, JP;
Eiji Hattori, Tokyo, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
To enhance emission efficiency and color rendering, a light emitting devicecomprises: at least one light source; at least one first emitting sectionhaving at least one sort of luminescent material that can emit light including a wavelength component that is longer than the light emitted from light sourcewhen excited by the light emitted from light source; at least one second emitting sectionhaving at least one sort of luminescent material that can emit light including a wavelength component that is longer than the light emitted from first emitting sectionwhen excited by the light emitted from light sourceand first emitting section; wherein light emitting devicecomprises at least one light shielding unitthat protects at least a part of the light emitted from first emitting sectionfrom entering second emitting section