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:
Jan. 31, 2012
Filed:
Jul. 27, 2005
Tomoya Tabuchi, Gamo-gun, JP;
Akira Miyake, Gamo-gun, JP;
Daisuke Sakumoto, Gamo-gun, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
A light emitting device includes a base on which a wiring conductor is formed from the top surface to the bottom surface or the side face; a light emitting chip mounted on the top surface of the base and electrically connected with the wiring conductor; a first light transmitting member which covers the light emitting chip; a second light transmitting member provided above the first light transmitting member to cover the first light transmitting member, the second light transmitting member being formed of a light transmitting material containing fluorescent materials for converting in wavelength the light emitted from the light emitting chip; and a third light transmitting member provided between the first and second light transmitting members, wherein the refractive index nof the first light transmitting member, the refractive index nof the second light transmitting member and the refractive index nof the third light transmitting member satisfy the relation: n<nand n<n, thereby achieving higher light extraction efficiency, higher optical intensity of radiation, and higher axial luminosity and brightness.