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:
Nov. 08, 2016
Filed:
Sep. 19, 2013
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Toru Kinoshita, Tokyo, JP;
Tsutomu Nozoe, Tokyo, JP;
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Abstract
A composite wavelength conversion powder and a resin composition containing a composite wavelength conversion powder which have high utilization efficiency of light and high utilization efficiency of a constituent material, and are able to make highly efficient light emission and high reliability compatible are provided. The composite wavelength conversion powder is formed by dispersing phosphor particles having a refractive index of 1.6 or more in matrix particles containing fine magnesium fluoride particles or fine calcium fluoride particles. In addition, a light emitting device which is able to improve utilization efficiency of light due to the phosphor particles excited by primary irradiation light emitted by a light emitting element, is able to improve the optical output of light emission by increasing an the amount of secondary irradiation light generated from the phosphor particles, and is able to suppress limit the occurrence of color unevenness or a color variation device in light emitted to the outside of the device is provided. A light emitting device () includes a substrate (), a light emitting element () mounted on a front surface of the substrate (), and a light transmitting member () formed to cover the light emitting element (), and the light transmitting member () contains phosphor particles having an average particle diameter of 500 nm or less, and composite wavelength conversion particles () formed of inorganic particles having an average particle diameter of 500 nm or less which are transparent with respect to visible light.