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:
Dec. 10, 2013
Filed:
Oct. 13, 2011
Bing Dai, Fremont, CA (US);
Xianglong Yuan, Fremont, CA (US);
Gang Wang, Milpitas, CA (US);
Charles Edwards, Pleasanton, CA (US);
James Caruso, Albuquerque, NM (US);
Bing Dai, Fremont, CA (US);
Xianglong Yuan, Fremont, CA (US);
Gang Wang, Milpitas, CA (US);
Charles Edwards, Pleasanton, CA (US);
James Caruso, Albuquerque, NM (US);
Intematix Corporation, Fremont, CA (US);
Abstract
A light emitting device comprises at least one solid-state light source (LED) operable to generate excitation light and a wavelength conversion component located remotely to the at least one source and operable to convert at least a portion of the excitation light to light of a different wavelength. The wavelength conversion component includes a light transmissive substrate having a wavelength conversion layer comprising particles of at least one photoluminescence material and a light diffusing layer comprising particles of a light diffractive material. This approach of using the light diffusing layer in combination with the wavelength conversion layer solves the problem of variations or non-uniformities in the color of emitted light with emission angle.