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. 30, 2014
Filed:
May. 10, 2011
Ronan P. Letoquin, Fremont, CA (US);
Tao Tong, Oxnard, CA (US);
Robert C. Glass, Chapel Hill, NC (US);
Ronan P. LeToquin, Fremont, CA (US);
Tao Tong, Oxnard, CA (US);
Robert C. Glass, Chapel Hill, NC (US);
Cree, Inc., Durham, NC (US);
Abstract
Light emitting devices include a light emitting diode ('LED') and a recipient luminophoric medium that is configured to down-convert at least some of the light emitted by the LED. In some embodiments, the recipient luminophoric medium includes a first broad-spectrum luminescent material and a narrow-spectrum luminescent material. The broad-spectrum luminescent material may down-convert radiation emitted by the LED to radiation having a peak wavelength in the red color range. The narrow-spectrum luminescent material may also down-convert radiation emitted by the LED into the cyan, green or red color range.