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. 09, 2018
Filed:
Jul. 30, 2012
Charles Draper, Apex, NC (US);
Kurt Wilcox, Libertyville, IL (US);
Jason Taylor, Cary, NC (US);
Paul Kenneth Pickard, Morrisville, NC (US);
Gerald H. Negley, Chapel Hill, NC (US);
Mark Edmond, Raleigh, NC (US);
Charles Draper, Apex, NC (US);
Kurt Wilcox, Libertyville, IL (US);
Jason Taylor, Cary, NC (US);
Paul Kenneth Pickard, Morrisville, NC (US);
Gerald H. Negley, Chapel Hill, NC (US);
Mark Edmond, Raleigh, NC (US);
Cree, Inc., Durham, NC (US);
Abstract
A high-efficiency LED lamp is disclosed. Embodiments of the invention provide a high-efficiency, high output solid-state lamp. The lamp includes an LED assembly, an optical element disposed to receive light from the LED assembly, and an optical overlay. The optical element includes a primary exit surface, wherein the primary exit surface is at least about 1.5 inches from the LED assembly. In example embodiments, the optical element is roughly cylindrical in shape, but can take other shapes and be made from various materials. An LED lamp according to some embodiments of the invention has an efficiency of at least about 160 lumens per watt. In some embodiments, the lamp has a light output of at least 1200 lumens. In some embodiments, the LED lamp produces light with a color rendering index (CRI) of at least 90 and a warm white color.