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. 20, 2009
Filed:
Aug. 29, 2003
Thomas F. Soules, Livermore, CA (US);
Stanton Weaver, Jr., Northville, NY (US);
Chen-lun Hsing Chen, Sanchong, TW;
Mathew Sommers, Sagamore Hills, OH (US);
Boris Kolodin, Beachwood, OH (US);
Anan Achyut Setlur, Niskayuna, NY (US);
Thomas Elliot Stecher, Scotia, NY (US);
Thomas F. Soules, Livermore, CA (US);
Stanton Weaver, Jr., Northville, NY (US);
Chen-Lun Hsing Chen, Sanchong, TW;
Mathew Sommers, Sagamore Hills, OH (US);
Boris Kolodin, Beachwood, OH (US);
Anan Achyut Setlur, Niskayuna, NY (US);
Thomas Elliot Stecher, Scotia, NY (US);
Lumination LLC, Valley View, OH (US);
Abstract
An LED device including an LED chip and a lens positioned apart from the chip and coated with a uniform thickness layer of fluorescent phosphor for converting at least some of the radiation emitted by the chip into visible light. Positioning the phosphor layer away from the LED improves the efficiency of the device and produces more consistent color rendition. The surface area of the lens is preferably at least ten times the surface area of the LED chip. For increased efficiency, the reflector and submount can also be coated with phosphor to further reduce internal absorption.