Patents by Inventor Anan Achyut Setlur

Anan Achyut Setlur has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Coated LED with improved efficiency
    Patent number: 7479662
    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.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: January 20, 2009
    Assignee: Lumination LLC
    Inventors: Thomas F. Soules, Stanton Weaver, Jr., Chen-Lun Hsing Chen, Mathew Sommers, Boris Kolodin, Anan Achyut Setlur, Thomas Elliot Stecher