Invention Application
- Patent Title: Coated led with improved efficiency
- Patent Title (中): 涂层领先,效率提高
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Application No.: US10525697Application Date: 2003-08-29
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Publication No.: US20070120135A1Publication Date: 2007-05-31
- Inventor: Thomas Soules , Stanton Weaver , Chen-Lun Chen , Mathew Sommers , Boris Kolodin , Anan Setlur , Thomas Stecher
- Applicant: Thomas Soules , Stanton Weaver , Chen-Lun Chen , Mathew Sommers , Boris Kolodin , Anan Setlur , Thomas Stecher
- International Application: PCT/US03/27363 WO 20030829
- Main IPC: H01L33/00
- IPC: H01L33/00 ; H01L29/22 ; H01L29/227

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.
Public/Granted literature
- US07479662B2 Coated LED with improved efficiency Public/Granted day:2009-01-20
Information query
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