Method and apparatus for using light emitting diodes
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a technology of light-emitting diodes and light-emitting tubes, applied in the field of methods and apparatus, can solve the problems of affecting the efficiency of light-emitting diodes, and affecting the ability to concentrate higher power levels into smaller packages, and achieves the effect of high light outpu
Inactive Publication Date: 2010-09-02
DAHM JONATHAN S
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Problems solved by technology
Heat can damage sensitive electronic components, degrading reliability and hampering the ability to concentrate higher power levels into smaller packages.
Many applications would benefit from the ability to closely package LEDs into compact configurations, but the heat levels generated have always been a limiting factor.
As LEDs become more sophisticated, eliminating internal heat build-up has also become increasingly difficult.
Devices are becoming more powerful and creating solutions for removing the resulting heat generation often pose great challenges.
None of these U.S. patent documents disclose LED cooling in a manner to dissipate internal heat energy and packaging the same to achieve maximum light output.
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[0082]The present invention provides high power LEDs and heat pipe technology which allows for ultra-high power density packaging. The ultra-high thermal conductivity of the heat pipe allows for over-driving the LEDs by a factor of 4x, while maintaining junction temperatures well within rated limits. Other attributes include low thermal resistance submount, brightness-maintaining TIR reflector, low cross-sectional area heat sink, and individually addressable high-density chip array. These attributes facilitate the ability to achieve high power densities, even without integral heat pipes, which is especially useful for those applications that do not demand ultra-high thermal performance.
[0083]The manner of bonding of the LED device to the heat pipe component as in the present invention minimizes the physical space requirements while taking advantage of heat pipes' unique rapid heat dissipation capabilities. This allows much more closely spaced LEDs operating at higher power and brig...
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Abstract
The present invention provides a method and apparatus for using light emitting diodes for curing in various applications. The method includes a novel method for cooling the light emitting diodes and mounting the same on heat pipe in a manner which delivers ultra high power in UV, visible and IR regions. Furthermore, the unique LED packaging technology of the present invention that utilizes heat pipes performs far more efficiently in much more compact space. This allows much more closely spaced LEDs operating at higher power and brightness.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS:[0001]This application is a continuation of International Application No. PCT / US2003 / 023504 filed on Jul. 25, 2003, and which designated the U.S., which claims benefit of priority of U.S. Provisional Application Nos. 60 / 398,635, filed Jul. 25, 2002; 60 / 405,432, filed Aug. 23, 2002; 60 / 410,720, filed Sep. 13, 2002; 60 / 416,948, filed Oct. 8, 2002; 60 / 420,479, filed Oct. 21, 2002; 60 / 467,702, filed May 3, 2003 and 60 / 476,004, filed on Jun. 4, 2003.FIELD OF THE INVENTION[0002]This invention relates to the field of light emitting diode (“LED”) technology, particularly to improvement in the output of light therefrom for curing curable compositions and forming cured parts from curable composition after exposure thereto.BACKGROUND OF THE INVENTION[0003]Heat can damage sensitive electronic components, degrading reliability and hampering the ability to concentrate higher power levels into smaller packages. Many applications would benefit from the abilit...
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Patent Type & Authority Applications(United States)
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