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high power led lighting systems bring with them a lot of promise and numerous challenges. the advantages of led lamps are compact size, long life, easy maintenance, rugged construction, ability to withstand cold temperature, reduced ir radiation and increased performance.

thermal management, cost competitiveness and quality are the challenges faced in widespread usage of such lamps. thermal management is a notable roadblock to the implementation of such systems. there is 70-80% of the electrical power in a high brightness led is converted to heat which has to be efficiently dissipated.

poor thermal design leads to high operating temperatures resulting in reduced brightness, shift in wavelength (color) and reduced life. table 1 shows the potential advantages and the challenges of a led lighting system. 

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