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LED lighting technology is advancing at fast pace, LED lighting products in the market show a wide range of performance characteristics. This work explains the need for trustworthy, fair product performance information to promote the market for LED lighting products. In this work more than 120 LED down lights were tested using industry-approved test procedures and summary of the results is presented...
As the operating temperature of a LED lighting product increases, quite a few performance parameters experience a short-term and recoverable shift. With increasing operating temperature of a LED lighting product, forward voltage reduces, luminous flux reduces, and the color characteristics change from the desired characteristics. Furthermore, maximum junction temperature of the LEDs in the lighting...
Recent advancement in solid state technology has made LED lighting energy-efficient and today it is one of the rapidly-developing lighting technologies. Design of LED lighting luminaires is still repeatedly governed by misinterpretations and inappropriate use of the related solid state lighting technology. Heat is generated as byproduct of the light generation process at the LED junction; this heat...
LED luminaires are extensively used in a variety of applications. The LEDs are driven by from fraction of an ampere to nearly one ampere. LED luminaires are required to operate at high temperatures, depending on the application. High-power LED luminaires generate too much heat. If the heat generated is not dissipated away from the LED device it will affect the useful operating life and color characteristics...
Incredible long-life makes LED lighting systems a good long-term investment The higher capital cost is justified as there is long-term energy and maintenance cost savings. Operational requirements and materials used in manufacturing a of LEDs make then-failures distinctive compared to other microelectronics devices. Significant effort has gone into understanding of the failure modes and mechanisms...
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