Philips Lumileds reveals that test data for its Luxeon Rebel LEDs shows performance that exceeds Energy Star® guidelines in terms of the ISEMA's LM-80 lumen maintenance benchmark for 6000 hours.

The Energy Star guideline for lumen maintenance requires that after actually running for 6,000 hours, an LED which is running at a temperature that is equivalent to what it would be in a luminaire, must maintains 91.8% of its brightness, or 94.1% of its brightness for outdoor commercial or residential settings. However, after an actual test of 6,000 hours for Luxeon Rebel LEDs running at 350 mA at 55 degrees Celsius, the LEDs maintained 99% of their lumen output.

The results reinforce the superior lumen maintenance performance that has been a hallmark of Luxeon LEDs since they were introduced in 2000, They reflect the ability of the materials used to build Luxeon LEDs — including those used in the Epitaxial process, the phosphors, and the lens and packaging materials — to withstand the rigors of use and the elements to which they might be exposed under a variety of conditions without degrading the light output too rapidly.