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Solid-state lighting (SSL) products can have a predicted life of 70% lumen output (L70) from 26,000 to 40,000 hours using the LM-80-08 testing standards. Chromaticity shift, correlated color temperature (CCT) and lumen maintenance (LM) will dramatically reduce the nominal life of SSL luminaires. In this work, an off-the-shelf luminaire from Philips (AmbientLED) has been aged in a standard wet hot...
An investigation of a solid-state lighting (SSL) luminaire with the focus on the electronic driver which has been exposed to a standard wet hot temperature operating life (WHTOL) of 85% RH and 85°C in order to assess reliability of prolonged exposer to a harsh environment has been conducted. SSL luminaires are beginning introduced as headlamps in some of today's luxury automobiles and may also be...
Energy has been identified as one of the most important problems during the last few years. While energy generation and new energy resources are critical, energy efficiency in production, transportation and utilization are as important as well. One of those energy efficient technologies may reduce consumed energy in buildings from 20 percent to less than 5 percent. A novel lighting technology has...
The LED lighting market is growing annually, however high prices remain a barrier, especially in the incandescent replacement market [1]. Many LED bulbs, such as the A19 (the “classic” light bulb shape), MR16 (Multifaceted Reflector, 16 eights of an inch in diameter), and PAR30 (Parabolic Aluminized Reflector lamp, 30 eights of an inch in diameter) could benefit from the use of plastic materials to...
Thermal energy of many electronic components is currently managed using a heat sink cast of a conductive metal alloy. This method requires significant secondary assembly of many sub-components such as fasteners, thermal interface materials and potting compounds.
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