To fully evaluate an LED product one must understand the individual components as well as overall system efficiency, from the power input to the light output. That is the overall efficacy of the luminaire. One must also understand the difference between catastrophic failure, as experienced with conventional light sources, and the slow depreciation of light output over time, as it applies to LED light sources. The US Department of Energy concluded in its Solid-State Lighting Commercial Product Testing Program that: “Until the field of SSL (solid state lighting) technologies and supporting knowledge matures, any claims regarding performance of SSL luminaires should be based on overall luminaire efficacy (i.e., from testing of the entire luminaire, including LEDs, drivers, heat sinks, optical lenses and housing), to avoid misleading buyers and causing long-term damage to the SSL market.”
Most LED lighting companies have designed product that has poor longer term efficacy. Initially, the product may operate relatively efficiently, but because the designs have not correctly addressed the long term impact of heat in depreciating the LED light output and LED life, such designs clearly run the risk of adversely impacting the migration from conventional lighting product to LED general illumination product.
ALLED believes its patented designs and innovations have correctly addressed efficacy to allow its product to outlast its competitors with a generally maintenance free life of up to 150,000 hours or more.