What’s the difference between an LED lamp and an LED luminaire?
An LED lamp is a complete replacement light source for conventional light bulbs, halogen lamps and compact fluorescent lights for standard sockets, such as E27, E14 and GU10. The light sources have the same shape and appearance as the lamps they replace and have built-in drivers.
Lifetimes vary between manufacturers and lamp types, but are normally 15,000 to 35,000 hours. This is specified as an average lifetime and means that up to 50% of the light sources will have failed (B50) by this time and that the remaining light sources will continue to function with at least 70% of their original brightness (L70). The calculation assumes an ambient temperature of 25°C.
An LED luminaire is a complete luminaire (unit) that can be connected to the mains supply via an integrated or separate transformer (converter, driver, power supply). In addition to the housing, it contains an LED module and a reflector and/or lens, as well as a heat sink to transfer heat away from the diodes. The driver usually determines whether the brightness of the luminaire can be adjusted (dimmed).
The lifetime varies between manufacturers and luminaire types. It’s most often specified as a usable lifetime, stating the number of hours with at least 70% of the original brightness (L70) and the number of hours after which only 10% of the luminaires have failed completely (B10).