Lighting class LEDs are now available that deliver the brightness, efficacy, lifetime, color
temperature, and white point stability required for general illumination. As a result, these LEDs
are being adopted into most general lighting applications including roadway, parking area and
indoor directional lighting. LED-based luminaires reduce Total-Cost-of-Ownership (TCO) in these
applications through maintenance avoidance and reduced energy costs.
MR16 lamps are one variety of Multifaceted Reflector (MR) lamps that have traditionally
employed a halogen filament capsule as the light source. They are used in many retail and
consumer lighting applications where their size, configurability, spot-lighting capability and
aesthetics provide utility and creativity. Their low efficiency, heat generation (an issue for
illuminating heat sensitive subjects and materials) and halogen capsule handling issues are
typically cited among the disadvantages of the technology. They typically operate from 12V AC
or 12V DC, though designs for 6V to 24V are also popular and as such require a step-down
transformer to allow use from offline supplies. This is usually effected with conventional
electromagnetic or electronic transformers.
With the advancement of HB (High Brightness) LED technologies, MR16 lamps can now be
realized with an alternate light source. This hybrid solution can yield a cost effective, long-life,
maintenance free, cooler operating unit which has not been previously possible.