Ceravision has introduced a combined lamp and luminaire under the trade name "Alvara" for use in high bay and street lighting applications. It uses an optically clear quartz waveguide with an integral burner so all the light from the plasma passes through. The small source also lets the luminaire use more than 90% of the available light compared with 55% for typical HID fittings. Ceravision claims the highest Luminaire Efficacy Rating (LER) of any light fitting on the market, and to have created the first high-efficiency plasma (HEP) lamp. Ceravision uses a magnetron to generate the required RF power and claims a life of 20,000 hours.