The energy saver high volt lamps were newly developed basis for this is an optimized spiral design as well as the xenon technology osram sets on the proven irc technology based on the principle of the heat recovery with the low voltage lamps by a special coating on the lamp bulb infrared coating the warmth radiated from the spiral is again led back to this joint and thus remains in the lamp thus less energy be supplied from outside in order to bring the spiral on operating temperature