Police, fire service, ambulances – when they’re called to an emergency, they all need blue light. Up to now, this has usually taken the form of a halogen lamp which is circled by a reflector. In other words, the light beam rotates around the luminaire. But there is a great disadvantage to this. Valuable moments are lost before the warning is seen by other motorists. But LED technology has the answer. With the brightest blue light-emitting diode worldwide, Osram has made it possible to construct blue lights and other signal functions without mechanical parts. With this system, several LEDs can transmit the blue light in all directions without losing a single moment.
When developing the Oslon Signal, Osram’s engineers created a lamp that was twice as bright as its predecessor. What’s more, the color of the new LED is stable in the long term. Then there’s the fact that, measuring just 3 x 3 mm, a single diode takes up very little space so that additional blue lights can be installed in various positions on an emergency vehicle. The xenon strobe lights used hitherto are much more bulky, requiring an additional high-voltage power supply.
Light-emitting diodes (LEDs) outclass incandescent warning lights in a number of ways. For instance, they can flash at a much higher frequency. The filament of a classical light source responds much too slowly. If flashed at a speed of more than twice or thrice per second, it would never go out, nor would it ever reach its full brightness. The low power consumption of the semiconductor light is also a great boon when vehicles need to be parked for a long time at the scene of an emergency with their lights flashing.
The new models in the Oslon Signal series are not just available in blue. Osram can also supply them in other signal colors such as red, yellow and green. They are suitable for other applications, too, for instance in signaling systems, as warning lights and in the field of aviation. Indeed, they have been approved for civil aviation, so the flashing lights at the wing tips of planes may soon be produced by light-emitting diodes. Other applications include their use as signal lights in airport maneuvering areas.