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Xenon bulbs use an electroluminescent process to generate light in an electrical arc. This arc is ignited in a glass cavity that contains different elements that facilitate the start-up phase and guarantee the light composition. Today’s xenon bulbs contain a small amount of mercury, required during the ignition phase. After intensive research we are now able to produce bulbs containing no hazardous materials.
Owing to the new composition of the filling elements, the driving conditions and the optical properties of the bulb have changed. The driving voltage has fallen from 85 Volts to 42 Volts, almost doubling the driving current, and the nominal luminous flux has dropped slightly.
Both new Valeo headlamps in the new Audi A5 coupé and the Toyota Auris are using this new environmentally friendly technology without compromising the performance of the overall system. Valeo is the first supplier to market a Mercury-Free Bi-function Xenon System.
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