Car headlamps : halogen, xenon, L.E.D
Different Light sources for Headlamps
Valeo provides more than 1000 references of Halogen Headlamps for the aftermarket. Automotive Halogen bulbs are the most used light sources for headlamps, representing more than 80% of the car park. The Halogen technology was first developed by Cibié (Valeo-owned brand) in the 1950’s and continuously improving since then, with, for example, the development of more complex reflectors (elliptical modules) that allow the use of transparent lenses (as opposition to striped lenses) and new design possibilities.
Valeo has launched the first Xenon Headlamps in 1996. Xenon bulbs are part of the High-Intensity Discharge (HID) lamps that produces light thanks to an electric arc generated between two electrodes. Xenon headlamps offer an increased visibility by more than 30% compared to halogen headlamps at a longer range (110m vs. 80m). Xenon headlamps also offer a light closer to daylight illumination, i.e. a whiter or blue-ish light for lower power consumption (35W vs. 55W for H1 bulb) that allows significant CO2 emissions by 1.3g/km.
Light Emitting Diodes (L.E.D.s) provide a very efficient light for less power consumption than halogen and xenon bulbs with extended design possibilities thanks to their compact size. First used in rearlamps for their new design capabilities, L.E.D.s are now used in headlamps mostly on high-end car finishes. Besides offering the same optical performance level as Xenon headlamps, L.E.D.s have a lower power consumption and last entire car lifetime. Valeo has launched full-L.E.D. headlamps for the new Ford Mondeo, the Seat Leon and The Volkswagen Golf VII applications.