VS - Lighting Systems - Lighting - 998542

13.2. Complex-surface type Complex surface technologies were a major step in projector efficiency. They allow the use of all of the light produced by the bulb to create the low beam. The first generation became available in the 90’s but still used patterned glass on the outer lens. The second generation of complex surface technology allowed using clear plastic lenses. Since then, the cut-off, horizontal spread and homogeneity of the light beam are entirely performed by reflectors and their shapes.

Complex-surface reflector

Complex surface reflectors are a very common design on headlamps. They consist of a multitude of small reflecting surfaces that produce the appropriate illumination pattern on the road. As a general rule any type of light source can be used, from Halogen to Xenon and increasingly more common, LED. Complex surface reflectors are designed using intricate optic simulation. They offer better design flexibility (height reduction) and a much higher efficiency when compared to parabolic type light units.

Reflector (multiple mirrors)

Light bulb

13.3. Complex-surface and Xenon lamps

Low beams based on Xenon reflector-type lamps do exist, such designs must use special bulbs (R types).

In this particular case the cut-off pattern is achieved by combining complex surface reflections and an opaque coating shield that is printed on the outer glass of the lamps.

Complex surfaces are used for any beam and any light source.

Headlamp for Peugeot - 207 with H7+H1 lamps and complex surface technology

Headlamp for Renault - Laguna II with D2R+H1 lamps and complex surface technology

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