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Polyellipsoid
Headlamps
Benefits
 | The new polyellipsoid headlamps are more compact than conventional reflective
headlamps. |
| The sharp focusing of the light and the elliptical shape of the reflector
increase the range of vision and volume of light. This has effects at both short
range and long range. |
| They also ensure even bright illumination of the road on bends. |
Design
The design of the polyellipsoid headlamp is similar to that of a slide
projector. It consists of a reflector, H1 bulb, aperture ("slide") and a
converging lens.
An aperture inserted between the bulb and the lens produces a precisely defined
light/dark boundary. The complex geometry of the reflector means that the light
distribution is produced in the object plane and projected complete with the
light/dark boundary onto the road. Thus, a diffusing lens is no longer required.
After refitting the rear dust cap (in the engine compartment) the headlamp can
be switched from asymmetrical to symmetrical light via a lever. Therefore it is
not necessary to put an adhesive tape on the headlamp when changing from left to
right-hand drive traffic. (see Headlights)
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