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When designing new rear lamps the hardest effort is to create something that satisfies the sake of novelty of the car maker. Main tasks of rear lamps are as follows: they must fulfil photometrical requirements, be as cheaper as possible, fit into the vehicle body and appear “interesting” under the stylistic point of view. This is the case of “second reflection rear lamps”: the light of the lamp is collected by a primary reflector that deviates it on a secondary segmented reflector, the conjunction of the first and second reflector gives the needed angular deviation. These devices offer the novelty of a hidden source and of an innovative outer aspect when compared to the “single reflection rear lamps” due to the fact that some sectors appear brilliant and some dark. In this paper different mathematical concepts of the double reflection reflectors for rear lighting are explained as well as the different approaches used to calculate them and the SW tools used.

A major breakthrough in improving visibility, safety and comfort under all driving conditions is given by a headlamp with adjustable light intensity and beam pattern according to the vehicle speed, steering wheel angles and different driving conditions. The configuration of this adaptive or intelligent headlamp will be achieved in two phases, by implementation of simple functions, i.e. motorway beam pattern, followed by a combination of them in a second phase. For the new adaptive headlamp one should make use of powerful light sources like the Gas Discharge Bulb and of sensors for road surface status, speed and steering wheel angle. The optical design of the adaptive headlamp is more complex than for conventional headlamps and must take into account new requirements like the continuous transition between the low and high beam positions.