In this paper at first the added value for today of using LEDs in automotive exterior lighting will be discussed. Furthermore the status of industrialization and modular concepts for full LED headlamps will be presented. The rapid progress in the performance of white high-power LEDs will allow the production of LED headlamps where all lighting functions can be realized by means of semiconductor light sources in the near future. LED technology has various advantages in comparison with conventional headlamps. Such headlamps stand out in particular due to their light color, the possibility of implementing assisting and active lighting functions without mechanical components and their innovative styling. In the past few years, several full-LED headlamps have been constructed, some of which have been installed in test vehicles. All these previous prototype LED headlamps were constructed either from purely photometric, styling-specific or package space-specific points of view. In contrast, the prototype illustrated in this paper represents the professional implementation of the new light sources in a headlamp close to series standard. LED will offer a multitude of styling options in rear and front lighting, as well as a light color which differs considerably from that of the previous halogen and xenon headlamp systems. In the subsequent headlamp integration, from about 2012, freely-addressable LED-Arrays will make the realization of new types of lighting functions possible. The paper will be finished with a discussion of new styling options and functionalities, which can be realized principally better or only with LEDs. Furthermore a headlamp with low and high beam using LEDs will be presented in detail.
LED technology in headlamps - extend lighting functions and new styling possibilities
LED Technik bei Scheinwerfern - erweiterte Lichtfunktionalitäten und neue Gestaltungsmöglichkeiten
2007
9 Seiten, 6 Bilder, 8 Quellen
Conference paper
English
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