Adaptive Front-Lighting System in LED Technology - Initial Steps and the Future 2007-01-0873
In the middle of 2006, the first car equipped with an intelligent AFS (Adaptive Front-lighting System) headlamp went into serial production and has, until now, generated a very positive reaction in the press all over the world. The different AFS beam patterns in this car are generated by a Xenon AFS projector module, which works in combination with a swiveling actuator system.
One of the big innovative steps in automotive front-lighting technology that is soon to be released is the introduction of the LED (Light Emitting Diode) as a new light source for headlamp applications.
The benchmark for this new light source technology is of course the well accepted performance level of today's HID headlamp systems.
On the one hand, it is very important to achieve the HID performance level in terms of luminous flux, peak intensities, distribution characteristics, homogeneity and other positive attributes. On the other hand, the flexible functionality of modern headlamp systems like dynamic bend lighting and the realization of the AFS beam pattern will be the target for the next steps in the development of an LED-based headlamp system.
In this paper we will describe the different technology and strategy aspects which enable us to achieve the aforementioned HID performance level and modern AFS functionality when using the LED as a light source.
Due to the special characteristics and behavior of the LED light source, there are big challenges which have to be solved, particularly in terms of:
flexible addition of singular beam pattern elements generating the AFS light functions, like town light, country light, adverse weather light and the motorway light.
realizing a system behavior similar to dynamic bend lighting simply through intelligent switching of different beam pattern elements and without using mechanically moving elements in the headlamp.
Citation: Schmidt, C., Kalze, F., and Eichhorn, K., "Adaptive Front-Lighting System in LED Technology - Initial Steps and the Future," SAE Technical Paper 2007-01-0873, 2007, https://doi.org/10.4271/2007-01-0873. Download Citation
Author(s):
Christian Schmidt, Franz Josef Kalze, Karsten Eichhorn
Affiliated:
HELLA KGaA Hueck & Co.
Pages: 13
Event:
SAE World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Automotive Lighting Technology and Human Factors in Driver Vision and Lighting-SP-2106, SAE 2007 Transactions Journal of Passenger Cars: Electronic and Electrical Systems-V116-7
Related Topics:
Light emitting diodes (LEDs)
Headlamps
SAE MOBILUS
Subscribers can view annotate, and download all of SAE's content.
Learn More »
