LED Modules for Matrix and Pixel Light Solutions - On the Way to New Features in Headlight Systems

Glare-free high beams are a consistent enhancement of adaptive headlight systems for vehicles with advanced driver assist systems. A prerequisite for these are camera-based systems with the ability to recognize and classify objects such as vehicles in front or oncoming vehicles when driving at night. These objects can then be dynamically masked out of the high beam of the specially designed headlights. Since we are talking about moving objects, it is essential for the high beam to be continuously and dynamically adapted.

This paper describes a modular LED matrix system for dynamically adjusting a glare-free and continuously active high beam. The main focus was on the modularity of the system and the optimization of the thermal properties of an LED matrix in order to ensure that operation was reliable under the harsh environmental conditions inside a headlight. Specific control electronics and different interconnection methods were examined.

The results were worked out within the scope of a development project funded by the German Ministry of Education and Research (BMBF), which is part of the European SEEL (Solutions for Energy Efficient Lighting) research project within the joint CATRENE project (CA502).