Multi-segment design method for a high-efficiency integrated transmissive laser headlamp system.

Abstract

We propose a multi-segment design method for optical mesh mapping to simplify the asymmetric illumination distribution. The angular topology division makes it possible to create a highly efficient integrated automobile headlamp system based on the transmissive blue laser drive. The low-beam optical system consists of a focused freeform reflector and the lower part of a multi-segment double freeform surface lens without the use of a baffle, while the upper part of the multi-segment lens and a reflector cup are designed to redistribute light and improve the efficiency of the high beam. The simulation and experimental results show that the integrated automobile headlamp system can fully comply with the requirements of the Economic Commission for Europe vehicle regulation R112. The low- and high-beam light efficiency is up to 80% and 78%, respectively, indicating that the proposed design is an effective solution for a high-efficiency, compact automobile headlamp system.