TY  - JOUR
PY  - 2021//
TI  - Design of a reflective LED automotive headlamp lighting system based on a free-form surface
JO  - Applied optics (2004)
A1  - Yang, Yashuai
A1  - Qiu, Dangshe
A1  - Zeng, Yi
A1  - Li, Ruolan
A1  - Duan, Wenju
A1  - Fan, Rundong
SP  - 8910
EP  - 8914
VL  - 60
IS  - 28
N2  - In this paper, a design scheme of an automobile low-beam light illumination system with a reflector free-form surface is presented. Per the energy grid mapping theory and edge ray theory, an oblique triangular energy mapping scheme was proposed, and the free-form reflector was obtained by geometric iterative calculation. The Monte Carlo ray tracing method was used to simulate the system. The simulation results met the regulatory requirements of ECE R112, and the light efficiency could reach 81%. The length, width, and height of the reflector were 55.61mm×22.02mm×23.70mm. The reflector achieves a special light type through precise light distribution, does not need other shielding objects, and has the advantage of small size.<p />  <p>Language: en</p>
LA  - en
SN  - 1559-128X
UR  - http://dx.doi.org/10.1364/AO.431320
ID  - ref1
ER  -