A light-emitting diode motorcycle low-beam headlamp based on a freeform reflector

Abstract

The illumination quality of a motorcycle lighting system is essential for safety and driving comfort. In this paper, we propose a light-emitting diode (LED) motorcycle low-beam headlamp based on a freeform reflector. The reflector is generated by a freeform optics design method. Then, the optical system is simulated by the Monte Carlo method using commercial optical tracing software. The low-beam headlamp is then fabricated and assembled into a physical object. Both the simulation and measurement results show that the headlamp fully complies with United Nations Economic Commission for Europe (ECE) vehicle regulations.

A combined lens design for an LED low-beam motorcycle headlight

“…Therefore, we carried out some optical designs. 7,9,10,12,13 First, the optical axis of the entire optical system is set as the z -axis, so the plane XOY is the target lighting plane. Then, we start to mesh the lighting area, as shown in Figure 8.…”

“…With the development of manufacturing technology, freeform optics is widely used in imaging 1–3 and in non-imaging optics systems. 4–10 Compared with the reflection cup design method, the projection system parts are small and compact. The light distribution has a clear cut-off line and a uniform light distribution, so it is increasingly used in LED motorcycle lighting.…”

A light-emitting diode headlamp for motorcycles based on freeform micro-lenses

“…We have reported a LED low-beam headlamp design based on a freeform reflector. 13 The experimental results showed that the illuminance distribution could satisfy the ECE Regulation R113 revision 2. In this paper, we provide a design for both low-beam and high-beam headlamps for motorcycles based on freeform micro-lenses.…”