LED projector headlamps using single or multi-faceted lenses

摘要

The present invention relates generally to motor vehicle headlamps, and more particularly relates to headlamps of the projector-type which employ a condenser lens. A condenser lens and a headlamp assembly employing the condenser lens improves control over the beam spread characteristics, while at the same time reduces the package size of the headlamp assembly. The condenser lens is provided for a projector-type headlamp assembly having a light source 22 emitting light 24 which is projected longitudinally downstream in front of a motor vehicle. The condenser lens 30 generally includes a main body of light transmitting material. The main body defines a first surface 34 receiving light from the light source and a second surface 36 emitting the light. The second surface has at least one facet (38, figure 1) structured to spread the light and provide a predetermined beam pattern. Suitable for Light Emitting Diode (LED) source headlights. Reflector 26 is preferably an elliptical reflector. Reflectors second focal point 40 generally coincides with a focal point of the condenser lens 30. Reflective shield 28 is preferably tilted slightly towards the condenser lens 30.