Hybrid projector LED low beam headlamp

摘要

The optics system is a lamp assembly which produces the desired beam pattern by using a reflector, a lens, a retainer lens, and an LED as a light source. The lamp assembly has three main components (the reflector, the lens, and the retainer lens) that maintain proper alignment between the light source and the reflector, the lens, and the retainer lens. The optical system collects substantially 100% of the light from the light source while effectively shaping the beam pattern using both cylindrical and revolved reflector elements. The lens has a saddle-shape which is used with the surface of a revolution to eliminate any “dogbone” light pattern shape. The use of a reflective element forms the foreground of the beam pattern.

主权项

1. A headlamp assembly, comprising:
a housing; a light emitting device arranged in the housing and having a planar emitting surface from which light is emitted along an optical axis to form a beam pattern; a lens arranged in the housing to receive a first portion of the light emitted from the light emitting device and operates to direct the light in a direction substantially parallel to the optical axis, the lens having only one incident surface upon which the first portion of the light is incident thereon and the incident surface being planar and oriented at substantially forty-five degrees in relation to the optical axis; and a reflector arranged in the housing to receive a second portion of the light emitted from the light emitting device and reflect the second portion of the light in a direction substantially parallel to the optical axis.