Patent ID: 7784985
Filing Date: 2010-08-31
Classification: F21S,F21V,F21W

Abstract:
1. A dual function headlamp for a motor vehicle fulfilling a first function as a beam with cut-off, in particular a dipped beam, and a second function as a second type beam, in particular a full beam, comprising: an elliptical reflector with an interior focal point and an exterior focal point on an optical axis and a recess or cavity located in the lower part thereof; a light source placed in the vicinity of said interior focal point; an optics placed in front of said elliptical reflector and having a focal point merged with, or next to, said exterior focal point of said elliptical reflector; and a retractable shade which occupies an active position for said beam with cut-off, and a withdrawn position for said second-type beam, said retractable shade in active position presenting a cut-off edge situated in the vicinity of said focal point of said optics; wherein said retractable shade comprises an integral reflective surface that supplements the reflective surface of the reflector when the shade is turned forward in a withdrawn position and hidden within the recess or cavity of the lower part of said elliptical reflector, wherein the reflective surface of the shade reflects light toward said optical axis to contribute to said second-type beam.