Patent ID: 7213954
Filing Date: 2007-05-08
Classification: F21S

Abstract:
1. A multifunction adaptive projector system for motor vehicles comprising: an ellipsoidal reflector having a focal point and an optical axis; a light source; first and second shields, said shields being moveable between a position for low beam light, a position for motorway light, a position for wet road light and a position for high beam light, said shields operable to shield said light source and create a beam cutoff line; an aspherical lens; and a mechanism for varying the positions of said first and second shields in relation to said reflector between said position for low beam light, said position for motorway light, said position for wet road light and said position for high beam light, wherein where b 1,3,5,7, . . . are constants characterizing said aspherical lens and where α is the angle between said beam cutoff line created by said first shield and a horizontal plane; where b 1,3,5,7, . . . , are constants characterizing said aspherical lens and where β is the angle between said beam cutoff line created by said second shield and a horizontal plane, said fourth distance being less than said third distance.