Patent ID: 7121703

Claim:
A multifunction adaptive projector system for motor vehicles comprising an ellipsoidal reflector having a focal point and an optical axis; a light source; a shield; and a mechanism for variation of the position of said shield in relation to said reflector between a position for low beam light, a position for motorway light and a position for high beam light, an aspherical lens, in said position for low beam light said shield being in proximity of said focal point in said position for motorway light said shield being shifted by a first distance below said focal point when z 1 =b 1 ·α+b 3 ·α 3 +b 5 ·α 5 +b 7 ·α 7 + . . . , for α≈(0 to 3), where b 1,3,5,7, . . . are constants characterizing said aspherical lens; and in a position for high beam light said shield being shifted by a second distance below said focal point of said reflector, said second distance being greater than said first distance.