Headlights for vehicles

Abstract

The invention relates to a headlight for vehicles with at least one light source for emitting light (3), with an optical unit comprising a projection lens (1) for deflecting the light (3) so that a predetermined light distribution with a light / dark boundary is generated in the area in front of the vehicle, wherein the projection lens (1) has a Fresnel structure (5) with a plurality of annular effective edges (N1, N2) that deflect the light (3) for light distribution and interference edges (S) that do not deflect the light (3) for light distribution, wherein the effective edges (N1, N2) have an angle of attack (β1, β2) of a predetermined size to a plane (E) that is perpendicular to an optical axis (6) of the projection lens (1), wherein the angles of attack (β1, β2) of the effective edges (N1, N2) arranged at a distance from each other in the radial direction (R) are periodically or aperiodically greater and less than the basic angle of attack (α) are formed,wherein the number of first effective flanks (N1) arranged in the radial direction (R) extends with a first angle of attack (β1) which is greater than the basic angle of attack (α) by a first difference angle (Δφ1), and wherein the number of second effective flanks (N2) extends with a second angle of attack (β2) which is smaller than the basic angle of attack (α) by a second difference angle (Δφ2), are provided,