In the region of the adjusting cams (15, 16) of the lens (14) a support part (25) respectively projects into the groove (18) of the reflector (10), and the foot (17) of the lens (14) is supported on the three support parts (25). Before solidification of the adhesive (19), the upper and/or one of the two lower support parts (25) are adjusted in the direction (24) of the axis (13) of the headlamp until the predetermined light distribution of the headlamp is achieved. As a result, the necessary adjustment of the lens (14) with respect to the reflector (10) is carried out with technically simple means and is executed reliably. <IMAGE>