Light module for a motor vehicle headlamp

The module has a diaphragm arrangement implementing a variable effective upper edge, which is introduced into a beam path of an emitted light. The diaphragm arrangement implements an effective upper edge for generating a lower beam light distribution (10) within a horizontal light-dark boundary (13). An illuminated region (14) is formed at a horizontal position above the boundary, and is delimited at right-and left hand sides by the boundary. The illuminated region includes an extension in horizontal and vertical directions on a measuring screen arranged at a distance in front of a headlamp.