Light module of a headlamp of a motor vehicle, the light module comprising - a matrix light source with a plurality of several individually controllable individual light sources arranged in a matrix, each of which emits more or less light depending on its control in order to generate a single light spot, - a lens system for imaging the light spots generated by the matrix light source on a roadway in front of the motor vehicle in order to generate a resulting light distribution of the light module , wherein the lens system has a plurality of individual lenses arranged one behind the other along a beam path, and - a diaphragm introduced into the beam path, which is designed to have a selective effect on edge regions of the imaged light distribution of the light module , characterised in that the diaphragm is introduced into the beam path between the matrix light source and a first individual lens of the lens system , a distance between the matrix light source and the diaphragm is in a range of 2 mm and 6 mm, the diaphragm comprises a light passage opening which has a central main opening and, to the side thereof, secondary openings which are smaller in area than the main opening , the secondary openings each merging into the main opening in a transition region of the light passage opening , the central main opening has a height (h30) which is selected such that a diameter (dA, dB) of at least one light beam , which was emitted by at least one central individual light source of the matrix light source , is not restricted by the diaphragm , and the lateral secondary openings each have a height (h32) which is designed such that a diameter (dC) of at least one light beam , which was emitted by at least one individual light source arranged in a lateral edge region (C) of the matrix light source , is cut off upwards and downwards by the diaphragm . - a matrix light source with a plurality of several individually controllable individual light sources arranged in a matrix, each of which emits more or less light depending on its control in order to generate a single light spot, - a lens system for imaging the light spots generated by the matrix light source on a roadway in front of the motor vehicle in order to generate a resulting light distribution of the light module , wherein the lens system has a plurality of individual lenses arranged one behind the other along a beam path, and - a diaphragm introduced into the beam path, which is designed to have a selective effect on edge regions of the imaged light distribution of the light module , the diaphragm is introduced into the beam path between the matrix light source and a first individual lens of the lens system , a distance between the matrix light source and the diaphragm is in a range of 2 mm and 6 mm, the diaphragm comprises a light passage opening which has a central main opening and, to the side thereof, secondary openings which are smaller in area than the main opening , the secondary openings each merging into the main opening in a transition region of the light passage opening , the central main opening has a height (h30) which is selected such that a diameter (dA, dB) of at least one light beam , which was emitted by at least one central individual light source of the matrix light source , is not restricted by the diaphragm , and the lateral secondary openings each have a height (h32) which is designed such that a diameter (dC) of at least one light beam , which was emitted by at least one individual light source arranged in a lateral edge region (C) of the matrix light source , is cut off upwards and downwards by the diaphragm . <EOS>