A lighting module, able to form a light beam along an optical axis, notably for a motor vehicle, having a body made of transparent material. The lighting module includes a first light rays input surface and a first reflection surfaceable to reflect to one or more focuses the light rays coming from the first input surface. A dioptric reflection folder surface essentially is extended along the optical axis and forms a cut-off edge at the level of the focus or focuses. Also included is a second light rays input surface, opposite to the first input surface with respect to the optical axis and a second reflection surface able to reflect the light rays coming from the second input surface towards the cut-off edge.