Luminous module (101; 201), in particular for an automotive vehicle, comprising: - a light source (104; 204) adapted to emit light rays; - a reflecting surface (102.2; 202.2) intended to be coated with a lacquer and configured to reflect the light rays so as to form a light beam with an upper cut-off, said reflecting surface comprising a first zone (102.2.4; 202.2.3) extending longitudinally along an optical axis of the luminous module and configured to form a light image with an upper cut-off and a second zone (102.2.3; 202.2.2) and a third zone (102.2.5; 202.2.4) extending longitudinally along the first zone (102.2.4; 202.2.3), on either side of said first zone respectively; characterized in that the reflecting surface (102.2; 202.2) has a transverse profile, that is to say perpendicular to the optical axis of the luminous module, forming a downward step from the first zone (102.2.4; 202.2.3) to each of the second (102.2.3; 202.2.2) and third (102.2.5; 202.2.4) zones, in that the upper cut-off of the light image with an upper cut-off formed by the first zone (102.2.4; 202.2.3) of the reflective surface (102.2; 202.2) is inclined by an angle β relative to a horizontal direction, said first zone having lateral edges forming an inclination at an angle γ relative to a vertical plane parallel to the optical axis, and where | β - γ | ≤ 10°, and in that the light source (104; 204) is of the semiconductor type with a flat illuminating surface, said illuminating surface having a front edge (104.1; 204.1) inclined by an angle α relative to a direction perpendicular to the optical axis and in the plane of said illuminating surface, the inclinations α and β being able to be identical, but not necessarily while remaining close, for example with a maximum difference of 5°. - a light source (104; 204) adapted to emit light rays; - a reflecting surface (102.2; 202.2) intended to be coated with a lacquer and configured to reflect the light rays so as to form a light beam with an upper cut-off, said reflecting surface comprising a first zone (102.2.4; 202.2.3) extending longitudinally along an optical axis of the luminous module and configured to form a light image with an upper cut-off and a second zone (102.2.3; 202.2.2) and a third zone (102.2.5; 202.2.4) extending longitudinally along the first zone (102.2.4; 202.2.3), on either side of said first zone respectively; the reflecting surface (102.2; 202.2) has a transverse profile, that is to say perpendicular to the optical axis of the luminous module, forming a downward step from the first zone (102.2.4; 202.2.3) to each of the second (102.2.3; 202.2.2) and third (102.2.5; 202.2.4) zones, in that the upper cut-off of the light image with an upper cut-off formed by the first zone (102.2.4; 202.2.3) of the reflective surface (102.2; 202.2) is inclined by an angle β relative to a horizontal direction, said first zone having lateral edges forming an inclination at an angle γ relative to a vertical plane parallel to the optical axis, and where | β - γ | ≤ 10°, and in that the light source (104; 204) is of the semiconductor type with a flat illuminating surface, said illuminating surface having a front edge (104.1; 204.1) inclined by an angle α relative to a direction perpendicular to the optical axis and in the plane of said illuminating surface, the inclinations α and β being able to be identical, but not necessarily while remaining close, for example with a maximum difference of 5°.