Lighting module for a motor vehicle and a light comprising such a module

A lighting module for a motor vehicle light, giving along an optical axis a light beam with horizontal cutoff, comprising:

• a concave reflector;
• at least one light source disposed in the concavity of the reflector in order to illuminate at least upwards;
• and
• a lens having a light entry face and a light exit face which are not parallel, the lens being situated at a front of the reflector and the light source, the light entry face facing the reflector and the light source,
• the reflector being associated with a flat plate comprising a top face that is reflective in order to bend the beam coming from the reflector, and a front end edge forming a cutoff in the light beam,
• wherein the reflector is determined so as to transform a spherical wave surface coming from the at least one light source into a wave surface boiling down to an arc of a circle situated in a plane of the flat plate,
• wherein the light entry face and the light exit face are each of revolution about an axis substantially orthogonal to the plane of the plate and orthogonal to the optical axis and passing through a centre of the arc of the circle,
• wherein the flat plate is formed by part of a disc having an arc of a circle as a front edge, and
• wherein a divergent beam of light rays issuing from a point on the arc of the circle, the point lying in a plane containing the axis of revolution, becomes a beam parallel to the projection of the optical axis on said plane upon passing through the light exit face.