Patent ID: 7543963

Claim:
A module for projecting a light beam, comprising: a light source suitable for producing the light beam, a substantially flat support surface on which the source is arranged in such a way as to emit the light beam from only one side of the flat support surface, and a curved reflecting surface which extends on one side of the flat support surface and has its concavity facing towards the flat support surface, and which reflects the light beam originating from the source in a principal direction substantially parallel to the flat support surface of the source, the reflecting surface being divided into a plurality of reflecting areas suitable for receiving respective portions of the light beam, wherein the plurality of reflecting areas comprises at least one central reflecting area and at least one first lateral reflecting area, the central reflecting area being interposed between the light source and the first lateral reflecting area and having a substantially elliptical horizontal cross-section parallel to the flat support surface with one of its foci substantially coinciding with the light source, and a substantially parabolic vertical cross-section with an axis substantially parallel to the fiat support surface and with its focus substantially coinciding with the light source, and wherein the central reflecting area and the first lateral reflecting area are geometrically configured in such a way that the portion of the light beam reflected by the first lateral reflecting area is substantially collimated in a vertical direction and has a small horizontal spread α less than a first predetermined angular value α 1 , and that the portion of the light beam reflected by the central reflecting area has a wide horizontal spread α greater than a second predetermined angular value α 2 .