LENS, WORK LIGHT INCLUDING SUCH A LENS, AND VEHICLE

An input face of a lens includes an upper portion configured to divert the light rays so that they are substantially parallel to the horizontal midplane (P), and a lower portion configured to reduce the vertical opening angle (α) of the light beam, according to the vertical axis (Z). The output face of the lens includes a central vertical portion substantially planar and orthogonal to the optical axis. On either side of the central vertical portion, a lateral portion is configured to divert each light ray in the direction of the vertical midplane (P), according to an amplitude of deflection that is even larger as the point of incidence of the light ray on said lateral portion is close to the vertical midplane (P).