Light assembly for the lighting and/or the signaling of a motor vehicle

A light assembly for the lighting and/or the signaling of a motor vehicle, including at least one light module housing means for emitting light rays in the direction of the output of said module, and a mask, part of which extends below focusing means, wherein said part of said mask which extends under said focusing means has at least a first surface that are seen by any person passing close to the vehicle and at least a second surface opposite said first surface, wherein the mask is made from a dark diffusing material and a reflective material coating is deposited on part of the second surface while leaving a portion of this second surface free of reflective coating, and wherein additional light-emitting means are placed opposite said second surface, such that the light rays emitted by said additional light-emitting means pass through the mask via said portion free of reflective coating.