Abstract: An optical system for a motor vehicle, the optical system performing at least one main optical function and including in particular a diffusion screen, at least one light source of the LED type, each LED of the optical system producing a set of rays of light to be propagated in the diffusion screen wherein the screen is in the form of a curved sheet, with an upper lateral flange and a lower lateral flange which meet at a periphery which has in particular a rear face and a front edge and the principal function is performed essentially via an output face constituted by the front edge of the diffusion screen.

Abstract: A lighting module comprising at least one first lighting device and one second lighting device; the first lighting device comprises a support common to at least one first light emitter generating a first light strip and at least one second light emitter generating a second light strip.

Abstract: A lighting and/or signaling device and method comprising an opaque element that can move between at least two positions, one of the positions interposing the opaque element between the main light source and the optical focusing device, in which the opaque element is arranged so that when it is interposed between the main light source and the optical focusing device it prevents rays originating from outside the lighting and/or signaling device from being focused, especially in a line or spot, by the optical focusing device, in order to prevent degradation of the lighting and/or signaling device.