Patent ID: 8749371
Filing Date: 2014-06-10
Classification: B60Q,B60R,G03H

Abstract:
1. A signaling device arranged on a reflective element forming a mirror of a rear-view device of a motor vehicle, the rear-view device allowing a main user to observe, by reflection, a zone rearward of the rear-view device, said signaling device comprising: an illumination unit; an optical device configured to direct a light beam produced by the illumination unit toward the zone in order to display at least a first illuminated signaling symbol in the zone, said first illuminated signal configured to be seen exclusively by observers other than the main user; and the illumination unit is arranged relative to the symbol generation unit so that the light beam enters the symbol generation unit through an outer peripheral edge of the symbol generation unit and is then diffracted towards the zone by the diffraction grating to form the first illuminated symbol, wherein the symbol generation unit includes a first diffraction grating and a second diffraction grating corresponding respectively to a first illuminated symbol and a second illuminated symbol, and the signaling device includes a first illumination unit and a second illumination unit that respectively produce a first light beam and a second light beam entering the symbol generation unit respectively in a first direction and second direction characterized as distinct and non-parallel to the first direction, the first and the second light beams co-operating respectively with the first and the second diffraction gratings to produce the first and the second illuminated symbols respectively.