| abstract |
The invention relates to a device for displaying a real image on glazing forming part of a passenger compartment or a facade. According to the invention, the face of the glazing unit that is exposed to an incident monochromatic laser beam emitted by a source scanning a portion of the glazing comprises an antireflection coating and this stack consists of a stack of two films, namely, from the glass substrate, a first film made of a material based on zinc oxide, tin oxide, silicon nitride, a tin-zinc oxide or a silicon-zirconium oxide, and a second film made of a material based on silicon oxide, in which the respective geometric thicknesses Ep 1 and Ep 2 of said films are substantially equal to: for the first film: Ep 1 = 28 + 0.07(θ) ~ 0.007 (θ) 2 (1); and for the second film: Ep 2 = 83 - 0.1(θ) + 0.01 (θ) 2 (2), where θ is the average angle of orientation of the incident monochromatic laser beam relative to the normal to said glazing in the scanned portion of glazing. |