| abstract |
Device for displaying a real image on a glazing unit of a passenger compartment or a facade, said glazing unit comprising on its face exposed to said source a coating that prevents reflection of incident monochromatic laser radiation emitted by a source scanning a portion of said glazing unit, said stack consisting of a stack of two layers, namely, starting from the glazing function substrate, a first layer made of a material based on zinc oxide, tin oxide, silicon nitride, a zinc tin oxide or a zirconium silicon oxide; and a second layer made of a material based on a silicon oxide, in which the respective geometric thicknesses Ep 1 and Ep 2 of said layers are substantially equal to:n for the first layer: nn Ep 1 =26+0.07 (θ)− 0.007 (θ) 2 (1)n for the second layer: nn Ep 2 =83−0.1 (θ)+ 0.01 (θ) 2 (2),n n in which θ is the mean angle of orientation of the incident monochromatic laser radiation to the normal to said glazing unit, in the scanned portion of the glazing unit. |