| abstract |
A display device comprising a radiation source and a glazing unit is disclosed. The glazing unit comprises a glazing function substrate and a coating that prevents reflection of incident monochromatic laser radiation emitted by the radiation source, which scans a portion of the gazing unit. The coating comprises a stack of two layers, namely, a first layer made of a material based on zinc oxide, tin oxide, silicon nitride, zinc tin oxide or 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 the layers are substantially equal to:n n Ep 1 =26+0.07(θ)−0.007(θ) 2 (1)n n Ep 2 =83−0.1(θ)+0.01(θ) 2 (2),n in which θ is the mean angle of orientation of incident monochromatic laser radiation to the normal to the glazing unit in the scanned portion thereof. |