Importance

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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 Ep₁ and Ep₂ of the layers are substantially equal to:

description='In-line Formulae' end='lead'Ep₁=26+0.07(θ)−0.007(θ)²  (1)description='In-line Formulae' end='tail'

description='In-line Formulae' end='lead'Ep₂=83−0.1(θ)+0.01(θ)²  (2),description='In-line Formulae' end='tail'

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.

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First Claim