| abstract |
The invention concerns a transparent substrate (6), comprising an antiglare coating, consisting of a stack (A) of thin layers of dielectric material with alternately high and low refractive indices. Said stack comprises a first layer (1), with high refractive index n1 ranging between 1.8 and 2.2 and a geometric thickness e1 ranging between 5 and 50 nm; a second layer (2), with low refractive index n2 ranging between 1.35 and 1.65 and geometric thickness e2 ranging between 5 and 50 nm; a third layer (3), with high refractive index n3 ranging between 1.8 and 2.2, and geometric thickness e3 ranging between 70 and 120 nm; a fourth layer (4), with low refractive index n4 ranging between 1.35 and 1.65 and thickness e4 of at least 80 nm. |