| 摘要 |
Transparent substrate ( 6 ) comprising an antireflection coating on at least one of its faces, especially at normal incidence, made from a thin-film multilayer (A), characterized in that the multilayer comprises, in succession: a first layer ( 1 ), having a refractive index n1 of between 1.8 and 2.3 and a geometrical thickness e1 of between 5 and 50 nm; a second layer ( 2 ), having a refractive index n2 of between 1.35 and 1.65 and a geometrical thickness e2 of between 5 and 50 nm; a third layer ( 3 ), having a refractive index n3 of between 1.8 and 2.3 and a geometrical thickness e3 of between 40 and 150 nm; and a fourth layer ( 4 ), having a refractive index n4 of between 1.35 and 1.65 and a geometrical thickness e4 of between 40 and 150 nm.
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