Essilor International

Benoit Emprin

Nicolas Maitre

Sébastien Chiarotto

William Trottier-Lapointe

Frédéric Guillain

The invention relates to an optical article comprising a substrate having at least one main face successively coated with a layer comprising chromium, silicon and oxygen, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer having a refractive index higher than 1.55 and at least one low refractive index layer having a refractive index of 1.55 or less, wherein the ratio (I) is higher than or equal to 1.5, and the optical article has a Bayer value determined in accordance with the ASTM F735-81 standard higher than or equal to 7.

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Paris, France

Benoit Emprin