Essilor International

Luc Nouvelot

Francisco De Ayguavives

Karin Scherer

Michèle Thomas

Dominique Rychel

Johann Rotte

Daniel Vallet

Gérard Willemin

Frèdèric Arrouy

Olivier Beinat

The invention relates to an optical article provided with antireflection properties, comprising a substrate having at least one main surface coated with an antireflection coating comprising, starting from the substrate: a sub-layer comprising two adjacent layers formed from the same material, the sum of the thicknesses of the two adjacent layers being greater than or equal to 75 nm; and a multilayered antireflection stack comprising at least one high refractive index layer and at least one low refractive index layer, the deposition of the first of said two adjacent layers of the sub-layer having been carried out without ion assistance and the deposition of the second of said two adjacent layers of the sub-layer having been carried out under ion assistance. The invention also relates to a process for manufacturing such an optical article.

Optical article coated with an antireflection coating comprising a sub-layer partially formed under ion assistance and its manufacturing process

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Charenton le Pont, France

Luc Nouvelot