Item Having Improved Thermomechanical Properties, Comprising an Organic-Inorganic Layer
AssigneeEssilor International
InventorsSébastien CHIAROTTO, Karin SCHERER
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Abstract
The invention relates to an item comprising a substrate having at least one main surface coated with a multilayer interferential coating comprising at least one layer with a refractive index higher than 1.65 and at least one layer with a refractive index lower than, or equal to, 1.65, at least one of the layers of the interferential coating being an organic-inorganic layer that has been deposited in a vacuum environment and has a thickness of at least 30 nm, said interferential coating having a thickness of at least 450 nm and/or at least 8 layers.
Claims20
-15. (canceled)
An article comprising a substrate having at least one main surface coated with a multilayer interference coating comprising at least one layer having a refractive index higher than 1.65 and at least one layer having a refractive index lower than or equal to 1.65, at least one of the layers of the interference coating being a layer of organic-inorganic nature that was deposited under vacuum and that has a thickness larger than or equal to 30 nm, said interference coating having a thickness larger than or equal to 450 nm and/or a number of layers higher than or equal to 8.
Dependencies are inferred from the claim text.