ARTICLE COATED WITH AN INTERFERENCE COATING HAVING PROPERTIES THAT ARE STABLE OVER TIME

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United States of America Patent

APP PUB NO 20190302313A1
SERIAL NO

16283343

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The invention relates to an article comprising a substrate having at least one main surface coated with a multilayer interference coating, said coating containing a layer A having a refractive index less than or equal to 1.55. The article is characterised in that: layer A forms either the outer interference coating layer or an intermediate layer that is in direct contact with the outer interference coating layer, said outer interference coating layer being a layer B having a refractive index less than or equal to 1.55; layer A is obtained by ion beam deposition of activated species from at least one compound C in gaseous form and containing in its structure at least one silicon atom, at least one carbon atom, at least one hydrogen atom and, optionally, at least one nitrogen atom and/or at least one oxygen atom, layer A being deposited in the presence of nitrogen and/or oxygen when compound A does not contain nitrogen and/or oxygen; and layer A is not formed from inorganic precursor compounds.

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Patent Owner(s)

Patent OwnerAddress
CORPORATION DE L'ECOLE POLYTECHNIQUE DE MONTREALMONTRÉAL QUÉBEC H3T 1J4
ESSILOR INTERNATIONAL (COMPAGNIE GENERAL D'OPTIQUE)147 RUE DE PARIS CHARENTON LE PONT F-94220

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chiarotto, Sebastien Charenton Le Pont, FR 3 3
Klemberg-Sapieha, Jolanta Montreal, CA 7 4
Martinu, Ludvik Montreal, CA 16 115
Scherer, Karin Charenton Le Pont, FR 19 53
Zabeida, Oleg Montreal, CA 8 7

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