Essilor International

Corporation De L'ecole Polytechnique De Montreal

Bruce Faure

Ludvik Martinu

Karin Scherer

Oleg Zabeida

Bill Baloukas

Stephanie Pega

Sébastien Chiarotto

William Trottier-Lapointe

Julien Gagnon

Nicolas Desjardins-Lecavalier

Sasha Woodward

Richard Vernhes

Stéphanie Pega

An optical article includes a substrate with front and rear main faces, one main face coated with a columnar micro- or nano-structured coating. The substrate and optical article are transparent in at least a part of the visible region ranging from 380 to 780 nm, along at least one incidence angle. The columnar micro- or nano-structured coating includes an array of columns including each a core and an upper layer covering the core, the core and the upper layer being structurally and/or chemically different and have light absorbing properties with an extinction coefficient 'k' ≥10-2 in the spectrum 250-2500 nm and are able to cause a change in transmission or in reflection of incident light through the optical article as a function of the angle of incidence of light. Also disclosed is a method for manufacturing an optical article including a columnar micro- or nano-structured coating.

Optical article having directional micro- or nanostructured thin film coating, and its process

The invention concerns an item comprising a substrate having at least one main surface coated with a layer A in direct contact with a hydrophobic outer layer B, characterized in that said layer A has been obtained by depositing, under ion beam, activated species from at least one compound C, in gas form, containing, in the structure of same: at least one carbon atom, at least one hydrogen atom, at least one Si&#x2014;X group, in which X is a hydroxy group or a hydrolysable group chosen from the H, halogen, alkoxy, aryloxy and acyloxy groups, &#x2014;NRRin which Rand Rseparately designate a hydrogen atom, an alkyl group or an aryl group, and &#x2014;N(R)&#x2014;Si in which Rdesignates an alkyl group or an aryl group, said compound C being neither tetramethyldisiloxane nor tetraethoxysilane, nor vinylmethyldiethoxysilane, nor hexamethylcyclotrisilazane, said layer A not being formed from inorganic precursor compounds.

Item coated with a silicon/organic layer improving the performances of an outer coating

Growing community of inventors

Charenton-le-Pont, France

Bruce Faure