Essilor International

Corporation De L'ecole Polytechnique De Montreal

Pratt-whitney Canada Corp

Oleg Zabeida

Ludvik Martinu

Karin Scherer

Jolanta Klemberg-Sapieha

William Trottier-lapointe

Bill Baloukas

Nicolas Maitre

Sébastien Chiarotto

William Trottier-Lapointe

Thomas Schmitt

Joel Larose

Bruce Faure

Martin Caron

Jolanta Sapieha

Richard Vernhes

Etienne Bousser

Elvi Dalgaard

Amaury Kilicaslan

Julien Gagnon

Nicolas Desjardins-Lecavalier

Sasha Woodward

Artem Shelemin

An article including a substrate having at least one main surface coated with a layer A having a refractive index lower than or equal to 1.50, said layer A being obtained by deposition of activated species issued from at least one compound C in gaseous form, containing in its structure at least one Si-fluoroalkyl group, at least one carbon atom, at least one hydrogen atom and optionally at least one nitrogen atom and/or at least one oxygen atom, the deposition of said layer A being carried out by applying a bombardment with an ion beam to layer A while layer A is being formed, and said layer A being formed in the absence of inorganic precursor compounds. Application to the preparation of interferential coatings.

Article coated with a low refractive index layer based on fluorinated organosilicon compounds

An article has a cavity defined by an inner surface, the cavity having a size such that a largest sphere placeable in the cavity has a diameter of less than 7 cm and a smallest sphere placeable in the cavity has a diameter of 0.5 mm; and a hard coating on the inner surface, the hard coating having a hardness between 18 to 100 GPa, the hard coating distributed on the inner surface such that a ratio of a coating thickness at a first region of the hard coating to that at a second region of the hard coating ranges from 0.75 to 1.33.

Pulse-managed plasma method for coating on internal surfaces of workpieces

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 ophthalmic lens having an increased resistance to thermal and hygroscopic stresses, said ophthalmic lens comprising a substrate, at least one main face of which is coated with a siloxane-based anti-abrasion hardcoat, characterized in that said ophthalmic lens further comprises at least one protective layer of an organic-inorganic material directly in contact with said hardcoat, said protective layer of organic-inorganic material having a Young's modulus higher than 20 GPa, preferably of at least 25 GPa.

Ophthalmic lens having increased resistance to hot and humid environment

An optical article including a substrate with two main surfaces, at least one of which is covered by a polymer coating having an outer surface, said coating including a first superficial layer beneath the outer surface having a first refractive index nand a second layer beneath the first superficial layer having a second refractive index n, with n&#x3c;nand having the lowest refractive index of said polymer coating, and said coating exhibiting antireflective properties due to the difference between refractive indexes nand n, said refractive index difference within the coating resulting from a plasma, corona, and/or an ion beam treatment of an initial polymer coating, through the outer surface. Also, a method for manufacturing this optical article.

Optical article comprising a substrate with an antireflective coating

The invention relates to an article comprising a substrate having at least one major surface coated with a layer A of a material obtained by ion beam assisted vacuum deposition of at least one titanium oxide and of at least one organosilicate compound B, said material having a refractive index at 550 nm higher than or equal to 1.8, an extinction coefficient k at 550 nm lower than or equal to 0.02, and an H:E ratio higher than or equal to 0.046, where H and E designate the hardness of the material and the elastic coefficient of the material, respectively.

Article having optimised thermomechanical properties, comprising a layer of titano-organic nature

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Montreal, Canada

Oleg Zabeida