Essilor International

Essilor International (compagnie Generale D'optique)

Christophe Valenti

Xingzhao Ding

Pascale Lacan

Yohann Felten

William Trottier-lapointe

Frédéric Guillain

Nicolas Maitre

Aude Lapprand

Pierre-Jean Calba

Gregory Hervieu

Yannick Moysan

Grégory Hervieu

William Trottier-Lapointe

The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any Ta2O5 layer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 50 nm, and a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer. The reflection performance on at least one main face is improved in scotopic conditions, fornear infrared light or for a wide range of angles of incidence.

Optical lens having an enhanced interferential coating and a multilayer system for improving abrasion-resistance

The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any TaOlayer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 100 nm, a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer, and a filtering interferential system that selectively reflects or transmits visible light in a narrow range of wavelengths.

Optical lens having a filtering interferential coating and a multilayer system for improving abrasion-resistance

The invention relates to an optical lens comprising a substrate having a front main face and a rear main face, at least one main face of which being successively coated with a first high refractive index sheet which does not comprise any TaOlayer, a second low refractive index sheet a third high refractive index sheet, a monolayer sub-layer having a thickness higher than or equal to 100 nm, and a multilayer interferential coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer. The mean reflection factor Ron said rear main face between 280 nm and 380 nm, weighted by the function W(λ) defined in the ISO 13666:1998 standard, is lower than 10%, for an angle of incidence of 35°.

Optical lens having an interferential coating and a multilayer system for improving abrasion-resistance

The invention concerns a method for producing an optical article suitable for edging comprising an antifouling layer on which there is deposited a temporary overlayer for assisting with edging, comprising:

Method for reducing or preventing the degradation of an antifouling layer or an optical article

The present invention relates to an ophthalmic lens whose front and rear faces are differentiated with respect to their hydrophobic properties. Said lens comprising a substrate having a hydrophobic front main face, and a rear main face whose external surface has a receding contact angle with water greater than or equal to 80&#xb0;, the external surface of said front main face having a receding contact angle with water lower than that of the rear main face. The invention presents various means for preparing such lenses, which may notably be obtained after deposition and then removal of temporary layers with different thicknesses on the two faces of the lens.

Ophthalmic lens having different anti-fouling properties on each of the two surfaces thereof and manufacturing methods

An ophthalmic lens that can be edged, includes a main front surface and a main rear surface, obtained by successive deposition on at least one of the main surfaces of the lens, of a first hydrophobic layer that has a thickness of between 6 and 16 nm and is obtained by deposition of a composition including a constituent A selected from fluorosilanes having a number average molar mass that is higher than, or equal to, 2000 g/mol, of a second hydrophobic layer that has a thickness of between 3 and 20 nm and is obtained by the deposition of a composition including a constituent B selected from the fluorosilanes having a number average molar mass than is lower than, or equal to, 900 g/mol, and of a layer including a metal fluoride having a thickness of between 22 and 50 nm.

Growing community of inventors

Charenton-le-Pont, France

Christophe Valenti