Essilor International

Essilor International (compagnie Generale D'optique)

Michèle Thomas

Montserrat Burgos

Xiaohong Zhang

Gerhard Keller

Sébastien Maurice

Marie Dubail

Olivier Beinat

Jean-Louis Sirjean

Charlène Pousse

Philippe Roisin

Luc Nouvelot

Frédéric Arrouy

The present invention relates to an optical article comprising: &#x2014;a substrate, &#x2014;one colouring component, so as to colour the substrate, and &#x2014;coated on the substrate (a), an asymmetric interferential multilayer stack comprising at least one absorbing layer which absorbs in the visible region at a wavelength ranging from 380 to 780 nm.

Colored optical article with neutral transmitting coating having asymmetric reflectance

Disclosed is a method for marking an optical article coated with an interference coating including at least two layers, an inner layer and an outer layer, and having reflection coefficient Re; by exposure of the inner layer, at a marking point, by way of a laser beam at a marking wavelength, in such a way as to ablate the inner layer and any layer further away from the substrate; the ablated area having a reflection coefficient Rm different from Re by at least 1%; the inner layer absorbing the marking wavelength to a greater degree than any layer further away from the substrate. Also disclosed is an optical article coated with an interference coating having at least two layers, an inner layer and an outer layer, the article including a marking pattern formed by local absence of layers.

Method for permanent visible marking of an optical article and marked optical article

The present invention relates to optical lens for correcting color vision for individuals with color vision deficiency comprising a substrate and an absorbing dye which has at least a minimum light transmission factor at a wavelength ranging from 515 nm to 80 nm that is lower than or equal to 40% and quickly varying transmission around 500 nm and around 595 nm.

Optical lens for correcting color vision

The invention relates to a method for producing an optical article having antireflection or reflective properties and comprising a substrate having at least one main surface, comprising the step of depositing an sub-layer onto a substrate's main surface, the step of treating the sub-layer by ionic bombardment and the step of depositing onto said sub-layer a multilayered stack comprising at least one high refractive index layer and at least one low refractive index layer. According to a preferred embodiment, the deposition of the sub-layer is conducted in a vacuum chamber in which a gas is supplied during the deposition step.

Method for producing an optical article coated with an antireflection or a reflective coating having improved adhesion and abrasion resistance properties

The present invention relates to an optical article having anti-reflection properties and high thermal resistance, comprising a substrate having at least one main face coated with a multi-layer anti-reflection coating comprising a stack of at least one high refractive index layer and at least one low refractive index layer, wherein the ratio: is higher than 2.1. If the anti-reflection stack comprises at least one low refractive index layer having a physical thickness &#x2267;100 nm which is not the outermost layer of the anti-reflection coating, said relatively thick layer and the underlying layers are not taken into account in Rcalculation.

Growing community of inventors

Charenton-le-Pont, France

Michèle Thomas