Essilor International (compagnie Generale D'optique)

Rolic Ag

Sylvette Maisonnier

Jean-Paul Cano

Pascale Tardieu

Claudine Biver

Bernadette Charleux

Jean-Pierre Vairon

Anne Robert

Guillaume Giraudet

Georges H Wajs

Thomas Bachels

Noémie Lesartre

Nathaly Vassal

The invention relates to polarized and abrasion-resistant article comprising: a) a polarized layer applied to a substrate, said polarized layer including an oriented liquid crystal polymer layer (LCP) including at least one dichroic dye, said liquid crystal layer being coated on a photo-orientation layer, and b) an abrasion-resistant coating applied to the polarized layer on said substrate. The invention also relates to a process for manufacturing said articles, and to the use of the above-mentioned article for the manufacturing of optic glasses or lenses.

Polarized and abrasion-resistant optical article and process for manufacturing thereof

The method of the invention comprises: a) forming a hydrophilic polyurethane prepolymer with isocyanate end groups, by the polyaddition reaction of at least one polyol and at least one diisocyanate in the presence of at least one internal emulsifying agent; b) mixing the polyurethane prepolymer with a photochromic agent; c) adding water or a mixture of water and solvent, under agitation, to the mixture of the polyurethane prepolymer and the photochromic agent, to form an emulsion; and d) adding at least one chain extension agent to the emulsion and performing a chain extension reaction to give the final photochromic polyurethane latex. Application to the production of ophthalmic articles having photochromic properties.

Method for preparing a photochromic polyurethane latex and application to ophthalmic optics

The invention relates to a method for producing a polarising ophthalmic lens adapted to the eye/head behaviour of the wearer thereof and to said lens. The inventive ophthalmic lens comprises several areas associated to differently oriented polarising filters. The size and position of at least certain areas are determined according to the lens wearer's eye/head behaviour.

Polarizing ophthalmic lens adapted to a wearer's eye/head behavior

This invention relates to a method for preparing a photochromic latex, photochromic thin films obtained therefrom, and articles coated with such thin films, in particular photochromic ophthalmic lenses.

Method for preparing a latex with photochromic properties and uses thereof, particularly in ophthalmology

Process for obtaining a photochromic latex

Method for obtaining a stabilized photochromic latex, latex obtained, and application to ophthalmic optics

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Moisselles, France

Sylvette Maisonnier