Essilor International (compagnie Generale D'optique)

Essilor International

Chefik Habassi

Aref Jallouli

Mathieu Meynen

Ronald A Berzon

Gabriel Keita

Eric Gacoin

Leang Ly

Ludovic Jouard

Vincent Roptin

Alexandra Roos

Cédric Buchon

Antoine Videmann

Matthieu Koscher

Bernard Parant

Gerard Martin

Gerard Gelly

Yannick Moysan

Thierry Devanneaux

Hervé Acheritobehere

Peggy Coue

Marcel Yaigre

The invention relates to a mold () for manufacturing an ophthalmic lens or an ophthalmic lens blank called a puck (), equipped with an insert (), said mold comprising a first portion (A) intended to mold the front face of the ophthalmic lens or puck, a second portion (B) intended to mold the back face of the ophthalmic lens or puck and at least one third portion (C) intended to mold a peripheral lateral face of the ophthalmic lens or puck. According to the invention, said mold () comprises at least one recess (BBBB) for positioning the insert (), before and during the molding.

Mould and process for manufacturing an ophthalmic lens equipped with an insert

The invention relates to a process for manufacturing an ophthalmic lens equipped with an insert (), by means of a mold, comprising: &#x2014;a step of molding a puck () comprising two faces (A,B) and said insert () positioned between said faces; and &#x2014;a step of machining at least one of said faces (A,B) of said puck in order to form one of the front or back faces of said ophthalmic lens, the insert () being positioned relative to one portion of the mold before said molding step, According to the invention, an element associated with the insert or an imprint of this element left in the puck after the element has been removed comprises at least one of its portions providing a positional reference relative to said insert () in the machining step.

Process for manufacturing an ophthalmic lens equipped with an insert

Disclosed is an optical article comprising on at least one of its main surfaces an outer hydrophobic and/or oleophobic coating and in direct contact with the outer hydrophobic and/or oleophobic coating a dual-layer temporary coating, wherein the dual-layer temporary coating is removable and comprises: a first layer, in direct contact with the outer hydrophobic and/or oleophobic coating comprising halogenated olefin polymers or polyurethanes; and a water barrier second layer comprising a polymer or polymer mixture acting as a water barrier deposited on the first layer comprising at least one vinyl polymer, polyepoxide, polyepisulfide, polyester, polyether, polyester-ether, poly(meth)acrylate, polythio(meth)acrylate, styrene polymer, or cellulosic polymer.

Optical article having a dual layer temporary coating

The invention relates to a method for treating an optical lens coated onto at least one of the main surfaces thereof with an outer hydrophobic and/or oleophobic coating, and for making it capable of undergoing an edging process, comprising a step of treating the peripheral area of said coated main surface which results in the removal of the hydrophobic and/or oleophobic coating and/or in the modification of said coating that lowers the hydrophobic character thereof, and a step of depositing a temporary polymeric coating onto said main surface of the lens so as to cover at least partially the hydrophobic and/or oleophobic coating and the peripheral area treated during the previous step, in order to provide an optical lens having onto at least one of the main surfaces thereof an outer hydrophobic and/or oleophobic coating and, in direct contact with said hydrophobic and/or oleophobic coating, a temporary polymeric coating adhering to the surface of the coated lens. The invention also relates to an edging method and to a lens capable of undergoing an edging process.

Method for preparing the surface of a lens including an anti-soiling coating for edging the same

A method for manufacturing an ophthalmic lens includes molding the lens () between a first mold portion (A) and a second mold portion (B) with the first entry surface (A) formed by making in the lens a molded cavity by means of a stud (C) secured to the second mold portion (B), and that the light guide () is temporarily secured to the stud (C) prior to molding. The second entry surface (B) is formed by making in the lens a molded cavity by means of a mold insert () temporarily secured to the light guide () prior to molding, the first mold portion (A) being placed above said insert ().

Method of manufacturing an ophthalmic lens for providing an optical display

The present invention relates to a method for treating an optical lens coated on at least one of the main surfaces thereof with a hydrophobic and/or oleophobic external coating, to make it capable of undergoing an edging process, comprising a step of depositing onto at least one part of the hydrophobic and/or oleophobic external coating a temporary adhesive composite film, said adhesive composite film comprising a pre-formed film, one main surface of which is coated with a pressure-sensitive adhesive layer, said adhesive layer directly contacting the hydrophobic and/or oleophobic coating, the pre-formed film modulus of elasticity in tension E' being higher than or equal to 4200 MPa, and the rupture stress of the assembly composed of said adhesive film bonded to a polycarbonate specimen coated with a fluorinated silane layer, measured under tensile stress in accordance with the shear strength evaluation standard NF EN 1465, being higher than or equal to 0.05 MPa. The present invention further relates to an edging method and to a lens capable of undergoing a successful edging process.

Method for treating an optical lens for the edging thereof

The present invention relates to an optical article comprising on one of the main surfaces thereof an external water- and/or oil-repellent coating, characterized in that a temporary coat of a dried polyurethane latex-based composition is directly deposited onto the external water- and/or oil-repellent coating.

Optical article comprising an external water- and/or oil-repellent coating coated with a temporary coating

Disclosed is a cleaning solution comprising, based on the total weight of the solution: (a) more than 50% by weight of at least one lactone (component A); (b) and 1 to 10% by weight of at least one surfactant compound (component B) having a HLB ranging from 8 to 15 and selected from the group consisting of compounds of formula wherein: Rdenotes a hydrocarbon group comprising from 1 to 20 carbon atoms; n&#x2033; is an integer from 1 to 5, X denotes a valence link, &#x2014;O&#x2014;, &#x2014;OCH, C&#x2550;O or (CH), k being an integer varying from 1 to 2; Y denotes (RO)H wherein j is an integer ranging from 2 to 40, and R is a divalent hydrocarbon group, and compounds of formula wherein l is an integer from 6 to 13 and m is an integer from 3 to 15.

Composition for cleaning soiled items, namely optical items, and method for cleaning said items

The invention relates to a composition comprising one or more polymerizable monomers, comprising at least one masking agent selected amongst cyclic ethers and at least one perfume selected amongst naturally occurring musks and extracts thereof, synthetic musks, and mixtures thereof.

Growing community of inventors

Charenton-le-Pont, France

Chefik Habassi