Essilor International (compagnie Generale D'optique)

Essilor International (compagnie General D'optique)

Essilor International

International Compagnie Generale D'optique

Steven Weber

Peiqi Jiang

Yassin Yusef Turshani

Fadi O Adileh

Aref Ben Ahmed Jallouli

Aref Jallouli

Alexandra Roos

Joey Oliveros Obordo

Jean-Paul Cano

Haipeng Zheng

Gabriel Keita

Ronald A Berzon

Haifeng Shan

Robert Alan Valeri

John Biteau

Karl Arthur Klemm

Sidney Shaw White, Jr

Cedric Begon

Pascale Tardieu

Hoa Thien Dang

Hao Wen Chiu

Sheila M Tatman

Bruce Keegan

Arnaud Glacet

Paresh Kitchloo

Séverine Tisne

Cedric Bergon

Nathalie Lelard

Ophthalmic lens comprising an ophthalmic thermoplastic substrate and a light polarizing structure onto said substrate. The ophthalmic lens reduced warpage, in particular when submitted to mechanical, thermal and/or chemical treatment.

Ophthalmic lens with reduced warpage

An optical adhesive product and a process for manufacturing an optical adhesive product, laminated film ensembles, and laminated lenses. The optical adhesive product includes a glyoxal water solution that is pH adjusted for use as an optical adhesive that demonstrates a wet peel force strength above about 6 Newtons. A water based polymer, such as PVOH, may be added to the adhesive system. According to the process, the glyoxal adhesive system is manufactured and utilized to laminate TAC-PVA-TAC films together to form a polar film ensemble. The polar film ensemble is laminated to an optical substrate and in the case of an ophthalmic lens, surfaced, coated and edged. The optical adhesive product avoids film separation in the polar TAC-PAV-TAC film ensemble during edging.

Glyoxal adhesive system and process for manufacturing the same

A method using additive manufacturing technologies and processes to manufacture a three-dimensional ophthalmic lens with a high management level of the homogeneity during the construction of the ophthalmic lens, through a control of two technical characteristics of voxel: the ability to modify their viscosity, and the ability to inter-diffuse together to provide a final homogeneous element. These two technical characteristics are managed by the choice of component(s) used to manufacture each voxel and by the kind of physical and/or chemical treatment apply to each of them.

Additive manufacturing for transparent ophthalmic lens

A method and apparatus for elimination of lamination defects on progressive addition lenses. The lamination method uses a flexible bladder designed to apply pressure evenly across the lens surface. A spacer is positioned between a Hard Multi-Coat carrier and the flexible bladder. The spacer is located in a region of the carrier which is designated to deliver a coating to a section of the lens which is farthest from the carrier. The spacer asymmetrically increases the pressure applied to the carrier to eliminate lamination defects.

Asymmetric bladder compression for elimination of lamination defects on progressive addition lenses

A transparent, non elastomeric, high refractive index, impact resistant poly(thio)urethane/urea material comprising the reaction product of: a) at least one (&#x3b1;, &#x3c9;)-diiso(thio)cyanate cycloaliphatic or aromatic polysulfide prepolymer, and b) at least one aromatic primary diamine, in an equivalent molar ratio amine function/iso(thio)cyanate function ranging from 0.5 to 2, wherein, said prepolymer and diamine are free from disulfide (&#x2014;S&#x2014;S&#x2014;) linkage and wherein the (&#x3b1;, &#x3c9;)-diiso(thio)cyanate polysulfide prepolymer is the reaction product of at least one cycloaliphatic or aromatic diiso(thio)cyanate and at least one (&#x3b1;, &#x3c9;)-diol prepolymer.

High index and high impact resistant poly(thio)urethane/urea material, method of manufacturing same and its use in the optical field

The present invention relates to a process for transferring at least one coating onto at least one geometrically defined surface of a lens substrate to produced a lens substrate coated with at least one functional coating adhering to at least one geometrically defined surface through a layer of transparent adhesive composition.

Process for transferring coatings onto a surface of a lens substrate with most precise optical quality

The invention concerns a process for making a coated optical lens blank free of visible fining lines which comprises: (ix) providing an optical article having at least one fined but unpolished geometrically defined main face; (x) providing a mold part having an internal and external surface; (xi) depositing on said main face of said optical article or on the internal surface of the mold part a requisit amount of a liquid curable coating composition; (xii) moving relatively to each other the optical article and the mold part to either bring the coating composition into contact with the main face of the optical article or into contact with the internal face of the mold part; (xiii) applying pressure to the mold part to spread the liquid curable coating composition on said main face and form a uniform liquid coating composition layer onto the main face; (xiv) curing the liquid coating composition layer; (xv) withdrawing the mold part; and recovering the free of visible fining lines coated optical article.

Process for making a coated optical lens free of visible fining lines

Processes for applying a coated or uncoated film onto at least one geometrically defined surface of a lens substrate which comprises: providing a liquid hot melt adhesive (HMA) composition; providing a film having two opposite main surfaces; providing a lens substrate having at least one geometrically defined surface; and applying the film to the lens substrate surface using the HMA.

Process for applying a coated or uncoated film on a lens substrate

The invention concerns a photocurable adhesive composition comprising, based on total weight of photopolymerizable monomers and/or oligomers of the composition: 5 to 60 wt % of at least one mono or polyacrylate monomer or oligomer thereof (A); 5 to 50 wt % of at least one thio(meth)acrylate monomer or oligomer thereof (B); and 20 to 50 wt % of at least one aromatic dimethacrylate monomer or oligomer thereof (C); with the proviso that the composition does not contain a brominated monofunctional acrylate.

Photocurable adhesive composition and its use in the optical field

A process for applying under pressure a coated or uncoated film onto a main surface of a lens substrate using a heat activable adhesive layer formed between a face of the coated or uncoated film and the main surface of the lens substrate, said process comprising a heating step to achieve adhesion of the coated or uncoated film to the lens substrate main surface which comprises applying a microwave energy to a microwave heatable material situated in the vicinity of the heat activable adhesive layer so that the heat activable adhesive layer is only heated by conduction of the heat generated by the microwave heatable material.

Process and system for applying a coating onto a surface of a lens substrate

A transparent, non elastomeric, high index, impact resistant polythiourethane/urea material comprising the reaction product of:

High index and high impact resistant polythiourethane/urea material, method of manufacturing same and its use in the optical field

A method for laminating a functional film on to a plastic injection molded lens. An outer layer of the film is selected to perform an HMA-type function when subjected to the heat and pressure of the mold. After forming the lens, the mold is open and the film is loaded in to the empty insert. The residual heat and pressure bonds the film via the HMA to the lens, in a press lamination process. A functionally enhanced lens having a film intimately laminated on to one side.

Method for post-injection in mold lamination with an adhesively coated functionalized film

A process for transferring a coating onto at least one optical surface of a lens blank which comprises:

Process for transferring a coating onto a surface of a lens blank

The invention relates to a method for forming from a mold optical articles. These methods are particularly useful in preparing ophthalmic articles such as ophthalmic lenses, having several optical coatings thereon. The invention also relates to ophthalmic articles produced by these methods.

Growing community of inventors

Clearwater, FL, United States of America

Steven Weber