Essilor International (compagnie Generale D'optique)

Essilor International (compagnie General D'optique)

Essilor of America, Inc.

Essilor International

Hoa Thien Dang

Sheila M Tatman

Sidney Shaw White, Jr

Robert Alan Valeri

Ronald Harmon

Yassin Yusef Turshani

Ronald A Berzon

Steven Weber

Xu Chen

Karl Arthur Klemm

Pascale Tardieu

Joey Oliveros Obordo

Anne Robert

Sidney S White, Jr

Matthew James Lockwood

Joshua Hazle

Narendra Borgharkar

Kelly Benjamin

Julie S Berzon

Cindy Burnshire

Matthew Lockwood

Yannick Moysan

Sheila Tatman

Sydney Jr Shaw White

Eric Glen Johnson

Sidney Shaw White Jr

Kimberly Denise Oliver

The present invention relates to a curable composition providing upon curing a transparent antistatic coating comprising a silica organosol, a salt comprising an alkali cation and a Bronsted acid. The invention further relates to optical articles comprising a substrate at least partially coated with a transparent antistatic coating formed by depositing onto substrate and curing the above curable composition. The obtained optical articles exhibit enhanced antistatic properties, high optical transparency, low haze and good mechanical properties, in particular a good abrasion resistance.

Composition for transparent antistatic coating

Process for obtaining a hard coated article having anti-fouling properties, including, for example, an optical article such as an ophthalmic lens, comprising a substrate coated with a hard coating providing abrasion resistance and hardness and adhesion to the anti-fouling coating, and the article obtained from such process.

Process for obtaining a hard coated article having anti-fouling properties

A method and coating used to prepare a photochromically-enabled bifocal ophthalmic lens. The method and equipment includes injection molding a single vision lens, for example, from polycarbonate. The clamp opens vertically and the top insert is exchanged for a bifocal mold having a base curve similar to the single vision lens. The thermoset coating includes compounds from several acrylate classes, and is applied to the single vision lens. The coating may include a photochromic dye. The coating is also formulated to receive a photochromic solution through an imbibition process.

Method for adding a thermoset overmold layer to a lens within a mold

A method that includes providing a lens having a first side, a second side, and an anti-reflective or mirror coating on the first side; depositing a heat-curable coating on the second side of the lens; and heating the heat-curable coating without damaging the anti-reflective or mirror coating. Another method that includes providing a non-pure polycarbonate lens having a first side, a second side, and a first coating on the first side; depositing a heat-curable coating on the second side of the lens; and heating the heat-curable coating without damaging the first coating. Other methods are also disclosed.

Lens coating curing methods

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.

Method for forming on-site a coated optical article

Abrasion-resistant coating composition, process for making such coating composition and article coated therewith

Abrasion-resistant coating composition process for making such coating composition and article coated therewith

A method is disclosed for imparting impact resistance to a plastic ophthalmic lens. The method consists of applying a coating of a multifunctional acrylate in a solvent mixture to the back surface of the lens, and curing the multifunctional acrylate to form an impact resistance imparting coat. The multifunctional acrylate preferably has at least about 40%, by weight, of a difunctional acrylate. The multifunctional acrylate preferably has a glass transition temperature less than about 60.degree. C. Lenses with an impact resistance imparting coat on the back, and an abrasion resistant coat on at least the front of the lens, are also disclosed.

Impact resistant plastic ophthalmic lens

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Tampa, FL, United States of America

Hoa Thien Dang