Essilor International (Compagnie Generale D'optique)

Essilor International (Compagnie General D'optique)

Essilor International

Steven Weber

Peiqi Jiang

Fadi O. Adileh

Yassin Yusef Turshani

Fadi O Adileh

Joey Oliveros Obordo

Aref Ben Ahmed Jallouli

An inflatable membrane apparatus () comprising (a) a fluid accumulator () having an upper and a lower face and a fluid entrance (), said lower face being partly formed by an inflatable membrane (), and (b) a trunconical part () projecting outwardly from the lower face of the accumulator whose greater base is closed by at least part of the inflatable membrane () and smaller base forms a circular opening, whereby, when pressurized fluid is introduced into the accumulator (), deformation of the inflatable membrane () is guided by the trunconical part.

Inflatable membrane apparatus and process for transferring a coating onto a surface of a lens blank

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 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

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

The invention concerns a process for forming at least one coating layer on a toric surface of an optical article which comprises: providing an optical articlehaving a toric surface comprising a first principal meridian with a lower radius of curvature r and a second principal meridian with a higher radius of curvature R (r&#x3c;R) and a periphery; depositing on the toric surface at least two dropsof the liquid curable composition, each within one of two opposite sectors S, Scentered on the first principal meridian of lower radius of curvature r and having an apex angle up to 40&#xb0;; applying pressure on said pre-measured amount of liquid curable composition to cause said liquid curable composition to spread over the toric surface of the optical article; curing the liquid curable composition; and recovering an optical article coated with at least one coating layer.

Process for forming a coated layer on a toric surface of an optical article

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 present invention relates to an improved process or method for transferring a coating onto at least one surface of a lens blank which can be implemented in a short period of time without any risk of deformation of the lens blank.

Apparatus and process for transferring a coating onto a surface of a lens blank

The present invention relates to room temperature or thermally polymerizable/curable episulfide based compositions for making polymerized/cured episulfide based resins, and in particular episulfide based compositions which can be fastly polymerized/cured, as well as to a room temperature or thermal polymerization process for making such episulfide based resins.

Growing community of inventors

Tampa, FL, United States of America

Fadi O Adileh