Abstract: 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.

Abstract: 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.

Abstract: Systems for transferring at least one coating from a carrier to a surface of an optical article which comprise: an optical article to be coated; a flexible carrier bearing at least one coating to be transferred; an inflatable membrane; and a deformable part that is able to match the geometry of a surface of the optical article when a pressure is exerted on the optical article through inflation of the inflatable membrane. Also described are methods and processes of using such systems; carriers for use in such systems, methods, and processes; and optical articles made using such systems, methods, and processes.

Abstract: Systems for transferring at least one coating from a carrier to a surface of an optical article which comprise: an optical article to be coated; a flexible carrier bearing at least one coating to be transferred; an inflatable membrane; and a deformable part that is able to match the geometry of a surface of the optical article when a pressure is exerted on the optical article through inflation of the inflatable membrane. Also describes are methods and processes of using such systems; carriers for use in such systems, methods, and processes; and optical articles made using such systems, methods, and processes.

Abstract: An inflatable membrane pressing apparatus for a film or coating application or lamination process comprising: a support; an inflatable membrane device comprising a pressurized fluid accumulator a face of which is partly formed by an inflatable membrane; a holding frame; and a pressure release valve for controlling the pressure of pressurized fluid within the accumulator during use; wherein, during use, pressurized fluid is introduced and released from the fluid accumulator to inflate and deflate the membrane. Also decribed are methods and processes of using such an apparatus and articles made using the apparatus.

Abstract: The present invention relates to a process for transferring at least one coating onto at least one geometrically defined surface of a lens substrate.

Abstract: A method of applying a coated or uncoated film onto a main surface of a lens substrate. In some cases, the film is a coated film having one surface bearing a coating or a coating stack which is transferred from the film to the lens substrate main surface.

Abstract: The present invention provides a method for applying a coated or uncoated film onto at least one surface of a lens substrate. The method can be performed without the use of an adhesive during the application process. The film can be a coated film having one surface bearing a coating or a coating stack which is transferred from the film to the lens substrate main surface at the end of the application step, after withdrawal of the film.

Abstract: 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.

Abstract: A process for making a coating layer of a curable composition on a toric surface of an optical article, in particular an ophthalmic lens or lens blank, and in particular a functional coating layer; compositions and apparatus useful for the practice of the process; and products obtained from the practice of the process.

Abstract: The invention concerns a process for making a coated optical lens blank free of visible fining lines which comprises: (i) providing an optical article having at least one fined but unpolished geometrically defined main face; (ii) providing a mold part having an internal and external surface; (iii) depositing on said main face of said optical article or on the internal surface of the mold part a requisite amount of a liquid curable coating composition; (iv) 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; (v) 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; (vi) curing the liquid coating composition layer; (vii) withdrawing the mold part; and (viii) recovering the free of visible fining lines coated optical article.

Abstract: 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.

Abstract: 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 monofuntional acrylate.

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

Abstract: The composite ophthalmic lens (1) comprises a first layer (2), at least 200 micrometers thick, forming a front part of said lens, of a first polymeric material of refractive index higher than or equal to 1.60 and having a front face (4) constituting a front optical surface S1, and a second layer (3), at least 200 micrometers thick, of a second polymeric material forming a rear part of said lens and having a rear face (6) constituting a rear optical surface S2, the interface (5) between these two layers constituting an optical surface S3 parallel to the rear optical surface S2.

Abstract: 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.

Abstract: The invention concerns novel polymerisable compositions and optical lenses with high refractive index obtained from said compositions, characterized in that they comprise as constituents base copolymerisable monomers at least 85 wt. % of the total weight of copolymerisable monomers present in the composition: of a mixture M, for 100 parts by weight of the mixture; of (A) 20 to 80 parts of one or several, preferably only one, non-aromatic compounds (I) comprising two thio(meth)acrylate functions, and (B) 80 to 20 parts of a compound of formula (I) in which R1 and R2 represent, independently of each other, H or CH3 and m+n has a mean value from 0 to 20 inclusively; and 3 to 30% by weight relative to the weight of mixture M of a polythiol; the composition containing less than 5 wt. % of other aromatic thio(meth)acrylate copolymerisable, cyclanic or vinyl aromatic mono(meth)acrylate monomers. The invention is applicable to the manufacture of spectacle lenses.

Abstract: The present invention relates to polymerizable compositions for the manufacture of optical lenses with a high refractive index and a high Abbe number, and optical lenses comprising these compositions.

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

Abstract: A process for polymerizing episulfide monomers comprising the steps of: (c) mixing to an episulfide monomer or a mixture of episulfide monomers an effective amount of at least one photopolymerization catalyst selected from the group consisting of (cyclopentadienyl) ruthenium and osmium complexes and an effective amount of at least a co-catalyst selected from phosphonium salts, phosphines and amines; and (d) irradiating the mixture of (a) with an ultra-violet radiation to polymerize the mixture.