Patent application number | Description | Published |
20080265452 | Inflatable Membrane Pressing Apparatus for a Film or Coating Application or Lamination Process - An inflatable membrane pressing apparatus ( | 10-30-2008 |
20090283924 | Method for post-injection in mold lamination with an adhesively coated functionalized film - 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. | 11-19-2009 |
20090291206 | Process for Applying a Coating onto a Fresnel Lens Forming Surface - Disclosed is a process for coating at least one geometrically defined surface of an optical article's substrate. The process can include: (a) providing a removable carrier made of plastic material and having an internal surface and external surface; (b) providing an optical article comprising a substrate having at least one geometrically defined surface forming a Fresnel lens; (c) depositing a curable coating composition onto either the at least one surface forming a Fresnel lens; (d) moving the carrier and optical article relatively to each other; (e) applying a pressure onto the external surface of the carrier to spread out the curable coating composition to cover said at least one surface forming a Fresnel lens; (f) curing the layer of curable coating composition; (g) withdrawing the removable carrier to recover the substrate of the optical article having at least one Fresnel lens forming surface coated with the cured coating composition. | 11-26-2009 |
20100110567 | BI-LAYER ADHESIVE FOR LENS LAMINATION - A method for laminating a film on to an optical article and a bi-layer adhesive for use in the method. The bi-layer adhesive includes a latex adhesive layer and an HMA layer sequentially disposed on the film and dried to form a solid layer of uniform thinness throughout to provide optical quality. Various types of films may be employed to provide an optical function. Following optional pre-treatment steps, the adhesives are coated on to the film. An optical hot press technique is used to deliver heat and pressure over a short period of time to form a functionally-enhanced optical article with high adhesive strength. | 05-06-2010 |
20110009591 | High Index and High Impact Resistant Poly(thio)urethane/Urea Material, Method of Manufacturing Same and Its Use in the Optical Field - A transparent, non elastomeric, high refractive index, impact resistant poly(thio)urethane/urea material comprising the reaction product of: a) at least one (α, ω)-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 (—S—S—) linkage and wherein the (α, ω)-diiso(thio)cyanate polysulfide prepolymer is the reaction product of at least one cycloaliphatic or aromatic diiso(thio)cyanate and at least one (α, ω)-diol prepolymer. | 01-13-2011 |
20110129599 | Provess for Transferring Coatings Onto a Surface of a Lens Substrate with Most Precise Optical Quality - 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. | 06-02-2011 |
20110164329 | FRESNEL LENS COATING PROCESS - The present method for coating a Fresnel lens blank includes providing an uncoated Fresnel lens blank having a structure surface and a non-structured surface, providing a transparent mold part having molding surface substantially matching the base curvature of the Fresnel lens, depositing a metered quantity of coating resin between the molding surface and the structured surface of the Fresnel lens, applying pressure between the Fresnel lens and the mold part while maintaining the distance between the molding surface and the structure surface so that the thickness of the coating is greater than 1.5 times the Fresnel structural height of the structured surface and less than 5 times of the Fresnel structure height of the structured surface and curing the resin coating in situ by directing the incident UV radiation at the Fresnel lens. A double coating may be employed for obtaining both higher optical power and better mechanical properties. | 07-07-2011 |
20110165343 | FRESNEL LENS COATING PROCESS - The present method for coating a Fresnel lens comprises providing an uncoated Fresnel lens blank having a structure surface and a non-structured surface, providing a transparent mold part having molding surface substantially matching the base curvature of the Fresnel lens, depositing a metered quantity of coating resin between the molding surface and the structured surface of the Fresnel lens, applying pressure between the Fresnel lens and the mold part while maintaining the distance between the molding surface and the structure surface so that the thickness of the coating is greater than 1.5 times the Fresnel structural height of the structured surface and less than 5 times of the Fresnel structure height of the structured surface and curing the resin coating in situ by directing the incident UV radiation at the Fresnel lens. | 07-07-2011 |
20110242657 | BI-LAYER ADHESIVE FOR LENS LAMINATION - A method for laminating a film on to an optical article and a bi-layer adhesive for use in the method. The bi-layer adhesive includes a latex adhesive layer or a specific silane adhesive and an HMA layer sequentially disposed on the film and dried to form a solid layer of uniform thinness throughout to provide optical quality. Various types of films may be employed to provide an optical function. Following optional pre-treatment steps, the adhesives are coated on to the film. An optical hot press technique is used to deliver heat and pressure over a short period of time to form a functionally-enhanced optical article with high adhesive strength. | 10-06-2011 |
20120236255 | ADHESIVE SYSTEM FOR A LAMINATED LENS AND METHOD FOR APPLYING SAME - A method for laminating a functional film on to an optical base element and a tri-layer adhesive system for use in the method. The tri-layer adhesive includes a first latex adhesive layer disposed on the functional film and a second latex adhesive layer disposed on the optical base element. An HMA layer is disposed in between the latex layers to form a tri-layer adhesive to permanently retain the functionalized film on the optical base element. The method includes first coating a latex adhesive on the functional film and second coating a latex adhesive on the optical base element. An HMA is then coated on to one of the dried latex adhesive layers. The film is hot pressed on to the optical base element with the HMA sandwiched in between the latex layers to form a laminated optical device. | 09-20-2012 |
20130208239 | PROCESS FOR MANUFACTURING A POLARIZED OPTICAL ARTICLE AND POLARIZED OPTICAL ARTICLE - A process for manufacturing a polarized optical device and the resulting optical device. In the process, an optical device is coated with an adhesive. A PVA polarizing film is moistened to render it formable. The PVA polarizing film is laminated on to the adhesive coating so that the PVA polarizing film forms to the shape of the optical device. The film, adhesive, device ensemble is then heat annealed. The PVA polarizing film is then contacted with a boric acid solution to crosslink the PVA so that it can withstand use and further processing. A polarized optical device includes an adhesive disposed between an optical base element and a PVA polarizing film. | 08-15-2013 |
20130278892 | METHOD OF MAKING OPHTHALMIC LENSES WITH A STRUCTURED SURFACE - A method for fabricating a Fresnel lens or other lens having a structured surface such as refractive and/or diffractive bi-focal or other multi-focal lenses includes press-coating the structured surface with a low or very low refractive index coating material. The coating is sufficient thick to adequately cover the structured surface so that a smooth coating surface with good optical properties is obtained, for example in the case of a Fresnel structure a thickness greater than 1.5 times and less than 5 times the Fresnel structure height, and is cured in situ. A film, e.g., of PET, PC or PU or a film stack, e.g. a TAC/PVA/TAC film stack is prepared and a heat melting adhesive is applied to the side of the film or film stack to be contacted with the coated structured surface of the lens blank. The film or film stack is then laminated to the cured coating. | 10-24-2013 |