Patent application number | Description | Published |
20110128664 | Optical Article that Includes an Antistatic Layer Limiting the Perception of Interference Fringes, Having Excellent Light Transmission, and Method of Manufacturing It - The invention relates to an optical article comprising an organic or mineral glass substrate, a layer of a polymeric material and an intermediate layer possessing antistatic properties in direct contact with a main face of the substrate and the layer of polymeric material, the intermediate layer comprising a mixture of colloidal particles of at least one electrically conductive, colloidal metal oxide, of colloidal particles of at least one colloidal mineral oxide having a refractive index of 1.55 or less and optionally of a binder, in such proportions that the weight of electrically conductive colloidal metal oxide particles represents 50 to 97% of the total weight of colloidal particles present in the intermediate layer, said intermediate layer being an initially porous layer, the porosity of which have been filled either with material of the layer of polymeric material or with material of the substrate if the latter is made of an organic glass, so that the intermediate layer, after the initial porosity thereof has been filled constitutes a quarter-wave layer or an almost quarter-wave layer at the wavelength of 550 nm. | 06-02-2011 |
20120019767 | Optical Article Comprising a Temporary Anti-Fogging Coating with Improved Durability - The present invention relates to an optical article comprising a substrate provided with a coating comprising silanol groups on the surface thereof and, directly contacting this coating, an anti-fog coating precursor coating, said precursor coating having a static contact angle with water of more than 10° and of less than 50°, a thickness lower than or equal to 5 nm, and being obtained through the grafting of at least one organosilane compound having a polyoxyalkylene group comprising less than 80 carbon atoms and at least one silicon atom bearing at least one hydrolyzable group. The anti-fog coating precursor is converted into an actual anti-fog coating by applying on the surface thereof a film of a liquid solution comprising at least one surfactant. The anti-fog coating is immediately operational and provides long-lasting effects. | 01-26-2012 |
20120141770 | Method for Manufacturing a Substrate Coated with Mesoporous Antistatic Film, and Use Thereof in Ophthalmic Optics - The present invention relates to an article comprising a substrate having a main surface coated with a mesoporous antistatic coating, said coating having a refractive index lower than or equal to 1.5, and a silica based matrix functionalized by ammonium groups, said matrix having a hydrophobic character. Under certain conditions, the mesoporous antistatic coating is a single-layer anti-reflection coating or is part of a multi-layer anti-reflection coating. | 06-07-2012 |