42.
    发明专利
    未知

    公开(公告)号:AT474712T

    公开(公告)日:2010-08-15

    申请号:AT06770315

    申请日:2006-05-15

    Applicant: ESSILOR INT

    Abstract: The invention relates to an improvement for applying a layered structure (1) onto a convex surface of a lens (10). After thermoforming the layered structure, a curvature direction of the layered structure is inverted. The structure is then applied on the lens surface by continuously pushing the structure (1) against the lens surface, starting from a contact point between a convex surface of the structure and the convex surface of the lens. The curvature direction of the layered structure is then inverted again, so that it recovers the curvature direction that resulted from thermoforming. Stresses within the layered structure are then reduced, and the structure can be assembled with the lens without defects.

    43.
    发明专利
    未知

    公开(公告)号:AT471971T

    公开(公告)日:2010-07-15

    申请号:AT05759645

    申请日:2005-05-03

    Applicant: ESSILOR INT

    Abstract: The invention relates to a method of producing a substrate which is coated with a mesoporous layer and to the use thereof in ophthalmic optics. The inventive method comprises the following steps comprising: preparing a precursor sol containing (i) a precursor agent that is selected from compounds having formula M(X)4 (I), in which X is a hydrolysable group and M represents silicon or a tetravalent metal and mixtures thereof, (ii) at least one organic solvent, (iii) at least one pore-forming agent and (iv) water; depositing a film of the precursor sol on a main surface of the substrate; optionally consolidating the mesoporous structure of the deposited film; eliminating the pore-forming agent; and recovering the substrate coated with the mesoporous layer. The method is characterized in that: (i) the pore-forming agent is eliminated at a temperature of less than or equal to 150° C.; and (ii) the method comprises a step involving the introduction of at least one reactive agent bearing at least one hydrophobic group, before the deposition step and/or after said step.

    Optical article comprising a multilayer anti-reflective coating and method for production thereof

    公开(公告)号:AU2004262099B2

    公开(公告)日:2009-09-10

    申请号:AU2004262099

    申请日:2004-07-28

    Applicant: ESSILOR INT

    Abstract: The invention relates to an optical article, for example, an ophthalmic lens, comprising at least one multilayer anti-reflective coating on a transparent substrate made from organic or mineral glass. Said coating comprises successively and starting at the substrate, a layer of material with high refractive index (HI), made from a hybrid organic/inorganic matrix within which are dispersed particles of mineral oxide or chalcogenide with a diameter of 2 to 50 nm and a layer of material with low refractive index (BI), obtained by hardening of a composition comprising at least one silane precursor (I) with 4 hydrolysable groups and at least one fluorosilane precursor (II), said second composition comprising at least 10% in mass of fluorine in a theoretical dry extract and with a molar ratio I/I+II greater than 80%.

    45.
    发明专利
    未知

    公开(公告)号:FR2896886B1

    公开(公告)日:2008-07-11

    申请号:FR0650380

    申请日:2006-02-02

    Applicant: ESSILOR INT

    Abstract: The present invention relates to a method for making a substrate coated with a mesoporous photochromic film, comprising: a) preparing a precursor sol of a mesoporous film comprising an inorganic precursor agent, at least one organic solvent, water, at least one pore-forming agent and one hydrophobic precursor agent bearing at least one hydrophobic group; b) depositing a film of the precursor sol onto a main surface of a substrate; c) removing the pore-forming agent from the film resulting from the previous step at a temperature @150° C.; d) impregnating the mesoporous film resulting from step c) with a solution comprising at least one photochromic agent. In an alternative embodiment, the photochromic agent is directly introduced into the precursor sol. In an alternative embodiment of the previous alternative embodiment, the precursor sol does not comprise any hydrophobic precursor agent but the photochromic film is made hydrophobic by a treatment subsequent to its preparation.

    47.
    发明专利
    未知

    公开(公告)号:DE602004009586D1

    公开(公告)日:2007-11-29

    申请号:DE602004009586

    申请日:2004-07-28

    Applicant: ESSILOR INT

    Abstract: The invention relates to an optical article, for example, an ophthalmic lens, comprising at least one multilayer anti-reflective coating on a transparent substrate made from organic or mineral glass. Said coating comprises successively and starting at the substrate, a layer of material with high refractive index (HI), made from a hybrid organic/inorganic matrix within which are dispersed particles of mineral oxide or chalcogenide with a diameter of 2 to 50 nm and a layer of material with low refractive index (BI), obtained by hardening of a composition comprising at least one silane precursor (I) with 4 hydrolysable groups and at least one fluorosilane precursor (II), said second composition comprising at least 10% in mass of fluorine in a theoretical dry extract and with a molar ratio I/I+II greater than 80%.

    49.
    发明专利
    未知

    公开(公告)号:FR2858691A1

    公开(公告)日:2005-02-11

    申请号:FR0350397

    申请日:2003-08-05

    Applicant: ESSILOR INT

    Abstract: A polymerizable anti-scratch coating composition comprising at least one alkoxysilane and/or a hydrolyzate of it, anisotropic particles of one or more metal oxides and/or oxyhydroxides with a principal axis D1 of length 400 nm or less and, transversely to it, a minimum dimension D2 and a maximum D3 such that D3 is greater than or equal to D2, D1/D2 = 11or more and D1/D3 = 10 or more and optionally a polymerization catalyst. Independent claims are included for (1) a substrate coated by deposition and hardening of the claimed composition; (2) the particles as defined in the main and dependent claims.

    50.
    发明专利
    未知

    公开(公告)号:FR2858420A1

    公开(公告)日:2005-02-04

    申请号:FR0350380

    申请日:2003-07-29

    Applicant: ESSILOR INT

    Abstract: The invention relates to an optical article, for example, an ophthalmic lens, comprising at least one multilayer anti-reflective coating on a transparent substrate made from organic or mineral glass. Said coating comprises successively and starting at the substrate, a layer of material with high refractive index (HI), made from a hybrid organic/inorganic matrix within which are dispersed particles of mineral oxide or chalcogenide with a diameter of 2 to 50 nm and a layer of material with low refractive index (BI), obtained by hardening of a composition comprising at least one silane precursor (I) with 4 hydrolysable groups and at least one fluorosilane precursor (II), said second composition comprising at least 10% in mass of fluorine in a theoretical dry extract and with a molar ratio I/I+II greater than 80%.

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