41.
    发明专利
    未知

    公开(公告)号:FR2907559B1

    公开(公告)日:2009-02-13

    申请号:FR0609183

    申请日:2006-10-19

    Applicant: ESSILOR INT

    Abstract: An electrically controllable optical component (10) comprises a transparent array of cells (3) and two transparent electrodes (5a, 5b) which are parallel and lying opposite each other on either side of the array of cells. Certain of the cells located between the two electrodes contain different electroactive materials, so that said cells exhibit different respective variations in at least one optical quantity in response to an electrical signal applied to the electrodes. An optical function is thus temporarily conferred on the component, resulting from gradients in the optical quantity that are formed parallel to the surface of the component.

    FILM TRANSPARENT COMPRENANT UN FILM DE BASE ET UN REVETEMENT

    公开(公告)号:FR2918463A1

    公开(公告)日:2009-01-09

    申请号:FR0704824

    申请日:2007-07-04

    Applicant: ESSILOR INT

    Abstract: Un film transparent comprend un film de base (1) et un revêtement disposé sous forme de portions (2a) séparées sur une face du film de base (S1). Des intervalles (3) de séparation entre les portions du revêtement permettent au film d'être déformé sans que des défauts visibles apparaissent dans le revêtement. Le film peut alors être appliqué sur une surface courbe (S0) d'un élément optique, notamment d'une lentille ophtalmique (10).

    COMPOSANT OPTIQUE ELECRO-COMMANDABLE COMPRENANT UN ENSEMBLE DE CELLULES

    公开(公告)号:FR2907559A1

    公开(公告)日:2008-04-25

    申请号:FR0609183

    申请日:2006-10-19

    Applicant: ESSILOR INT

    Abstract: Un composant optique électro-commandable (10) comprend un ensemble transparent de cellules (3) et deux électrodes transparentes (5a, 5b) parallèles et disposées en vis-à-vis de chaque côté de l'ensemble de cellules. Certaines des cellules situées entre les deux électrodes contiennent des matériaux électro-actifs différents, de sorte que lesdites cellules présentent des variations respectives différentes d'au moins une grandeur optique, en réponse à un signal électrique appliqué aux électrodes. Une fonction optique est ainsi conférée temporairement au composant, résultant de gradients de la grandeur optique formés parallèlement à la surface du composant.

    Use of random copolyester as primary coating deposited on surface of organic glass substrate of ophthalmic lens, to enhance impact resistance of lens

    公开(公告)号:FR2794533A1

    公开(公告)日:2000-12-08

    申请号:FR9906884

    申请日:1999-06-01

    Applicant: ESSILOR INT

    Abstract: Ophthalmic lens comprises organic glass substrate A having main front and rear faces, with at least one primer impact-resistant layer B deposited on at least one of substrate A faces, and comprising copolymer or mixture of copolymers selected from statistic copolymers; and at least one layer of anti-abrasion coating C deposited on layer B. Ophthalmic lens comprises organic glass substrate A having main front and rear faces, with at least one primer impact-resistant layer B deposited on at least one of substrate A faces, and comprising copolymer or mixture of copolymers selected from statistic copolymers of 3-10(preferably 3-6)C alkyl acrylate (a) and 1-2C alkyl methacrylate (b); and at least one layer of anti-abrasion coating C deposited on layer B. Layer B contains no photochromic agent with nucleus of formula (I), and preferably no photochromic agent at all. Layer B can be deposited on main rear face of A, or on each of both main faces, and has thickness 0.1-2.5 microns. Additional anti-reflection layer E can be deposited on anti-abrasion coat layer C. Organic substrate A has preferably negative optical power and thickness in center 0.7-1.2 mm. Independent claims are also included for: (1) the process of increasing of impact resistance of ophthalmic lens in which at least one of main faces of substrate A is coated with primary impact resistant layer B of composition as claimed, which is then coated with anti-abrasion layer C of composition as described below; and (2) ophthalmic lens as claimed, where statistic copolymer of A is a copolymer of butyl acrylate and methyl methacrylate with photochromic property.

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