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    34.
    发明专利
    未知

    公开(公告)号：BR0005041A

    公开(公告)日：2001-01-02

    申请号：BR0005041

    申请日：2000-02-14

    Applicant: ESSILOR INT

    Inventor： FAVEROLLE FRANCINE ,  CANO JEAN-PAUL ,  WAJS GEORGES

    IPC: C08J7/04 ,  C09D151/00 ,  G02B1/10

    Abstract: The ophthalmic lens according to the invention comprises a substrate made of organic glass, having front and rear main faces, at least one primer layer deposited on at least one of the main faces of the substrate, the said primer layer comprising an aggregate of at least two-phase particles, a first phase of which consists of a polymer P1 with a soft character having a glass transition temperature (Tg) of less than 20° C. and a second phase of which consists of a polymer P2 with a hard character having a glass transition temperature (Tg) of greater than 50° C., and at least one layer of an abrasion-resistant coating composition deposited on the primer layer. Application to lenses for spectacles.

    Use of random copolyester as primary coating deposited on surface of organic glass substrate of ophthalmic lens, to enhance impact resistance of lens
    35.
    发明专利
    Use of random copolyester as primary coating deposited on surface of organic glass substrate of ophthalmic lens, to enhance impact resistance of lens 未知

    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

    Inventor： FAVEROLLE FRANCINE ,  MAISONNIER SYLVETTE ,  CANO JEAN PAUL ,  WAJS GEORGES

    IPC: G02B1/10 ,  G02C7/02

    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.

    36.
    发明专利
    未知

    公开(公告)号：ES2116691T3

    公开(公告)日：1998-07-16

    申请号：ES95400680

    申请日：1995-03-28

    Applicant: ESSILOR INT

    Inventor： CANO JEAN-PAUL ,  MAGNE JEAN-FRANCOIS ,  WAJS GEORGES

    IPC: B29C33/00 ,  B29C39/02 ,  B29C39/26 ,  G02C7/04 ,  B29C39/32 ,  B29C39/38 ,  B29C65/68 ,  B29D11/00 ,  B29L11/00

    Abstract: A mould for prodn. of optical lenses partic. for spectacles consists of two mould shells (10A, 10B) around which is established an annual sealing sleeve (14) defining together the required mould cavity (15). The sealing sleeve (14) is made of synthetic heat shrinkable material which by heat application is constructed over the two mould shells. Initially the sealing sleeve extends over and beyond the two shells so that where shrunk in position it is driven annularly between the shells (21) in the form of an inverted `U' so locating them axially. Also claimed are lenses formed from such a mould.

    37.
    发明专利
    未知

    公开(公告)号：FR2718075B1

    公开(公告)日：1996-06-07

    申请号：FR9403655

    申请日：1994-03-29

    Applicant: ESSILOR INT

    Inventor： CANO JEAN-PAUL ,  MAGNE JEAN-FRANCOIS ,  WAJS GEORGES

    IPC: B29C33/00 ,  B29C39/02 ,  G02C7/04 ,  B29C39/26 ,  B29C39/32 ,  B29C39/38 ,  B29C65/68 ,  B29D11/00 ,  B29L11/00 ,  B29C33/38

    Abstract: A mould for prodn. of optical lenses partic. for spectacles consists of two mould shells (10A, 10B) around which is established an annual sealing sleeve (14) defining together the required mould cavity (15). The sealing sleeve (14) is made of synthetic heat shrinkable material which by heat application is constructed over the two mould shells. Initially the sealing sleeve extends over and beyond the two shells so that where shrunk in position it is driven annularly between the shells (21) in the form of an inverted `U' so locating them axially. Also claimed are lenses formed from such a mould.

    38.
    发明专利
    未知

    公开(公告)号：DE69001587T2

    公开(公告)日：1993-10-07

    申请号：DE69001587

    申请日：1990-07-03

    Applicant: ESSILOR INT

    Inventor： YEAN LEANIRITH ,  WAJS GEORGES ,  MARTIN GERARD ,  GUERRERO PATRICK

    IPC: G01N21/41 ,  B01J4/00 ,  C08F2/00 ,  C08F2/02 ,  C08F18/14 ,  C08F18/24 ,  C08F218/00 ,  C08F263/00 ,  G02B1/04 ,  G02C7/02 ,  G02C7/04 ,  B29D11/00

    Abstract: The process according to the invention is of the kind according to which an additive substance (11) is diffused in a controlled manner within a base substance (10) which, made up of at least one partially polymerised monomer capable of resulting in a homopolymer of refractive index N1, is in the state of a gel, the additive substance itself being made up of at least one monomer capable of producing a homopolymer of refractive index N2 which differs from N1. According to the invention the additive substance (11) chosen is a mixture of at least two monomers (A, B) and the composition of this mixture is varied with time. Application to the production of components made of synthetic substance of optical quality suited especially to the production of ophthalmic lenses.

    METHOD OF MANUFACTURING A TRANSPARENT POLYMER MATERIAL ARTICLE WITH A REFRACTIVE INDEX GRADIENT
    39.
    发明专利
    METHOD OF MANUFACTURING A TRANSPARENT POLYMER MATERIAL ARTICLE WITH A REFRACTIVE INDEX GRADIENT 未知

    公开(公告)号：AU1146092A

    公开(公告)日：1992-09-10

    申请号：AU1146092

    申请日：1992-03-06

    Applicant: ESSILOR INT

    Inventor： YEAN LEANIRITH ,  WAJS GEORGES ,  MARTIN GERARD ,  GUERRERO PATRICK

    IPC: C08L101/00 ,  B29D11/00 ,  G02B1/04 ,  G02B3/00 ,  G02C7/02 ,  G02C7/04 ,  C08J5/00 ,  B29C39/10

    Abstract: This procedure is of the kind in which the absorption, by a base-polymer material, of an additive composition enclosing at least one monomer capable of leading to a polymer of different refractive index is ensured. … According to the invention, by choosing a swelling composition as the additive composition, a first preform (P1) is produced, with a first geometry (G1), from a polymer material at a rate of advance sufficient for it to be self-supporting, a confinement volume (14) is defined between this first preform and an abutment element having a second geometry (G2) corresponding to a greater volume, and it is brought into contact there with a quantity of swelling additive composition sufficient for the swelling, to which it is then subjected, to cause it to match, under stress, this second geometry (G2). … Application, especially, to the production of ophthalmic lenses. … …

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