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    15.
    发明专利
    未知

    公开(公告)号：FR2617763A1

    公开(公告)日：1989-01-13

    申请号：FR8709619

    申请日：1987-07-07

    Applicant: ESSILOR INT

    Inventor： BOURSET CLAUDE ,  WAJS GEORGES

    IPC: B29C35/12 ,  B29D11/00 ,  B29K96/00 ,  B29L11/00 ,  G02C7/04

    Abstract: In this method of manufacturing a flexible contact lens from a protein biological material, such as a protein polymer of the gelatine type or a type IV enriched human collagen, a hydrogel is first made by hydrating the protein biological material, in water or a physiological serum. A lens preform is then made from the hydrogel at a temperature between ambient temperature and the temperature at which the material liquefies, at which temperature the hydrogel has a paste-like consistency. This preform, which reproduces the shape of the finished lens with a greater or lesser degree of accuracy, but always with excess material, is then placed in a mold made from a low-loss dielectric material. The mold is in at least two parts which, when locked together, define a three-dimensional shape and a finished lens surface state. The hydrogel is then liquefied by irradiating the mold with an electromagnetic field at a frequency between 108 and 1010 Hz. The parts of the mold are then locked together and the hydrogel is then gelified by cooling it in the mold. Finally, the hydrogel is then removed from the mold and is cross-linked by contact with a cross-linking agent such as an aldehyde. The resulting lenses have excellent shape and surface state characteristics and are very well tolerated biologically.

    PRESSING FACILITY FOR THE PLIANT CONTACT LENSES
    16.
    发明专利
    PRESSING FACILITY FOR THE PLIANT CONTACT LENSES 未知

    公开(公告)号：CS209509B2

    公开(公告)日：1981-12-31

    申请号：CS81679

    申请日：1979-02-06

    Applicant: ESSILOR INT

    Inventor： BOURSET CLAUDE ,  LENNE WILLIAM

    IPC: G02C7/04 ,  B29B13/00 ,  B29C33/00 ,  B29C33/40 ,  B29C33/42 ,  B29C39/00 ,  B29C39/26 ,  B29C43/00 ,  B29C45/26 ,  B29C45/37 ,  B29C61/00 ,  B29D11/00 ,  B29L11/00

    Abstract: A molding assembly for casting soft contact lenses especially such lenses formed of hydrophobic material. Such a molding assembly comprises a molding cavity defined by the dies of the assembly and an annular gasket or sealing member joining the peripheries thereof. The perimeter of largest diameter of the molding cavity is defined by contact between a sealing ridge which is part of the concave die or the gasket or sealing member and a bearing surface which is part of the other of the concave die or the gasket or sealing member. The annular gasket or sealing member may have an annular skirt adapted to embrace the concave die in the closed position of the assembly. The gasket or sealing member is carried by the convex die and may be integrally formed in one piece with the convex mold.

    Contact lens disinfection unit
    19.
    发明专利
    Contact lens disinfection unit 未知

    公开(公告)号：FR2741962A1

    公开(公告)日：1997-06-06

    申请号：FR9514231

    申请日：1995-12-01

    Applicant: ESSILOR INT

    Inventor： BOURSET CLAUDE ,  COMTE LAURENT

    IPC: A45C11/00 ,  A61L12/12 ,  G02C13/00

    Abstract: The unit consists of a container (1) with a removable cap (10) and a support for the lenses and a catalyst block (30) which is independent of the cap and has elements to hold at least one lens in a position which allows a disinfectant solution to circulate round the lens placed in the container. It has a mounting (37) situated at one end of the support to hold a catalyst block (40) in place, and a gripper (39) at its other end. The cap is equipped with an element (14) to protect the catalyst block (40) which partially surrounds it to protect against accidental contact while the support (30) is out of the container. It comprises a lateral wall which is fixed at one end to the inside of the cap and is open at the other end (15), which has a retaining plate for the catalyst block.

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