Process for manufacturing an optical article with an added value film

    公开(公告)号:AU2020306616A1

    公开(公告)日:2021-11-25

    申请号:AU2020306616

    申请日:2020-06-23

    Applicant: ESSILOR INT

    Abstract: The disclosure relates to a process for manufacturing an optical article (1), comprising:  Providing an optical article (1) manufactured by additive manufacturing, the optical article (1) having a first main surface (2) and a second main surface (3);  Providing at least one added value film (5) comprising at least one added value layer (6),  Attaching the at least one added value layer (6) onto at least one of the two main surfaces (2, 3) of the optical article (1) by laminating said at least one added value film (5) onto said at least one main surface (2, 3).

    44.
    发明专利
    未知

    公开(公告)号:DE602004020373D1

    公开(公告)日:2009-05-14

    申请号:DE602004020373

    申请日:2004-10-27

    Applicant: ESSILOR INT

    Abstract: A method for molding a lens, comprising: providing a vertically-oriented molding cavity (40) having a top (30) and a bottom (32) and being defined by at least (a) a first mold piece (14) having a concave surface, (b) a second mold piece (12) having a convex surface, and (c) a closure member (16) disposed around and attached to the first and second mold pieces, a sealing material (18) having self-sealing properties being connected to the closure member (16) and positioned near the bottom (32); puncturing the sealing material (18) and the closure member (16) near the bottom (32), thereby creating an opening in the sealing material (18) having a size that reduces after the instrument (50) is retracted; introducing a polymerizable composition into the cavity (40) through an instrument (50), retracting said instrument and polymerizing the polymerizable composition to form a lens.

    45.
    发明专利
    未知

    公开(公告)号:AT427486T

    公开(公告)日:2009-04-15

    申请号:AT04790964

    申请日:2004-10-27

    Applicant: ESSILOR INT

    Abstract: A method for molding a lens, comprising: providing a vertically-oriented molding cavity (40) having a top (30) and a bottom (32) and being defined by at least (a) a first mold piece (14) having a concave surface, (b) a second mold piece (12) having a convex surface, and (c) a closure member (16) disposed around and attached to the first and second mold pieces, a sealing material (18) having self-sealing properties being connected to the closure member (16) and positioned near the bottom (32); puncturing the sealing material (18) and the closure member (16) near the bottom (32), thereby creating an opening in the sealing material (18) having a size that reduces after the instrument (50) is retracted; introducing a polymerizable composition into the cavity (40) through an instrument (50), retracting said instrument and polymerizing the polymerizable composition to form a lens.

    47.
    发明专利
    未知

    公开(公告)号:DE60215970D1

    公开(公告)日:2006-12-21

    申请号:DE60215970

    申请日:2002-11-04

    Applicant: ESSILOR INT

    Abstract: A method of fast curing polythiourethane transparent casted substrate, usable for making optical articles such as ophthalmic lenses, which comprises the steps of: 1) Providing a first component A comprising a polythiourethane prepolymer having isocyanate or isothiocyanate end groups and a viscosity at 25° C. ranging from 0.02 to 0.4 Pa.s; 2) Providing a second component B comprising a polythiourethane prepolymer having thiol (SH) end groups and a viscosity at 25° C. ranging from 0.2 to 2.0 Pa.s; 3) Mixing together first and second components A and B and filling a moulding cavity of a casting mould assembly with the resulting mixture; 4) Curing said mixture to obtain a transparent solid substrate, said curing step comprising: a) a first step for polymerizing said mixture to obtain a gel within 1 to 10 minutes; and b) a second step of post-curing the gel to obtain the transparent solid substrate; and 5) Recovering the transparent solid substrate from the mould.

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