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    12.
    发明专利
    未知

    公开(公告)号：DE69313997T2

    公开(公告)日：1998-02-19

    申请号：DE69313997

    申请日：1993-12-21

    Applicant: ESSILOR INT

    Inventor： KEITA GABRIEL ,  RENAUDINEAU JOEL

    IPC: G02C7/02 ,  B29C39/00 ,  B29D11/00 ,  B29K33/00 ,  B29L11/00 ,  C08F20/26 ,  C08F20/38 ,  C08F220/10 ,  C08F220/28 ,  C08F220/30 ,  C08F290/00 ,  C08F290/06 ,  G02B1/04

    Abstract: Polymer composition resulting from the polymerisation of a polymerisable composition comprising: - at least 50 % by weight of a monomer or of a mixture of monomers corresponding to the formula I in which R1 and R2, which are identical or different, denote hydrogen or C1-C6 alkyl; X denotes m + n is between 0 and 10 - 0 to 50 % by weight of one or a number of mono- or polyfunctional methacrylic, acrylic or vinyl comonomers (II) - from 0.5 to 15 % with respect to the weight of the components I + II of a compound of formula (III) in which R3 and R4 denote hydrogen or else one of the radicals R3 or R4 is a hydrogen atom whereas the other forms a ring with R7 and R5, R6 and R7 are hydrogen or alkyl which can be substituted by OH and/or interrupted.

    14.
    发明专利
    未知

    公开(公告)号：FR2703056B1

    公开(公告)日：1995-06-02

    申请号：FR9303537

    申请日：1993-03-26

    Applicant: ESSILOR INT

    Inventor： GARCIA RUBEN ,  KEITA GABRIEL ,  YEAN LEANIRITH

    IPC: C08F18/24 ,  C08F216/02 ,  C08F218/00 ,  G02B1/04 ,  C08F222/16 ,  B29D11/00

    Abstract: Polymer composition obtained by polymérization of a polymerizable composition comprising: at least 50 % by weight of a monomer or a mixture of monomers of formula (I) wherein X is formula (II) and R and R' are H or CH3; 0-50 % by weight of one or more allylic, vinyl, acrylic or methacrylic mono or poly functional comonomer(s) (II): 0.2-10 % based on the weight of components (I) + (II), of a compound of formula (III) wherein R4 and R5 are hydrogen or a radical, R4 or R5 is a hydrogen atom, while the other forms a C5 or C7-C10 ring with R2; R1, R2 and R3 are hydrogen, alkyl which can be substituted by OH and/or interruped by an ether, ester or ketone function.

    Eyeglass rating with respect to protection against uv hazard
    15.
    发明专利
    Eyeglass rating with respect to protection against uv hazard 未知

    公开(公告)号：NZ626532A

    公开(公告)日：2016-12-23

    申请号：NZ62653212

    申请日：2012-12-13

    Applicant: ESSILOR INT

    Inventor： CITEK KARL ,  BAILLET GILLES ,  DE AYGUAVIVES FRANCISCO ,  KEITA GABRIEL

    IPC: G01N21/33 ,  A61F9/02 ,  B07C5/342 ,  G01J1/42 ,  G01M11/02 ,  G02C7/10

    Abstract: Disclosed is a method of providing to a customer of an eyeglass (1) a rating of the eyeglass (1) with respect to protection provided by the eyeglass (1) against UV hazard taking into account reflections from the back face (1b) of the eyeglass (1). The rating is based on an index value, which quantifies a reduction in a total UV amount impinging onto an eye for a wearer of the eyeglass (1) with respect to UV exposure without the eyeglass (1). The method comprises the steps of: measuring UV intensity with a photometer for light (R) reflecting from a back face (1a) of the eyeglass (1); providing a value of UV transmission (T) for the eyeglass (1); providing a value of UV reflection (R) from a back face (1b) of the eyeglass; combining both values of the UV transmission (T) and the UV reflection (R) of the eyeglass (1) using an addition formula with non-zero positive factors respectively for the UV transmission (T) and UV reflection (R); calculating the index value from a non-zero base number divided by a result obtained in the combining step, the index value being based in part on measurements obtained in the measuring step and accounting for incident light that reaches an eye of the wearer from the back face (1b) of the eyeglass; and providing to a customer the rating for the eyeglass (1).

    18.
    发明专利
    未知

    公开(公告)号：DE60206092T2

    公开(公告)日：2006-06-29

    申请号：DE60206092

    申请日：2002-03-20

    Applicant: ESSILOR INT

    Inventor： BORYSLAWSKI JOSEPH ,  KEITA GABRIEL ,  TURSHANI YASSIN YUSEF

    IPC: B29D11/00 ,  G02C7/04 ,  A61F2/16 ,  B29C31/04 ,  B29C39/00 ,  B29C39/02 ,  B29C39/24 ,  B29L11/00 ,  G02B3/00

    Abstract: A method for molding a plastic ophthalmic lens which comprises introducing a liquid polymerizable composition in a molding cavity of a two-piece mold through a filling nozzle in flow communication with the upper half of the molding cavity and spaced apart from the central vertical axis of the molding cavity up to the time the lower half of the molding cavity is filled. Then, tilting the mold to bring the filling in register with the central axis of the molding cavity and achieving full filling of the molding cavity. Thereafter, polymerizing the composition and recovering the lens.

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