11.
    发明专利
    未知

    公开(公告)号:FR2792073A1

    公开(公告)日:2000-10-13

    申请号:FR9904268

    申请日:1999-04-06

    Applicant: ESSILOR INT

    Abstract: The method comprises: a) placing in contact at least one principal surface of the colourless articles of the set with a solution of a fluorescent material for a sufficient time to allow penetration of the fluorescent material under the principal surface of the article; b) irradiation of the impregnated articles by means of radiation which activates the fluorescence of the fluorescent material; and c) selection of the articles in the set into two sub-sets of which the first is composed of those articles of the set which show a homogeneous fluorescence of their principal surfaces under irradiation and the second is composed of those articles of the set which show a non-homogeneous fluorescence of their principal surfaces under irradiation. Application: to opthalmic lenses.

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