发明名称 |
METHODS OF MANUFACTURING SECURITY DOCUMENTS AND SECURITY DEVICES |
摘要 |
A method of making a security device is disclosed, comprising: (a) forming an array of focussing elements on at least a first region of a focussing element support layer, by: (a)(i) applying a first transparent curable material either to the focussing element support layer or to a casting tool carrying a surface relief corresponding to the focussing elements, over an first sub-region of the first region and applying a second transparent curable material to a second sub-region of the first region laterally offset from the first sub-region, the first and second transparent curable materials having different optical detection characteristics from one another; (a)(ii) forming the first and second transparent curable materials with the casting tool; and (a)(iii) curing the first and second transparent curable materials in the first region, so as to retain the surface relief. |
申请公布号 |
WO2017009617(A1) |
申请公布日期 |
2017.01.19 |
申请号 |
WO2016GB52082 |
申请日期 |
2016.07.11 |
申请人 |
DE LA RUE INTERNATIONAL LIMITED |
发明人 |
HOLMES, Brian William;GODFREY, John |
分类号 |
B42D25/324;B42D25/342;B42D25/351;B42D25/378;B42D25/425;B42D25/45 |
主分类号 |
B42D25/324 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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