发明名称 |
OPTICAL AUTHENTICATION COMPONENT AND METHOD OF FABRICATING SAID COMPONENT |
摘要 |
According to one aspect, the invention relates to an optical authentication component visible in reflection comprising an etched structure (23) on a support (20) of index n0, a thin layer (60) of a dielectric material of optical index ni different from n0 deposited on said structure (23), a layer (50) of a material of index n2 close to n0 encapsulating the structure (23) coated with the thin layer (60). The structure (23) exhibits a first pattern (22) modulated by a second pattern, the first pattern (22) being a bas-relief comprising a set of facets (24) whose shapes are determined so as to simulate a relief image of a relief object (10), and the second pattern (26) being a periodic grating determined so as to modulate the first pattern (22) in order to produce, after deposition of the thin layer (60) and encapsulation of said structure (23), a first colour according to a first orientation of observation and a second different colour according to a second orientation of observation obtained by an azimuthal rotation of the component. |
申请公布号 |
WO2011138394(A1) |
申请公布日期 |
2011.11.10 |
申请号 |
WO2011EP57204 |
申请日期 |
2011.05.05 |
申请人 |
HOLOGRAM. INDUSTRIES;NOIZET, ALEXANDRE;PETITON, VALERY |
发明人 |
NOIZET, ALEXANDRE;PETITON, VALERY |
分类号 |
G02B5/18;B42D15/00;B42D15/10;G06K19/16;G07D7/12 |
主分类号 |
G02B5/18 |
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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