发明名称 |
Zero-order diffractive pigments |
摘要 |
The present invention relates to pigments comprising or consisting of a layer made of a material with an index of refraction that is higher than the index of refraction of the adjacent material by at least 0.25; whereas said layer has a zero-order diffractive micro-structure; whereas said layer acts as an optical waveguide and whereas said layer has a thickness between 50 nm and 500 nm; to processes for its manufacture and to its use. These pigments show a color effect upon rotation and/or tilting, and it is believed that this color effect is based on zero-order diffraction.
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申请公布号 |
US7974010(B2) |
申请公布日期 |
2011.07.05 |
申请号 |
US20070301608 |
申请日期 |
2007.03.07 |
申请人 |
CSEM CENTRE SUISSE D'ELECTRIQUE ET DE MICROTECHNIQUE SA—RECHERCHE ET DEVELOPPEMENT |
发明人 |
WALTER HARALD;STUCK ALEXANDER |
分类号 |
G02B27/46 |
主分类号 |
G02B27/46 |
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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