| 发明名称 |
Optical Multilayer |
| 摘要 |
An optical multilayer (1) comprising textured surfaces suitable for use in anti-counterfeiting and/or security applications is described. The optical multilayer (1) comprises at least two textured layers, said layers having different refractive indices, wherein each of the |
| 申请公布号 |
US2015035269(A1) |
申请公布日期 |
2015.02.05 |
| 申请号 |
US201314380123 |
申请日期 |
2013.02.07 |
| 申请人 |
QINETIQ LIMITED |
发明人 |
Hooper Ian Richard;Lawrence Christopher Robert;Sambles John Roy;Treen Andrew Shaun |
| 分类号 |
B42D25/328;G02B27/42;G07D7/12 |
主分类号 |
B42D25/328 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical multilayer comprising at least two textured layers, said layers having different refractive indices, wherein each of the textured layers comprise at least one first region, said first region comprising optical microstructures of constant periodicity, and each of the textured layers comprise at least one second region, said second region comprising optical microstructures which are disordered. |
| 地址 |
Farnborough, Hampshire GB |
