发明申请
WO2018151964A9 SECURITY ARTICLES COMPRISING GROUPS OF MICROSTRUCTURES MADE BY END MILLING
审中-公开
基本信息:
- 专利标题： SECURITY ARTICLES COMPRISING GROUPS OF MICROSTRUCTURES MADE BY END MILLING
- 申请号：PCT/US2018/016851 申请日：2018-02-05
- 公开(公告)号：WO2018151964A9 公开(公告)日：2018-08-23
- 发明人： SEWALL, Nelson D. , GRINDE, Christopher S.
- 申请人： 3M INNOVATIVE PROPERTIES COMPANY
- 申请人地址： 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427 US
- 专利权人： 3M INNOVATIVE PROPERTIES COMPANY
- 当前专利权人： 3M INNOVATIVE PROPERTIES COMPANY
- 当前专利权人地址： 3M Center Post Office Box 33427 Saint Paul, Minnesota 55133-3427 US
- 代理机构： ADAMSON, Trisha D. et al.
- 优先权： US62/458,812 20170214; US62/515,993 20170606; US62/527,511 20170630
- 主分类号： G02B5/124
- IPC分类号： G02B5/124
摘要：
The present disclosure relates to end milling methods for making microstructures, a tool comprising such microstructures, the microstructures, and replications thereof, where the microstructures are part of a structured surface configured as a security article. Some of the microstructures are configured differently from others to define an optically detectable indicia in the structured surface. Microstructures in a first group may for example differ from microstructures in a second group in terms of one or more of size, orientation, cube corner type, and dihedral angle value(s), to define the indicia or a portion thereof. The microstructures may comprise full or truncated cube corner elements, and the article may be a retroreflective sheeting.
公开/授权文献:
IPC结构图谱:
| G | 物理 |
| --G02 | 光学 |
| ----G02B | 光学元件、系统或仪器 |
| ------G02B5/00 | 除透镜外的光学元件 |
| --------G02B5/04 | .棱镜 |
| ----------G02B5/122 | ..立体角、三边或三面反射型 |
| ------------G02B5/124 | ...形成单个板状或片状部分的多个反射元件 |