| 发明名称 |
LOW REFRACTIVE INDEX LAYER HAVING A PLURALITY OF VOIDS |
| 摘要 |
Retroreflective articles and constructions are disclosed. One exemplary retroreflective article or construction includes a retroreflective layer and a low refractive index layer. In one exemplary embodiment, the low refractive index layer is adjacent to at least a portion of a retroreflective structured major surface of the retroreflective layer. |
| 申请公布号 |
US2015346400(A1) |
申请公布日期 |
2015.12.03 |
| 申请号 |
US201514825497 |
申请日期 |
2015.08.13 |
| 申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
Patel Suman K.;Coggio William D.;Pekurovsky Mikhail L.;Smith Kenneth L.;Free Michael B.;Kolb William B. |
| 分类号 |
G02B5/124;G02B5/128 |
主分类号 |
G02B5/124 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A retroreflective article, comprising:
a retroreflective layer including a first major surface that is structured and an opposed second major surface; and a low refractive index material adjacent to at least a portion of the structured major surface, the low refractive index material including a plurality of voids, wherein at least a majority of the voids is not greater than ⅕ of the wavelength of visible light. |
| 地址 |
St. Paul MN US |
