发明名称 |
Cube-corner retroreflective articles having tailored divergence profiles |
摘要 |
Cube-corner retroreflective article having improved divergence profiles. The three lateral reflecting faces of the cube-corner retroreflective elements are formed by three intersecting sets of parallel V-shaped grooves, and at least one of the sets includes, in a repeating pattern, at least two groove side angles that differ from one another. Thereby the array of cube-corner retroreflective elements is divided into repeating sub-arrays that each comprise a plurality of cube-corner retroreflective elements in a plurality of distinctive shapes that retroreflect incident light in distinctively shaped light patterns.
|
申请公布号 |
US4775219(A) |
申请公布日期 |
1988.10.04 |
申请号 |
US19860933470 |
申请日期 |
1986.11.21 |
申请人 |
MINNESOTA MINING & MANUFACTURING COMPANY |
发明人 |
APPELDORN, ROGER H.;NELSON, JOHN C.;GARDINER, MARK E.;HOOPMAN, TIMOTHY L. |
分类号 |
G02B5/124;(IPC1-7):G02B5/124;G02B5/122;G02B5/136 |
主分类号 |
G02B5/124 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|