| 摘要 |
Cube-corner retroreflective article in which the cube-corner retroreflective elements are formed by three intersecting sets of parallel V-shaped grooves (11, 12, 13), at least one of the sets (13) including, in a repeating pattern, at least one groove side angle (132, 133, 134) that differs from another groove side angle (131) of the same set. By the described variation in groove side angle, 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. |
