| 摘要 |
<p>A glittering non-reflective sheeting (60) includes an array of cube-corner elements (30) that are arranged in the array such that the sheeting glitters when light is incident thereon. The glitter is in the form of many discrete points of light (68) that tend to blink off and on. The array may be configured such that a dihedral angle α varies between adjacent cube faces (31) of adjacent cube-corner elements (30) in each groove in one of the groove sets (45, 46, or 47) and such that the base planes (36) are not parallel to each other when the sheeting (60) is laid flat. Preferably, the dihedral angle α between faces (31) of adjacent cube-corner elements (30) varies in essentially all of the grooves such that the cube-corner elements are randomly tilted throughout the array. The glitter can make the sheeting very useful for aesthetic or decorative applications.</p> |
