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    • 1. 发明授权
    • Rulable multi-directional prism cluster retroreflective sheeting
    • 统治多方位棱镜簇逆反射片
    • US08783880B2
    • 2014-07-22
    • US13286505
    • 2011-11-01
    • Steven R. ChapmanFeng WuEthelbert Galicia
    • Steven R. ChapmanFeng WuEthelbert Galicia
    • G02B5/124
    • G02B5/124
    • A rotationally insensitive, retroreflective prismatic sheeting and method of manufacture is provided. The sheeting includes discrete clusters of cube corners that are separated from one another on all sides by a textured surface. Each of the cube corners in each cluster has a base edge that is not collinear or parallel with the base edges of cube corners on either side of it. The array of cube corners clusters is rulable, and the cube corners have different orientations. Four or more of the cube corners in each cluster may have edges that converge into a central point within the cluster, and the cube corners of the clusters may include at least two symmetrical pairs of cube corners. The shapes of the cube corner clusters may be polygonal, and all of the cube corners may share a common vertex located at the center of the polygonal shape.
    • 提供了一种旋转不敏感的回射棱镜片及其制造方法。 片材包括立方体角的离散簇,它们通过纹理表面在所有侧面上彼此分开。 每个群集中的每个立方角都有一个基本边不与其两边的立方角拐角的基本边线共线或平行。 立方角集群的数组是统一的,立方角有不同的方向。 每个簇中的四个或更多个立方角可以具有会聚到簇内的中心点的边缘,并且簇的立方角可以包括至少两个对称的立方角对。 立体角集束的形状可以是多边形,并且所有立方角都可以共享位于多边形形状的中心处的公共顶点。