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    • 10. 发明授权
    • Glittering cube-corner retroreflective sheeting
    • 闪闪发光的立方角回射片
    • US5840405A
    • 1998-11-24
    • US640326
    • 1996-04-30
    • Jeanine M. ShustaPaul E. MareckiMatthew R. AtkinsonCheryl M. FreyOlester Benson, Jr.
    • Jeanine M. ShustaPaul E. MareckiMatthew R. AtkinsonCheryl M. FreyOlester Benson, Jr.
    • G02B5/124
    • G02B5/124Y10T428/24479
    • A cube-corner retroreflective sheeting 60 includes an array of cube-corner elements 30 that are defined by three sets of intersecting parallel grooves 45, 46, 47. The cube-corner elements 30 are arranged in the array such that the sheeting 60 glitters when exposed to light. The glitter is in the form of many discreet points of light that tend to blink on and off when viewed by the naked eye. The array may be configured such that a dihedral angle .alpha. 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 base planes are not parallel to each other when the sheeting 60 is laid flat. Preferably, the dihedral angle .alpha. 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 sheeting glitters very well under daytime viewing conditions and also to some extent under nighttime or retroreflective conditions. The glittering effect can enhance the sheeting's conspicuity, and hence highlight a person's presence to give them improved safety and security.
    • 立体角回归反射片60包括由三组相交的平行凹槽45,46,47限定的立体角元件阵列30.立体角元件30被布置在阵列中,使得片材60闪烁时 曝光 闪光是以肉眼观察到的许多谨慎的光线,其倾向于眨眼开启和关闭。 阵列可以被配置为使得二面角α在凹槽组45,46或47中的一个中的每个凹槽中的相邻立体角元件30的相邻立方体表面31之间变化,并且使得基面不彼此平行 当片60平放时。 优选地,相邻立体角元件30的面31之间的二面角α在基本上所有的凹槽中变化,使得立体角元件在整个阵列中随机倾斜。 在白天观看条件下,还可以在一定程度上在夜间或回归条件下,片材闪烁。 闪闪发光的效果可以增强片材的显着性,从而突显出一个人的存在,使他们提高安全性和安全性。