| 摘要 |
Retroreflective sheeting ( 10 ) comprising a retroreflecting layer ( 12 ), which has an array of retroreflective elements ( 34 ) formed thereon, and a divergence-enhancing layer ( 14 ) which is positioned in front of the retroreflecting layer ( 12 ). The divergence-enhancing layer ( 14 ) has localized aberration regions ( 42 ) which change the divergence of light traveling therethrough. The placement of the localized aberration regions ( 42 ) relative to the retroreflective elements ( 34 ) broadens the divergence range of the sheeting ( 10 ).
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