发明名称 |
Methods of forming retroflective structures having a helical geometry |
摘要 |
Retroreflective structures and methods of forming the same comprise a body of material extending along a helical path about a longitudinal axis and a plurality of retroreflective optical elements positioned along the helical path of the body of material, and constructed and arranged to retroreflect electromagnetic energy directed from a range of angular orientations about the longitudinal axis.
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申请公布号 |
US8157391(B1) |
申请公布日期 |
2012.04.17 |
申请号 |
US201113228955 |
申请日期 |
2011.09.09 |
申请人 |
NILSEN ROBERT B.;NILSEN GARRETT L.;TECHNOLOGY SOLUTIONS & INVENTION LLC |
发明人 |
NILSEN ROBERT B.;NILSEN GARRETT L. |
分类号 |
G02B5/122 |
主分类号 |
G02B5/122 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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