发明名称 |
CUBE CORNER RETROREFLECTIVE ARTICLE |
摘要 |
[Object] An object to be solved by the invention is to improve a retroreflective characteristic of a quadrilateral element that is a cube-corner element, which has reflective lateral surfaces including two trapezoidal reflective lateral surfaces and one pentagonal or isosceles-triangular reflective lateral surface, and which has a projection shape of a quadrangle when projected onto a common plane and is particularly to provide a cube-corner retroreflective article provided with a quadrilateral element excellent in an entrance angle characteristic and a rotation angle characteristic. [Solving means] There is provided a cube-corner retroreflective article provided with a number of cube-corner retroreflective element pairs each formed by a pair of cube-corner retroreflective elements sharing one side, each of the cube-corner retroreflective elements having reflective lateral surfaces including two trapezoidal reflective lateral surfaces and one pentagonal or isosceles-triangular reflective lateral surface, and having a projection shape of a quadrangle when projected onto a common plane, wherein ratios (rHA/rHC and rHB/rHC) between a length (rHC) of a ridge (HC) shared by the trapezoidal reflective lateral surfaces (HAFC and HBGC) and lengths (rHA and rHB) of other ridges (HA and HB) are in a range of 0.5 to 1.5. |
申请公布号 |
EP2192426(A4) |
申请公布日期 |
2012.05.23 |
申请号 |
EP20080790488 |
申请日期 |
2008.08.22 |
申请人 |
NIPPON CARBIDE INDUSTRIES CO., INC. |
发明人 |
MIMURA, IKUO;HAYASHI, CHIHIRO;AMEMIYA, KEIJI |
分类号 |
G02B5/124;E01F9/619 |
主分类号 |
G02B5/124 |
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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