发明名称 Triangular-pyramidal cube-corner retroreflective article having curved reflective lateral face
摘要 To provide a retroreflective article formed of many triangular-pyramidal cube-corner retroreflective element pairs. One-side groove angle formed between a cross line between a plane vertical to the common plane and a V-groove vertical plane which includes the base line of a V-shaped groove and perpendicular to said the common plane, and a reflective lateral face, and the V-groove vertical plane does not form a constant angle in the reflective lateral face but the lateral face forms a curved and/or multiple surface. A base line constituting any directional V-shaped groove in retroreflective element pairs is a nonlinear base line which does not form a linear trajectory and the reflective lateral face formed of the V-shaped groove forms a curved and/or multiple surface.
申请公布号 US2007109641(A1) 申请公布日期 2007.05.17
申请号 US20040581490 申请日期 2004.12.02
申请人 NIPPON CARBIDE KOGYO KABUSHIKI KAISHA 发明人 MIMURA IKUO
分类号 G02B5/124;G02B5/122 主分类号 G02B5/124
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