发明名称 |
TRIANGULAR PYRAMIDAL CUBE CORNER RETROREFLECTION SHEET |
摘要 |
To improve the high-brightness characteristic and wide angularities such as observation angularity, entrance angularity, and rotation angularity. A triangular-pyramidal cube-corner retroreflective sheeting characterized in that a lateral face (prism face) (face c) using a base edge (x) of triangular-pyramidal reflective elements faced each other and arranged in the closest-packed state by sharing the base edge (x) on a base plane (X-X') as one side is hexagonal or triangular, two other faces (faces a and b) sharing one ridge line starting with an apex (H) of the triangular-pyramidal reflective elements is quadrangular and when assuming the height from the apex (H) up to the base plane (X-X') as (h) and the height up to a substantially horizontal plane (Z-Z') including base edges (z and w) of other two faces (faces a and b) as (h0), and the angle formed between the optical axis of the triangular-pyramidal reflective elements and a plane (Y-Y') including the base edge (x) and vertical to the base plane (X-X') as (&thetas;), h and h0 are not substantially equal to each other but h / h0 and &thetas; meet a specific relational expression. <IMAGE>
|
申请公布号 |
EP1081511(A1) |
申请公布日期 |
2001.03.07 |
申请号 |
EP19990917079 |
申请日期 |
1999.04.21 |
申请人 |
NIPPON CARBIDE KOGYO KABUSHIKI KAISHA |
发明人 |
MIMURA, IKUO;ADACHI, KEIJI |
分类号 |
E01F9/00;E01F9/015;E01F9/03;G02B5/124;G09F13/16;(IPC1-7):G02B5/124 |
主分类号 |
E01F9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|