发明名称 |
TILED RETROREFLECTIVE SHEETING COMPOSED OF HIGHLY CANTED CUBE CORNER ELEMENTS |
摘要 |
A retroreflective sheeting includes a first array of cube corner element opposing pairs and a second array of cube corner element opposing pairs. The symmetry axes of the cube corner elements in the first and second arrays are tilted in a backward direction at an angle of about 12 DEG to about 30 DEG from an axis normal to a base surface. The second array of cube corner elements is oriented approximately perpendicular to the first array to yield a retroreflective article providing generally uniform total light return about a 360 DEG range of orientation angles and/or a minimum total light return of about 5 % across such 360 DEG range. Also disclosed is a mold assembly suitable for use in forming the present retroreflective sheeting and a method of making a retroreflective article using the mold.
|
申请公布号 |
WO9901786(A1) |
申请公布日期 |
1999.01.14 |
申请号 |
WO1997US21448 |
申请日期 |
1997.11.24 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
SMITH, KENNETH, L.;BENSON, GERALD, M. |
分类号 |
G02B5/124;(IPC1-7):G02B5/124 |
主分类号 |
G02B5/124 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|