发明名称 |
RETROREFLECTIVE SHEET AND EXTERNAL ILLUMINATION SYSTEM |
摘要 |
The retroreflective sheet of the present invention comprises a surface layer (1) including at least one layer, a focusing layer (2) containing glass spheres (3), and a metal reflective layer (4) on the back side of the focusing layer (2), wherein the glass spheres (3) are disposed at random locations in the thickness direction of the focusing layer (2). The external illumination system of the present invention comprises a sign having a sign face including the above-mentioned retroreflective sheet, and an external illumination source, and the distance from the illumination source to the sign face is within a range of at least 1 m and no more than 100 m. The present invention thereby provides a retroreflective sheet and an external illumination system with which wide-angle reflective performance with a wider incidence angle and observation angle can be ensured. |
申请公布号 |
EP1659425(B8) |
申请公布日期 |
2010.07.07 |
申请号 |
EP20050719796 |
申请日期 |
2005.03.02 |
申请人 |
KIWA CHEMICAL INDUSTRY CO., LTD. |
发明人 |
YUKAWA, SHIGEO;OKI, HIDEYUKI;URA, YOSHITAKA |
分类号 |
G02B5/128;B32B7/02;B32B15/04;B32B15/08;B32B27/18 |
主分类号 |
G02B5/128 |
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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