发明名称 |
RUECKSTRAHLENDES BOGENMATERIAL |
摘要 |
Retroreflective film, sheeting or the like having an array of light-reflecting right triangle prisms between a transparent surface layer and a backing layer. The opposing triangular end faces of adjacent prisms are spaced apart to provide internal reflection therefrom. The retroreflective material provides efficient retroreflection at angles of incidence of about 30 DEG -85 DEG and therefore is effective where light is directed in a path nearly parallel to a reflective surface, such as highway lane dividers or guardrail markers placed parallel to a highway. Retroreflective material on such markers becomes visible to an observer while yet remote from the markers. |
申请公布号 |
ATA857077(A) |
申请公布日期 |
1981.11.15 |
申请号 |
AT19770008570 |
申请日期 |
1977.11.30 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY;NTER |
发明人 |
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分类号 |
G09F13/16;E01F9/00;E01F9/03;E01F9/04;E01F9/08;G02B5/12;G02B5/124 |
主分类号 |
G09F13/16 |
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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