发明名称 |
LIGHT DIRECTING FILMS AND METHODS OF MAKING SAME |
摘要 |
Light directing films have a surface comprising a plurality of microstructures with peaks extending along a length of the surface. Each microstructure includes a plurality of elevated portions and a plurality of non-elevated portions. A void diameter, D?c#191, of the largest circle that can be overlaid on the surface of the light directing film without including at least a portion of an elevated portion is less than about 0.5 mm. The light directing film cannot be divided into a plurality of same size and shape grid cells forming a continuous two-dimensional grid, where each of at least 90% of the grid cells comprise either a single leading edge of an elevated portion, or a portion of an elevated portion where the elevated portion has a length that is greater than the average length of the elevated portions. |
申请公布号 |
US2014335309(A1) |
申请公布日期 |
2014.11.13 |
申请号 |
US201314356645 |
申请日期 |
2013.01.25 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
Emmons Robert M.;Hung Bryan V.;Balts Corey D. |
分类号 |
G02B5/04 |
主分类号 |
G02B5/04 |
代理机构 |
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代理人 |
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主权项 |
1. A light directing film comprising:
a surface comprising a plurality of microstructures with peaks extending along a length of the surface, each microstructure comprising a plurality of elevated portions and a plurality of non-elevated portions, wherein a diameter, Dc, of a largest circle that can be overlaid on the surface without including at least a portion of an elevated portion is less than about 0.5 mm, and wherein the light directing film cannot be divided into a plurality of same size and shape grid cells forming a continuous two-dimensional grid, where each of at least 90% of the grid cells comprise either a single leading edge of an elevated portion, or a portion of an elevated portion where the elevated portion has a length that is greater than the average length of the elevated portions. |
地址 |
St. Paul MN US |