发明名称 |
Optical films for creating unique optical effects |
摘要 |
An optical layer comprises a sheet of material having a surface. The surface comprises a plurality of optical elements. The optical elements are comprised of microscopic patterns in the surface that cooperate to produce an image. Each of the elements has a focal length. At least some of the focal lengths are significantly different from other focal lengths, such that some portions of the surface appear to be closer to a viewer than other portions of the surface.
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申请公布号 |
US2004196516(A1) |
申请公布日期 |
2004.10.07 |
申请号 |
US20040805850 |
申请日期 |
2004.03.22 |
申请人 |
PETERSEN JOEL M.;RICH CHRISTOPHER CHAPMAN |
发明人 |
PETERSEN JOEL M.;RICH CHRISTOPHER CHAPMAN |
分类号 |
B29C35/08;B29C59/04;B29D11/00;B44F1/04;B44F7/00;G02B3/00;G02B3/08;G02B5/32;G02B27/22;(IPC1-7):G02B5/32;G02B6/36;B42D15/00 |
主分类号 |
B29C35/08 |
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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