发明名称 |
Identification medium, identification method, and identification apparatus |
摘要 |
An identification medium is to be observed via a linearly polarizing filter and includes a first liquid crystal layer that changes the wavelength of light according to the rotational angle of the linearly polarizing filter, a cholesteric liquid crystal layer, and a light absorbing layer that is provided below the cholesteric liquid crystal layer.
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申请公布号 |
US8322753(B2) |
申请公布日期 |
2012.12.04 |
申请号 |
US20070312653 |
申请日期 |
2007.10.18 |
申请人 |
HOSHINO HIDEKAZU;TAKEUCHI ITSUO;SAKAUCHI TOKIO;NISHIMURA SUZUSHI;SUZAKI GOROU;NHK SPRING CO., LTD.;NIPPON OIL CORPORATION |
发明人 |
HOSHINO HIDEKAZU;TAKEUCHI ITSUO;SAKAUCHI TOKIO;NISHIMURA SUZUSHI;SUZAKI GOROU |
分类号 |
B42D15/00 |
主分类号 |
B42D15/00 |
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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