发明名称 |
Genuineness detecting system and method for using genuineness detecting film |
摘要 |
An authenticity identifying film (10) has a reflective film (11) having a circularly polarized light selectivity to reflect at least only either of right-handed circularly polarized light and left-handed circularly polarized light of incident light to produce reflected light. The reflective film (11) is provided with a hologram forming part (11a). The hologram forming part (11a) reflects circularly polarized light of the same circular polarization as that of the reflected light in a direction different from that of the reflected light to form a holographic image. The reflected light reflected by the reflective film (11) and the holographic image formed by the hologram forming part (11a) are detected by detectors disposed at different positions, respectively.
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申请公布号 |
US6628439(B2) |
申请公布日期 |
2003.09.30 |
申请号 |
US20000530238 |
申请日期 |
2000.04.27 |
申请人 |
NIPPON MITSUBISHI OIL CORPORATION;NHK SPRING LTD.;DAI NIPPON PRINTING CO., LTD. |
发明人 |
SHIOZAWA AKIHITO;SUZUKI SHINICHIRO;NISHIMURA SUZUSHI;HOSHINO HIDEKAZU;TAKEUCHI ITSUO;SAKAKIBARA MIKIHIKO;YOKOYAMA MASUMI |
分类号 |
B42D15/10;B44F1/12;G03H1/02;G03H1/18;G07D7/12;(IPC1-7):G03H1/00;G02B5/18;B42D15/00;G06K9/74 |
主分类号 |
B42D15/10 |
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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