发明公开
- 专利标题: OPTISCH VARIABLES ELEMENT
- 专利标题(英): Optically variable element
- 专利标题(中): 可变光元
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申请号: EP14722193.1申请日: 2014-05-06
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公开(公告)号: EP2999597A1公开(公告)日: 2016-03-30
- 发明人: BREHM, Ludwig , MADER, Sebastian , SCHILLING, Andreas , TOMPKIN, Wayne Robert , WALTER, Harald
- 申请人: Leonhard Kurz GmbH & Co. KG , OVD Kinegram AG
- 申请人地址: Schwabacher Strasse 482 90763 Fürth DE
- 专利权人: Leonhard Kurz GmbH & Co. KG,OVD Kinegram AG
- 当前专利权人: Leonhard Kurz GmbH & Co. KG,OVD Kinegram AG
- 当前专利权人地址: Schwabacher Strasse 482 90763 Fürth DE
- 代理机构: Louis Pöhlau Lohrentz
- 优先权: DE102013105246 20130522
- 国际公布: WO2014187665 20141127
- 主分类号: B42D15/00
- IPC分类号: B42D15/00 ; B42D25/00 ; G02B5/18 ; G02B27/44
摘要:
The invention relates to an optically variable element having first and second diffraction gratings, which are high-frequency diffraction gratings and thus are reflective into the zeroth order of diffraction. Either a first color is generated by the first diffraction grating and simultaneously a second color different from the first color is generated by the second diffraction grating at a certain angle of rotation and a certain illumination angle, or a visible color is generated substantially only by the first diffraction grating at a first angle of rotation and a visible color is generated substantially only by the second diffraction grating at a second angle of rotation.
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