- 专利标题: Method for producing a hologram, and security element and a security document
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申请号: US16644832申请日: 2018-09-05
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公开(公告)号: US11679616B2公开(公告)日: 2023-06-20
- 发明人: Sebastian Mader , Harald Walter , Corrado Fraschina
- 申请人: OVD Kinegram AG
- 申请人地址: CH Zug
- 专利权人: OVD Kinegram AG
- 当前专利权人: OVD Kinegram AG
- 当前专利权人地址: CH Zug
- 代理机构: Hoffmann & Baron, LLP
- 优先权: DE 2017120536.5 2017.09.06
- 国际申请: PCT/EP2018/073904 2018.09.05
- 国际公布: WO2019/048499A 2019.03.14
- 进入国家日期: 2020-03-05
- 主分类号: G06T17/10
- IPC分类号: G06T17/10 ; G06T15/50 ; B42D25/328 ; B42D25/324
摘要:
A method for producing a hologram (1), (1) for security elements (1a) and/or security documents (1b). One or more virtual hologram planes (10) are arranged in front of and/or behind one or more virtual models (20) and/or one or more virtual hologram planes (10) are arranged such that they intersect one or more virtual models (20). One or more virtual light sources (30) are arranged on one or more partial regions of the surface (21) of one or more of the virtual models (20). One or more virtual electromagnetic fields (40) are calculated starting from at least one of the virtual light sources (30) in one or more zones (11) of the one or more virtual hologram planes (10). In the one or more zones (11), in each case, a virtual total electromagnetic field (41) is calculated on the basis of the sum of two or more, of the virtual electromagnetic fields (40) in the respective zone (11). One or more phase images (50) are calculated from the virtual total electromagnetic fields (41) in the one or more zones (11). A height profile (60) of the hologram (1) is calculated from the one or more phase images (50) and the height profile (60) of the hologram (1) is incorporated into a substrate (2) to provide the hologram (1).
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