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    VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON HOLOGRAMMEN MIT REGIONEN UNTERSCHIEDLICHER STREUCHARAKTERISTIK UND VERIFIKATIONSVERFAHREN UND -VORRICHTUNG
    4.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON HOLOGRAMMEN MIT REGIONEN UNTERSCHIEDLICHER STREUCHARAKTERISTIK UND VERIFIKATIONSVERFAHREN UND -VORRICHTUNG 审中-公开
    方法和设备用于生产具有不同全息图流行特点和验证过程和设备地区

    公开(公告)号：EP2208118A2

    公开(公告)日：2010-07-21

    申请号：EP08845505.0

    申请日：2008-10-31

    申请人： Bundesdruckerei GmbH

    发明人： LEOPOLD, André

    IPC分类号： G03H1/20 ,  G03H1/22 ,  G06K19/16 ,  G07D7/12

    CPC分类号： G03H1/22 ,  B42D25/328 ,  G03H1/0011 ,  G03H1/0236 ,  G03H1/0256 ,  G03H1/202 ,  G03H1/265 ,  G03H2001/0016 ,  G03H2001/205 ,  G03H2001/2223 ,  G03H2001/2244 ,  G03H2210/11 ,  G03H2210/54 ,  G03H2222/24 ,  G03H2223/12 ,  G03H2225/11 ,  G03H2225/12 ,  G03H2225/31 ,  G07D7/0032

    摘要： The invention relates to a method and to a device for producing a hologram as a security feature, a hologram and a security document provided with said type of hologram. The invention also relates to a method and to a device for verifying a hologram or a security document provided with said type of hologram. The invention further relates to a hologram having a watermark-type structure that reflects and/or deflects incident light at a reconstruction incident angle during the reconstruction at a reconstruction incident angle. Said hologram comprises at least two regions that reflects, at various large angular ranges, about the reconstruction incident angle, incident light in correspondingly different large angular ranges about the reconstuction incident angle.

    摘要翻译： 本发明涉及一种方法和一种装置（1），用于制造全息图（45，45”，51）作为安全特征，一个全息图（45，45' ，51）和设置有所述类型的全息图的一安全文件 （45，45”，51）。 因此本发明涉及一种方法和用于验证的全息图（51）或设置有所述型全息图（51）的安全文件（52）的装置（50）。 本发明还涉及到具有水印型结构的全息图（45，45”，51）做了反射和/或在重建入射角重建期间在重建入射角偏转入射光。 所述全息图（45，45”，51）包括至少两个区域（46,46' ，46”，46””，47,47' ）做了反映，在各种大的角度范围，约重建入射角，入射光 在有关之重构入射角相应不同的大角度范围。

    A RADIATION CONDITIONING SYSTEM
    6.
    发明公开
    A RADIATION CONDITIONING SYSTEM 审中-公开
    放射治疗系统，

    公开(公告)号：EP1554623A2

    公开(公告)日：2005-07-20

    申请号：EP02797485.6

    申请日：2002-12-19

    申请人： ACTUALITY SYSTEMS, INC.

    发明人： FAVALORA, Gregg, E. ,  NAPOLI, Joshua ,  OLIVER, David-Henry

    IPC分类号： G02B26/10

    CPC分类号： G02B26/106 ,  G02B5/32 ,  G02B27/2214 ,  G03H1/268 ,  G03H2001/2292 ,  G03H2210/454 ,  G03H2225/31 ,  H04N13/302

    摘要： A holographic imaging system and method includes a radiation source for generating radiation. A data base has a set of elements, each element is indicative of a trajectory of a light ray exiting a point in a recorded scene. A spatial light modulator is receptive of the radiation from the radiation source and the elements of the data base mapped to the spatial light modulator, thereby projecting from the spatial light modulator an optical signal in the nature of a two dimensional bitmap of the recorded scene. A diffractive optical element includes a set of basis fringes receptive of the projected optical signal from the spatial light modulator for diffracting the optical signal in a specified direction. A multiplexer is receptive of the elements of the data base for multiplexing the elements of the data base to the spatial light modulator. A timing device synchronizes multiplexing the elements of the data base to the spatial light modulator and diffracting the optical signal in a specified direction.

    Copying holograms
    7.
    发明公开
    Copying holograms 失效
    复制全息图

    公开(公告)号：EP0375185A3

    公开(公告)日：1992-03-11

    申请号：EP89312515.3

    申请日：1989-11-30

    申请人： ILFORD Limited

    发明人： Doyle, James ,  Hopwood, Antony Ian

    IPC分类号： G03H1/20 ,  G02F1/00

    CPC分类号： G03H1/20 ,  G03H1/0465 ,  G03H2001/207 ,  G03H2222/35 ,  G03H2223/12 ,  G03H2225/31 ,  G03H2270/23

    摘要： There is described a method of preparing a copy hologram from a master hologram which is characterised in that the light employed in the copying process is modified by passing at least one exposing beam through a light modulating array (28), some members at least of said array having had their light transmissivities modified in accordance with information derived from a reconstruction of the master hologram. One useful method of modifying the light transmissivities of the light modulating array members in accordance with information derived from a reconstruction of the master hologram is to reconstruct the master hologram and then prepare video signals representative of this image by use of a video camera placed along the axis to be used for viewing the holographic copies, digitising the video signals and storing them and then using the stored signals to modify the elements of the light modulating array.

    摘要翻译： 描述了一种从主全息图制备复制全息图的方法，其特征在于，通过使至少一个曝光光束通过光调制阵列（28）来修改在复制过程中使用的光，至少一些成员 根据从主全息图的重建得到的信息修改了其透光率。 根据从主全息图的重建获得的信息来修改光调制阵列构件的光透射率的一种有用的方法是重建主全息图，然后通过使用沿着图像放置的视频相机准备表示该图像的视频信号 轴用于观看全息拷贝，数字化视频信号并存储它们，然后使用存储的信号来修改光调制阵列的元件。