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    METHOD AND DEVICE FOR COMPUTING COMPUTER-GENERATED VIDEO HOLOGRAMS
    2.
    发明授权
    METHOD AND DEVICE FOR COMPUTING COMPUTER-GENERATED VIDEO HOLOGRAMS 有权
    VERFAHREN UND VORRICHTUNG ZUR BERECHNUNG COMPUTERERZEUGTER VIDEO-HOLOGRAMME

    公开(公告)号：EP1800192B1

    公开(公告)日：2009-08-12

    申请号：EP05819368.1

    申请日：2005-12-22

    申请人： SeeReal Technologies GmbH

    发明人： SCHWERDTNER, Armin

    IPC分类号： G03H1/08 ,  G03H1/22

    CPC分类号： G03H1/0808 ,  G03H1/0005 ,  G03H1/22 ,  G03H1/2294 ,  G03H1/268 ,  G03H1/32 ,  G03H2001/0088 ,  G03H2001/0816 ,  G03H2001/0858 ,  G03H2001/2236 ,  G03H2001/2242 ,  G03H2001/2263 ,  G03H2001/2271 ,  G03H2001/269 ,  G03H2001/303 ,  G03H2210/30 ,  G03H2210/33 ,  G03H2210/454 ,  G03H2222/34 ,  G03H2223/16 ,  G03H2225/35 ,  G03H2226/02 ,  G03H2226/05

    摘要： A method of computing a hologram by determining the wavefronts at the approximate observer eye (OE) position that would be generated by a real version of an object to be reconstructed. In normal computer generated holograms, one determines the wavefronts needed to reconstruct an object; this is not done directly in the present invention. Instead, one determines the wavefronts at an observer window (OW) that would be generated by a real object located at the same position of the reconstructed object (3D-S). One can then back-transform these wavefronts to the hologram to determine how the hologram needs to be encoded to generate these wavefronts. A suitably encoded hologram (HA) can then generate a reconstruction of the three-dimensional scene (3D-S) that can be observed by placing one's eyes at the plane (OP) of the observer window (OW) and looking through the observer window (OW).

    摘要翻译： 通过确定将由要重建的对象的真实版本产生的近似观察者眼（OE）位置处的波前来计算全息图的方法。 在正常计算机生成的全息图中，确定重建物体所需的波前; 这不是直接在本发明中完成的。 相反，一个确定将由位于重建对象（3D-S）的相同位置处的真实对象生成的观察者窗口（OW）的波前。 然后可以将这些波前反向变换为全息图，以确定如何对全息图进行编码以产生这些波前。 然后，适当地编码的全息图（HA）可以生成可以通过将观察者的眼睛放在观察者窗口（OW）的平面（OP）上并通过观察窗观察来观察的三维场景（3D-S）的重建 （OW）。

    DIGITAL HOLOGRAPHY DEVICE AND PHASE PLATE ARRAY
    8.
    发明公开
    DIGITAL HOLOGRAPHY DEVICE AND PHASE PLATE ARRAY 有权
    数字 - 霍尔弗吉尼亚·圣彼得堡

    公开(公告)号：EP2224291A1

    公开(公告)日：2010-09-01

    申请号：EP08851644.8

    申请日：2008-11-21

    申请人： National University Corporation Kyoto Institute of Technology

    发明人： AWATSUJI, Yasuhiro ,  KANEKO, Atsushi ,  KOYAMA, Takamasa ,  TAHARA, Tatsuki ,  WAKAMATSU, Takeshi

    IPC分类号： G03H1/22

    CPC分类号： G03H1/0866 ,  G03H1/041 ,  G03H1/0443 ,  G03H1/12 ,  G03H2001/0447 ,  G03H2001/0458 ,  G03H2001/0469 ,  G03H2001/0471 ,  G03H2001/0875 ,  G03H2001/303 ,  G03H2222/34 ,  G03H2222/42 ,  G03H2222/45 ,  G03H2223/13 ,  G03H2223/15 ,  G03H2223/19 ,  G03H2225/35

    摘要： DIGITAL HOLOGRAPHY DEVICE AND PHASE PLATE ARRAY
    Provided is a digital holography device (1) having a simple configuration and an improved image quality, including: a light source (4) that emits light, the light source being provided for supply of object light beams formed by radiation, transmission, scattering, reflection, or diffraction of the emitted light from a subject (6); an array device (2) that splits the light emitted from the light source (4) into two kinds of reference light beams having different phases in a plane perpendicular to a direction in which the light emitted from the light source (4) travels; a CCD camera (3) having an image-capturing plane (13) on which two kinds of interference fringe patterns are recorded, the interference fringe patterns being formed by interferences between the two kinds of reference light beams, which have been produced by the array device (2), and the object light beams, which have been formed by radiation, transmission, scattering, reflection, or diffraction from the subject (6); and an image reconstruction device that generates a reconstructed image of the subject (6) from the two kinds of interference fringe patterns recorded on the image-capturing plane (13).

    摘要翻译： 数字全息设备和相位板阵列提供了一种数字全息设备（1），其具有简单的配置和改进的图像质量，包括：发光的光源（4），光源被设置用于提供形成的物体光束 通过来自被摄体（6）的发射光的辐射，透射，散射，反射或衍射; 阵列装置（2），其将从所述光源（4）发射的光分离成与从所述光源（4）发射的光的行进方向垂直的平面中具有不同相位的两种参考光束; 具有摄像面（13）的CCD摄像机（3），其上记录有两种干涉条纹图案，干涉条纹图案是由阵列产生的两种参考光束之间的干涉形成的 装置（2）和已经通过来自被摄体（6）的辐射，透射，散射，反射或衍射形成的物体光束; 以及图像重建装置，其从记录在图像拍摄平面（13）上的两种干涉条纹图案生成对象（6）的重建图像。

    VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN FARBIGER INDIVIDUALISIERTE HOLOGRAMME
    9.
    发明公开
    VERFAHREN UND VORRICHTUNG ZUM HERSTELLEN FARBIGER INDIVIDUALISIERTE HOLOGRAMME 有权
    一种产生彩色的方法和设备个性化的全息图

    公开(公告)号：EP2201427A1

    公开(公告)日：2010-06-30

    申请号：EP08785848.6

    申请日：2008-09-03

    申请人： Bundesdruckerei GmbH

    发明人： LEOPOLD, André ,  KUNATH, Christian ,  EHREKE, Jens ,  HOCHENBLEICHER, Gerhard ,  KLEPZIG, Christian ,  LANGGASSNER, Michael

    IPC分类号： G03H1/20 ,  G03H1/26 ,  B24D15/10

    CPC分类号： G03H1/04 ,  G03H1/0011 ,  G03H1/202 ,  G03H2001/205 ,  G03H2001/2268 ,  G03H2001/2271 ,  G03H2210/54 ,  G03H2222/18 ,  G03H2222/34 ,  G03H2222/36 ,  G03H2225/35 ,  G03H2225/61

    摘要： The invention relates to a method for producing colored individualized holograms that are especially used as security elements for security documents and/or valuable documents, and to a device for producing individualized holograms. The method according to the invention is characterized by generating light of a plurality of different colors, spatially modulating the light, color by color, in an individual manner, optically guiding the modulated light in such a manner that the light is at least partially refracted and/or reflected on a holographic master (33) and is superposed in a holographic recording material (31) with the modulated non-refracted and/or reflected light, and recording the multicolor individualized hologram, the light being modulated, color by color and at the same time, by means of a plurality of spatial light modulators (13-15). Every color of the plurality of colors is associated with its own spatial light modulator and the plurality of monochrome modulated light beams (6''-8'') of the plurality of colors is combined in a collinear manner prior to refraction and/or reflection on the holographic master (33) and the superposition in the holographic recording material (31) to give a multicolor exposure light beam (20) that is individually modulated, color by color, exactly one of the plurality of colors being associated with every pixel of the individual hologram.