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1.发明公开Method and device for computing and displaying computer-generated video holograms 审中-公开用于计算和显示的计算机生成的视频全息图的方法和装置，
公开(公告)号：EP2290473A3
公开(公告)日：2014-11-26
申请号：EP10185013.9
申请日：2005-12-22
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).
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公开(公告)号：EP2138911A3
公开(公告)日：2011-10-26
申请号：EP09168975.2
申请日：2003-11-11
发明人： Schwerdtner, Armin
CPC分类号： G03H1/16 , G03H1/08 , G03H1/2286 , G03H1/2294 , G03H2001/0858 , G03H2001/2236 , G03H2001/2242 , G03H2001/2271 , G03H2210/30 , G03H2222/22 , G03H2222/34 , G03H2226/05
摘要： Die Erfindung betrifft eine Einrichtung zur Rekonstruktion einer dreidimensionalen Szene mit einem optischen System, enthaltend mindestens eine reelle oder virtuelle punkt- oder linienförmige, hinreichend kohärente Lichtquelle (1) und eine Linse (2), sowie mit einem steuerbaren Display (3) aus matrixförmig oder in anderer Weise regulär angeordneten Zellen mit mindestens einer in Amplitude und/oder Phase steuerbaren Öffnung je Zelle. In das steuerbare Display (3) ist ein Videohologramm kodierbar. Die Linse (2) erzeugt ein Bild der Lichtquelle (1) in einer Betrachterebene (4). In der Betrachterebene (4) ist ein Betrachterfenster (5) innerhalb einer Beugungsordnung des steuerbaren Displays (3) lokalisierbar. Durch das Betrachterfenster (5) hindurch ist die dreidimensionale Szene (6) betrachtbar, wenn ein Auge eines Betrachters an dem Betrachterfenster (5) positioniert ist. Das Videohologramm enthält ein Gebiet mit Information, die benötigt wird, um einen einzelnen Punkt (7) in der dreidimensionalen Szene (6) zu rekonstruieren, der vom Betrachterfenster (5) aus sichtbar ist. In dem Gebiet ist Information für diesen einzelnen Punkt (7) in der rekonstruierten dreidimensionalen Szene (6) kodierbar. Dieses Gebiet ist das einzige Gebiet im Videohologramm, das mit Information für diesen Punkt (7) kodierbar ist. Dieses Gebiet ist in der Größe so begrenzt, dass es einen Teil des gesamten Videohologramms bildet, wobei die Größe so bemessen ist, dass keine durch höhere Beugungsordnungen verursachten mehrfachen Rekonstruktionen dieses Punktes (7) vom Betrachterfenster (5) aus zu sehen sind.
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公开(公告)号：EP1435180B1
公开(公告)日：2008-01-02
申请号：EP02785045.2
申请日：2002-10-02
发明人： SCHWERDTNER, Armin
IPC分类号： H04N13/00
CPC分类号： G02B27/2214 , H04N13/305 , H04N13/31 , H04N13/324 , H04N13/376 , H04N13/398
摘要： The invention relates to autostereoscopic displays consisting of a flat display for representing both stereo images, an image separating mask comprising vertical periodical structures for channelling the left and the right stereo images onto the left and the right eye of a viewer, and a device for horizontally displacing the image separating mask according to the position of the viewer. The inventive displays are characterised in that the horizontal adjustment of the image separating mask which is divided into pixels and subpixels is limited to a region of a periodicity length of the image separating mask, when the viewer moves in a lateral manner. When the interval threshold is reached, the image separating mask is set back by one periodicity interval. The necessary displacement length of the image separating mask is thus considerably reduced. The mechanical element for the horizontal displacement of the image separating mask is simplified and can simultaneously be embodied in a more robust manner. The small regulating distance thus obtained enables the image separating mask to be adjusted even when the viewer moves quickly.
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4.发明授权
公开(公告)号：EP1435179B1
公开(公告)日：2005-03-23
申请号：EP02776791.2
申请日：2002-10-02
发明人： SCHWERDTNER, Armin
IPC分类号： H04N13/00
CPC分类号： G03H1/02 , G03H1/0486 , G03H1/2294 , G03H2001/0224 , G03H2001/2242 , G03H2223/12 , G03H2223/25 , H04N13/31
摘要： The invention relates to flat displays comprising a frontal mask for the spatial, stereoscopic and/or holographic representation of information. The invention is characterised in that the quality of the spatial, stereoscopic or holographic representations in known flat displays comprising a rough surface is significantly improved by smoothing the surface. To this end, the surface of the flat display which reduces reflection by means of its roughness is provided with a submerging and/or transparent layer, or a transparent or submerging material is situated between the surface and the mask. In the latter case, the material is enclosed in an air-tight body or the region between the flat display and the mask is sealed and contains the transparent or submerging material. A further considerable advantage is that the submerging and/or transparent layer on the surface of the flat display simultaneously protects against mechanical and/or heat and/or meteorological influences. Said layer can also be used to reduce reflection.
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公开(公告)号：EP1828853B1
公开(公告)日：2019-11-20
申请号：EP05819194.1
申请日：2005-12-22
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公开(公告)号：EP2138910A2
公开(公告)日：2009-12-30
申请号：EP09168963.8
申请日：2003-11-11
发明人： Schwerdtner, Armin
摘要： Die Erfindung betrifft Videohologramme und Einrichtungen zur Rekonstruktion von Videohologrammen mit einem optischen System, bestehend aus Lichtquelle (1), Linse (2) und dem Videohologramm (3) aus matrixförmig oder regulär angeordneten Zellen mit mindestens einer in Amplitude und/oder Phase steuerbaren Öffnung je Zelle. Die Videohologramme und Einrichtungen zur Rekonstruktion derselben zeichnen sich dadurch aus, dass holografische Videodarstellungen ausgedehnter räumlicher Objekte (6) in einem weiten Betrachterbereich mittels steuerbarer Displays in Echtzeit realisierbar sind, wobei die Objekte entweder computergeneriert oder auf andere Weise erzeugt werden. Das Space-Bandwith-Produkt (SBP) des Hologramms wird dabei auf ein Minimum reduziert, indem das Periodizitätsintervall des Fourierspektrums in der Rücktransformationsebene als Betrachterfenster (5) genutzt wird, durch welches das Objekt im davorliegenden Raum sichtbar wird. Die Beweglichkeit des/der Betrachter wird durch Nachführen des Betrachterfensters erreicht. Vorteilhafte Anwendungen bieten sich im Fernseh-, Multimedia-, Spiele- und Konstruktionsbereich, in der Militär- und Medizintechnik sowie in anderen Bereichen von Wirtschaft und Gesellschaft.
摘要翻译： 本发明涉及视频全息图和装置，用于与一个光学系统重构视频全息图由光源（1），透镜（2）和视频全息图（3）的矩阵形或定期与每可控开口中的至少一个的幅度和/或相位布置细胞 细胞。 视频全息图以及用于重建所述相同的特征在于扩展空间对象的该全息影像的表示（6）是在通过实时可控显示器装置广视野空间来实现，其中，在创建对象生成或以其他方式的计算机。 全息图的空间带宽积（SBP）降低到最低限度通过在逆傅立叶光谱的周期性间隔变换电平作为查看器窗口（5）时，通过其在它的空间前方的物体是可见的。 /观察者的移动性是通过跟踪观察者视窗实现。 有利的应用提供电视，多媒体，游戏和建筑领域，在军事和医疗技术以及在经济和社会等领域。
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7.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
发明人： SCHWERDTNER, Armin
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）。
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公开(公告)号：EP1851974B1
公开(公告)日：2008-10-01
申请号：EP06722545.8
申请日：2006-02-24
CPC分类号： G02B27/01 , G02B27/0093 , G02B27/0101 , G02B27/2228 , G02B2027/0118 , G02B2027/0134 , H04N13/32
摘要： The invention relates to a method and device for tracking the sweet spots of a sweet spot unit for a transmissive electronic display. The aim of the invention is to improve the reproduction quality and the uniformity of illumination in displays of this type. The display contains a sweet spot unit consisting of an illumination matrix (1) and reproduction elements, in addition to an image matrix (4). Once the position of at least one observer's eye (6) has been determined by a control unit using inverse ray tracing, address data for activating illumination elements (LE) of the illumination matrix (1) is provided from the position data in order to prepare the defined sweet spots (5) for said observer's eye (6). To improve the reproduction quality, an additional optical component is used in the ray path for the inverse ray tracing process. In addition to the viewing angle (a) of the observer, the control unit detects and takes into consideration a defined angle (?) of a scattering or diffractive element in a predetermined angular range. This permits additional address data to be activated for the illumination elements (LE) and the defined sweet spot (5) can be illuminated in a uniform manner.
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公开(公告)号：EP1658733B1
公开(公告)日：2008-06-18
申请号：EP04762725.2
申请日：2004-08-30
发明人： SCHWERDTNER, Armin
IPC分类号： H04N13/00
CPC分类号： H04N13/32 , H04N13/305
摘要： The invention relates to an optical imaging system for separating images, more specifically a sweet spot beam splitter, for an autostereoscopic display, which allows for greater freedom of movement of at least one observer in a lateral direction as well as regarding the distance from the display by expanding sweet spots up to and beyond the size corresponding to the distance between the eyes. The observer can move within said area without losing the 3D impression such that the demands on the positional accuracy and the reaction time of the tracking system are lowered. The inventive sweet spot beam splitter comprises a first lenticular system (L1) and a second lenticular system(L2), the strip-shaped lenses of which are disposed parallel to each other while being offset by half a lens width in a vertical direction relative to the columns of the image matrix (M). The distance therebetween preferably corresponds to the focal length of the second lenticular system (L2). The information-carrying columns of the image matrix (M) are reproduced at twice the width onto the strip lenses of the second lenticular system (L2) by means of the first lenticular system (L1). The invention allows the user-friendliness of autostereoscopic displays to be substantially improved in many applications.
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公开(公告)号：EP1820056A1
公开(公告)日：2007-08-22
申请号：EP05818431.8
申请日：2005-11-15
发明人： SCHWERDTNER, Armin
CPC分类号： B29C43/146 , B29C35/08 , B29C43/021 , B29L2011/0016 , B29L2011/005 , G02B3/0031 , G02B3/005 , G02B27/2214
摘要： The invention relates to a dimensionally-stable flat lens system and to a method for the production thereof. The flat lens system has a controllable optical flat element or an optical mask (LM) on one side of a carrier-substrate plate (TP). High requirements vis-a-vis dimensional stability are made of flat lens systems in order to obtain high-quality optical imaging, particularly in autostereoscopic displays; the flat lens system loses the required formal precision as a result of warpage or bending, whereupon high quality optical imaging is no longer achievable. The aim of the invention is to compensate the resulting material stresses, which result in warpage or bending of a flat lens system, by means of a compensating element (LX). According to the invention, the flat lens system has a flat compensating element which is connected to the carrier-substrate plate (TP), sitting firmly thereon, on the rear side of the carrier-substrate plate (TP).
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