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21.发明公开
公开(公告)号：EP1435179A1
公开(公告)日：2004-07-07
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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22.发明授权
公开(公告)号：EP1880252B1
公开(公告)日：2008-10-08
申请号：EP06742375.6
申请日：2006-05-12
发明人： SCHWERDTNER, Armin
IPC分类号： G03H1/22
CPC分类号： G03H1/0866 , G02B5/1876 , G03H1/16 , G03H1/2202 , G03H1/2249 , G03H1/2294 , G03H2001/0883 , G03H2001/221 , G03H2001/2239 , G03H2001/2242 , G03H2001/226 , G03H2001/2271 , G03H2210/30 , G03H2222/54 , G03H2223/18 , G03H2223/19 , G03H2223/24 , G03H2225/52 , G03H2225/61 , G03H2226/05
摘要： The invention relates to a projection device and a method for holographic reconstruction of scenes comprising a light modulator (8), an imaging system (3) with at least two imaging means (4, 5, 9) and an illumination device (1) with sufficient coherent light for illumination of a hologram (2) coded in the light modulator (8). The at least two imaging means (4,5) are relatively arranged such that a first imaging means (4) is provided for the magnified imaging of the light modulator (8) on a second imaging means (5). The second imaging means (5) is provided for imaging of a plane (10) of a spatial frequency spectrum of the light modulator (8) in a viewing plane (6) comprising at least one viewing window (15). The viewing window (6) corresponds to a diffraction order of the spatial frequency spectrum.
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公开(公告)号：EP1880252A2
公开(公告)日：2008-01-23
申请号：EP06742375.6
申请日：2006-05-12
发明人： SCHWERDTNER, Armin
IPC分类号： G03H1/22
CPC分类号： G03H1/0866 , G02B5/1876 , G03H1/16 , G03H1/2202 , G03H1/2249 , G03H1/2294 , G03H2001/0883 , G03H2001/221 , G03H2001/2239 , G03H2001/2242 , G03H2001/226 , G03H2001/2271 , G03H2210/30 , G03H2222/54 , G03H2223/18 , G03H2223/19 , G03H2223/24 , G03H2225/52 , G03H2225/61 , G03H2226/05
摘要： The invention relates to a projection device and a method for holographic reconstruction of scenes comprising a light modulator (8), an imaging system (3) with at least two imaging means (4, 5, 9) and an illumination device (1) with sufficient coherent light for illumination of a hologram (2) coded in the light modulator (8). The at least two imaging means (4,5) are relatively arranged such that a first imaging means (4) is provided for the magnified imaging of the light modulator (8) on a second imaging means (5). The second imaging means (5) is provided for imaging of a plane (10) of a spatial frequency spectrum of the light modulator (8) in a viewing plane (6) comprising at least one viewing window (15). The viewing window (6) corresponds to a diffraction order of the spatial frequency spectrum.
摘要翻译： （8），具有至少两个成像装置（4,5,9）的成像系统（3）以及照明装置（1），其中，所述投影装置包括光调制器 用于照射在光调制器（8）中编码的全息图（2）的足够的相干光。 所述至少两个成像装置（4,5）相对地布置成使得第一成像装置（4）被设置用于在第二成像装置（5）上放大成像光调制器（8）。 第二成像装置（5）被设置用于在包括至少一个观察窗（15）的观察平面（6）中对光调制器（8）的空间频谱的平面（10）进行成像。 观察窗（6）对应于空间频谱的衍射级。
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公开(公告)号：EP1851974A1
公开(公告)日：2007-11-07
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 (α) of the observer, the control unit detects and takes into consideration a defined angle (υ) 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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25.发明公开
公开(公告)号：EP1658733A2
公开(公告)日：2006-05-24
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：EP1658731A2
公开(公告)日：2006-05-24
申请号：EP04700665.5
申请日：2004-01-08
IPC分类号： H04N13/00
CPC分类号： H04N13/359 , H04N13/32 , H04N13/354
摘要： The invention relates to an autostereoscopic multi-user display comprising a focussing element and a selectable display for the time-sequential representation of 2D and/or 3D images. When viewed in the direction of the observer, said display contains a sweet-spot unit and an image matrix, which function separately from one another. The sweet-spot unit focuses a light distribution with a large surface area onto the eyes of the observer by means of a lateral sweet-spot extension, which is greater than or equal to the distance between the eyes of the observer. The sweet-spot bundle traverses the imaging matrix completely in a uniform manner on its way to the observer(s) and is thus modulated by the image content of the image matrix. The size of the sweet spot reduces the need for tracking precision. The sweet-spot unit consists of an illumination and imaging matrix. The illumination matrix is situated approximately in the front focal distance of the imaging matrix and can consist of backlight and an electronic shutter with controllable apertures or can be another suitable component. According to one embodiment, the shutter and the image matrix are identical in their pixel and sub-pixel geometry. The imaging matrix can be a double-lenticular, holographic optical element or similar.
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公开(公告)号：EP1563346A2
公开(公告)日：2005-08-17
申请号：EP03788795.7
申请日：2003-11-11
发明人： SCHWERDTNER, Armin
IPC分类号： G03H1/00
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： The device has an optical system with a light source(s) and lens. The video hologram has cells, e.g. in a matrix, with an opening(s) per cell of controlled amplitude/phase and an observation plane. An observation window in the observation plane at a periodicity interval of the reconstruction as a Fourier transform of the video hologram enables viewing of a three-dimensional scene. The window size is not greater than the periodicity interval. The device has an optical system consisting of at least one real or virtual point- and/or line-shaped, adequately coherent light source (1) and a lens (2) and the video hologram (3) consists of cells in a matrix or other regular arrangement with at least one opening per cell of controlled amplitude and/or phase and an observation plane at the location of the light source image. An observation window (5) is located in the observation plane at a periodicity interval of the reconstruction as a Fourier transform of the video hologram for observation of a three-dimensional scene (6). The size of the window is not greater than the periodicity interval.
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公开(公告)号：EP1960842B1
公开(公告)日：2012-03-21
申请号：EP06722827.0
申请日：2006-04-25
发明人： HÄUSSLER, Ralf , SCHWERDTNER, Armin
CPC分类号： G03H1/2286 , G02B5/32 , G02B27/225 , G03H1/0005 , G03H1/2294 , G03H2001/0212 , G03H2222/34 , G03H2223/19 , H04N13/32
摘要： The invention relates to a controllable illumination device for an autostereoscopic or holographic display, which illumination device contains an illumination matrix of primary light sources having at least one luminous element per light source and a controllable light modulator (SLM) and a reproduction matrix. A computer-generated hologram (CGH) illuminated by the primary light sources (11, ..., 1 n) is coded on the controllable light modulator (SLM) and generates, in at least one plane downstream of the SLM, a matrix - reconstructed from the computer-generated hologram (CGH) - of secondary light sources (2) having a secondary light distribution for the purpose of illuminating the reproduction matrix (4) and for the purpose of focussing in light bundles onto each eye of the viewer via an imaging matrix. The CGH is calculated and reconstructed on the basis of the number of and the positions of the viewers and the system parameters. Owing to the reconstruction of the secondary light sources in a plurality of planes, it is possible for the image information of the display to be tracked for the viewers not only in the case of lateral movements but also in the axial direction.
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公开(公告)号：EP1776614B1
公开(公告)日：2011-07-13
申请号：EP06724728.8
申请日：2006-05-05
IPC分类号： G03H1/22
CPC分类号： G03H1/2286 , G03H1/2249 , G03H1/2294 , G03H2001/2236 , G03H2001/2242 , G03H2001/2263 , G03H2001/2297 , G03H2210/30 , G03H2222/20 , G03H2222/22 , G03H2222/23 , G03H2222/24 , G03H2222/34 , G03H2223/12 , G03H2223/19 , G03H2225/55 , G03H2225/60 , G03H2226/05 , G03H2240/51
摘要： A device for holographic reconstruction of three-dimensional scenes includes optical focusing means which directs sufficiently coherent light from light means to the eyes of at least one observer via a spatial light modulator that is encoded with holographic information. The device has a plurality of illumination units for illuminating the surface of the spatial light modulator (SLM); each unit comprises a focusing element (21/22/23 or 24), and a light means (LS1/LS2/LS3 or LS4) that emits sufficiently coherent light such that each of these illumination units illuminates one separate illuminated region (R1/R2/R3 or R4) of the surface, whereby the focusing element and the light means are arranged such that the light emitted by the light means (LS1 - LS4) coincides close to or at the observer eyes.
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