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公开(公告)号：US20190011883A1
公开(公告)日：2019-01-10
申请号：US15749331
申请日：2017-07-11
发明人： Bingchuan SHI
CPC分类号： G03H1/12 , G03H1/02 , G03H1/0841 , G03H1/2249 , G03H1/2294 , G03H2001/0212 , G03H2001/0224 , G03H2001/2284 , G03H2001/2297 , G03H2240/42
摘要： A hologram display apparatus and a hologram display method are provided. The hologram display apparatus includes a controller and a display device. The controller is configured to obtain plural grayscale values Gi of an image of a to-be-displayed object, generate plural display sub-image codes Qj according to the plurality of grayscale values Gi and transmit the plurality of display sub-image codes Qj to the display device, where i=1, 2, . . . , m, j=1, 2, . . . N, each of m and N is a positive integer. The display device is configured to generate and display plural sub-holograms according to the plurality of display sub-image codes, a quantity of the plurality of sub-holograms being equal to that of the plurality of display sub-image codes, such that the plurality of sub-holograms are superimposed to generate a hologram of the image of the to-be-displayed object in human eyes.
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公开(公告)号：US09904250B2
公开(公告)日：2018-02-27
申请号：US15280184
申请日：2016-09-29
发明人： Yuntae Kim , Juwon Seo , Hongseok Lee
CPC分类号： G03H1/0891 , G03H1/0841
摘要： Provided are a method and device for processing a holographic image. The method includes generating a complex array by performing frequency conversion of input image data on a pixel-by-pixel basis, encoding per-pixel amplitude information and per-pixel phase information represented by complex numbers included in the complex array into real number values, sorting the real number values of the per-pixel amplitudes according to a magnitude and setting a prescribed-order number from among the real number values of the per-pixel amplitudes to a reference value, and normalizing the real number values of the per-pixel amplitudes based on the reference value.
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公开(公告)号：US20160132021A1
公开(公告)日：2016-05-12
申请号：US14896085
申请日：2014-06-04
发明人： Enrico ZSCHAU
CPC分类号： G03H1/0841 , G03H1/0808 , G03H1/2294 , G03H2001/0858 , G03H2001/2605 , G03H2210/30 , G03H2210/452 , G03H2226/02
摘要： An apparatus and a method for optimized calculation of 2D sub-holograms for object points of a three-dimensional scene and a pipeline for real-time calculation of holograms are provided. The invention shortens the calculation time of a hologram for representing a three-dimensional scene and/or to reduce the calculation complexity of such a hologram. This is achieved by a 2D sub-hologram of an object point, which has image elements of the spatial light modulator, comprises a half 1D sub-hologram, where the radius of each image element is determined and each image element of the 2D sub-hologram is fixedly assigned to at least one image element of the half 1D sub-hologram with identical or similar radius by way of an electronic circuit, by a method for encoding a hologram, and by a pipeline on the basis of FPGA and/or ASIC.
摘要翻译： 提供了一种用于优化计算三维场景的对象点的二维子全息图和用于实时计算全息图的流水线的装置和方法。 本发明缩短了用于表示三维场景的全息图的计算时间和/或缩短了这种全息图的计算复杂度。 这是通过具有空间光调制器的图像元素的物点的2D子全息图，包括半1D子全息图，其中确定每个图像元素的半径，并且2D子全息图的每个图像元素， 全息图通过电子电路，通过用于编码全息图的方法和通过基于FPGA和/或ASIC的流水线固定地分配给具有相同或相似半径的半1D子全息图的至少一个图像元素 。
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公开(公告)号：US20150323899A1
公开(公告)日：2015-11-12
申请号：US14803344
申请日：2015-07-20
CPC分类号： G03H1/08 , G02B27/0093 , G03H1/0808 , G03H1/0841 , G03H1/22 , G03H1/2294 , G03H1/28 , G03H2001/0833 , G03H2210/452 , G03H2225/33 , G03H2226/02
摘要： An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. The visibility region, together with each object point of the scene to be reconstructed, defines a sub-hologram and the whole hologram is generated from a superposition of sub-holograms, wherein the complex hologram values of a sub-hologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.
摘要翻译： 公开了一种用于计算具有至少一个光调制装置的全息再现装置的视频全息图的分析方法，其中分割成对象点的场景被编码为整个全息图，并且可以被看作是位于内部的可视区域的重建 重建的周期性间隔。 可视区域与要重建的场景的每个对象点一起定义了一个子全息图，并且从副全息图的叠加产生了全息图，其中从全波图的复数全息图值被确定 通过计算和评估在调制器区域中形成的成像元件的传输或调制功能，在光调制装置的调制器区域中重构的各个物体点的前方。 要重建的对象点位于成像元件的焦点处。
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公开(公告)号：US09158281B2
公开(公告)日：2015-10-13
申请号：US14273997
申请日：2014-05-09
IPC分类号： G03H1/08 , G03H1/00 , G03H1/22 , G03H1/30 , B42D25/328
CPC分类号： G03H1/0891 , B42D25/328 , B42D2035/20 , G03H1/0011 , G03H1/08 , G03H1/0841 , G03H2001/0027 , G03H2001/2273 , G03H2001/303
摘要： Two original images to be recorded are prepared as data (S10). A plurality of unit regions, each having an adequate area to record interference fringes of visible light, are defined and positioned on a hologram recording surface (S20). A gradation pattern, with which appearance probabilities of two record attributes gradually change in space, is overlapped onto the recording surface, and to each unit region, one of either record attributes is assigned according to the appearance probabilities of the respective record attributes at each individual position (S30). In each unit region, to which the first record attribute is assigned, the first original image is recorded as an interference fringe pattern, a diffraction grating pattern, or a scattering structure pattern, and in each unit region, to which the second record attribute is assigned, the second original image is recorded as an interference fringe pattern, a diffraction grating pattern, or a scattering structure pattern (S40), and a record pattern is formed on a physical medium (S50).
摘要翻译： 准备要记录的两个原始图像作为数据（S10）。 定义并定位在全息记录表面上的多个单位区域，每个区域具有足够的面积来记录可见光的干涉条纹（S20）。 将两个记录属性的外观概率在空间中逐渐变化的渐变图案重叠在记录表面上，并且对于每个单位区域，根据每个个体的各个记录属性的外观概率来分配记录属性之一 位置（S30）。 在分配了第一记录属性的每个单位区域中，第一原始图像被记录为干涉条纹图案，衍射光栅图案或散射结构图案，并且在每个单位区域中，第二记录属性为 将第二原始图像记录为干涉条纹图案，衍射光栅图案或散射结构图案（S40），并且在物理介质上形成记录图案（S50）。
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公开(公告)号：US20150124302A1
公开(公告)日：2015-05-07
申请号：US14361739
申请日：2012-11-29
发明人： Norbert Leister
CPC分类号： G03H1/0841 , G02B27/4205 , G02B27/4266 , G02B27/4272 , G03H1/0808 , G03H1/2205 , G03H1/2294 , G03H1/26 , G03H2001/0816 , G03H2001/0825 , G03H2223/23 , G03H2225/33 , G03H2226/02
摘要： A hologram is constructed from individual subholograms assigned to corresponding encoding regions in a light modulation device and respectively assigned to an object point of the object to be reconstructed with the hologram. With a virtual observer window, a defined viewing region is provided through which a reconstructed scene in a reconstruction space is observed by an observer. A complex value of a wavefront for each individual object point is calculated in the virtual observer window. Each individual amplitude of a complex value of a wavefront in the virtual observer window is subsequently multiplied by a correction value with which a correction of the angle selectivity of at least one volume grating arranged downstream in the beam path of the light modulation device is carried out. The corrected complex values determined in this way for all object points are summed and transformed into the hologram plane of the light modulation device.
摘要翻译： 全息图由分配给光调制装置中的相应编码区域的各个子图表构成，并分别分配给要用全息图重建的对象物体点。 通过虚拟观察者窗口，提供了定义的观察区域，观察者观察重构空间中的重建场景。 在虚拟观察窗中计算每个单独对象点的波阵面的复值。 随后将虚拟观察窗中的波阵面的复数值的每个单独振幅乘以校正值，利用该修正值对光调制装置的光束路径中布置在下游的至少一个体积光栅的角度选择性进行校正 。 以这种方式为所有对象点确定的校正后的复数值被求和并变换成光调制装置的全息图平面。
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7.发明授权公开(公告)号：US08400696B2
公开(公告)日：2013-03-19
申请号：US10585253
申请日：2005-01-05
申请人： Takahiro Ikeda , Tamiki Takemori
发明人： Takahiro Ikeda , Tamiki Takemori
IPC分类号： G02B5/32
CPC分类号： G03H1/0841 , G03H1/08 , G03H1/2249 , G03H1/2294 , G03H2001/0858 , G03H2001/221 , G03H2210/30 , G03H2225/52
摘要： A three-dimensional image displaying apparatus comprises a spatial light modulation element having a discrete pixel structure and expressing a hologram, an illumination optical system generating reconstruction light by causing illumination light to enter said spatial light modulation element that expresses the hologram, and a lens as a reconstruction image converting optical system displaying a reconstruction image by producing a virtual image wavefront-converted from the reconstruction light.
摘要翻译： 三维图像显示装置包括具有离散像素结构并表示全息图的空间光调制元件，通过使照明光进入表示全息图的空间光调制元件而产生重构光的照明光学系统，以及透镜 重建图像转换光学系统，通过产生从重建光波前转换的虚拟图像来显示重建图像。
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公开(公告)号：US20130044105A1
公开(公告)日：2013-02-21
申请号：US13590086
申请日：2012-08-20
CPC分类号： G03H1/0808 , G03H1/0841 , G03H1/2249 , G03H2001/0421 , G03H2001/0825 , G03H2001/0858 , G03H2001/2263 , G03H2210/30 , G03H2210/441 , G03H2226/02
摘要： System and method for video holographic display. Information is received regarding a 2D hogel array with multiple hogel apertures, specifying number, size, and/or spacing of the hogel apertures. Information regarding a 3D scene is received, including a scaling factor mapping the 3D scene to a 3D display volume. Due to gradual variation of radiation patterns from hogel to hogel, a full set of color radiation intensity patterns for the entire hogel array may be generated by interpolating the color radiation intensity patterns from a sparse subset of the hogels without having to compute all of the patterns. The full set of color radiation intensity patterns may then be used to holographically display the 3D scene.
摘要翻译： 视频全息显示系统和方法。 接收关于具有多个格栅孔的2D格栅阵列的信息，指定了孔眼的数量，尺寸和/或间隔。 接收关于3D场景的信息，包括将3D场景映射到3D显示体积的缩放因子。 由于从黑格尔到黑格尔的辐射图形的逐渐变化，整个黑格尔阵列的全部颜色辐射强度图案可以通过内插来自粒子的稀疏子集的颜色辐射强度图案而不必计算所有图案 。 然后可以使用全套彩色辐射强度图案来全息地显示3D场景。
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9.发明授权Method and apparatus for generating reconstructions of information encoded in ambient light modulators 失效用于产生在环境光调制器中编码的信息的重建的方法和装置公开(公告)号：US08264774B2
公开(公告)日：2012-09-11
申请号：US12306558
申请日：2007-06-22
CPC分类号： G02B27/58 , G02B27/46 , G03H1/0841 , G03H1/2294 , G03H2001/0224 , G03H2001/221 , G03H2001/262 , G03H2222/35 , G03H2223/12 , G03H2225/55 , G03H2225/60 , G03H2240/56
摘要： The present invention relates to a method and device for the generation of reconstructions of information encoded on spatial light modulators by way of illumination with coherent incident waves. The invention includes the following steps: Splitting of the incident wave into at least two incident sub-waves, Modulation of the incident sub-waves with the help of selected apodization functions so to form modulated incident sub-waves, Direction of the modulated incident sub-waves towards the corresponding, spatially separated and pixel-matrix-shifted spatial light modulators, Diffraction of the modulated incident sub-waves at the encoded pixels of the respective spatial light modulators, Additive combination of the sub-waves emitted by the respective spatial light modulators to form one common emitted wave, and Transformation of the emitted wave into the Fourier plane with the help of a projection system.
摘要翻译： 本发明涉及一种用于通过具有相干入射波的照明来生成在空间光调制器上编码的信息的重建的方法和装置。 本发明包括以下步骤：将入射波分解成至少两个入射的子波，借助于选择的变迹函数调制入射子波，从而形成调制的入射子波，调制事件子方向 朝向相应的空间分离和像素矩阵移动的空间光调制器，在各个空间光调制器的编码像素处的调制的入射子波的衍射，由各个空间光发射的子波的加法组合 调制器形成一个共同的发射波，并借助投影系统将发射波转换成傅立叶平面。
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公开(公告)号：US20110267664A1
公开(公告)日：2011-11-03
申请号：US13180067
申请日：2011-07-11
IPC分类号： G03H1/08
CPC分类号： G03H1/0891 , B42D25/328 , B42D2035/20 , G03H1/0011 , G03H1/08 , G03H1/0841 , G03H2001/0027 , G03H2001/2273 , G03H2001/303
摘要： Two original images to be recorded are prepared as data (S10). A plurality of unit regions, each having an adequate area to record interference fringes of visible light, are defined and positioned on a hologram recording surface (S20). A gradation pattern, with which appearance probabilities of two record attributes gradually change in space, is overlapped onto the recording surface, and to each unit region, one of either record attributes is assigned according to the appearance probabilities of the respective record attributes at each individual position (S30). In each unit region, to which the first record attribute is assigned, the first original image is recorded as an interference fringe pattern, a diffraction grating pattern, or a scattering structure pattern, and in each unit region, to which the second record attribute is assigned, the second original image is recorded as an interference fringe pattern, a diffraction grating pattern, or a scattering structure pattern (S40), and a record pattern is formed on a physical medium (S50).
摘要翻译： 准备要记录的两个原始图像作为数据（S10）。 定义并定位在全息记录表面上的多个单位区域，每个区域具有足够的面积来记录可见光的干涉条纹（S20）。 将两个记录属性的外观概率在空间中逐渐变化的渐变图案重叠在记录表面上，并且对于每个单位区域，根据每个个体的各个记录属性的外观概率来分配记录属性之一 位置（S30）。 在分配了第一记录属性的每个单位区域中，第一原始图像被记录为干涉条纹图案，衍射光栅图案或散射结构图案，并且在每个单位区域中，第二记录属性为 将第二原始图像记录为干涉条纹图案，衍射光栅图案或散射结构图案（S40），并且在物理介质上形成记录图案（S50）。
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