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    Systems and Methods for Shear-Corrected Digital Hologram Acquisition
    1.
    发明申请
    Systems and Methods for Shear-Corrected Digital Hologram Acquisition 有权
    剪切校正数字全息图采集系统与方法

    公开(公告)号：US20110279878A1

    公开(公告)日：2011-11-17

    申请号：US13106964

    申请日：2011-05-13

    申请人： Clarence E. Thomas

    发明人： Clarence E. Thomas

    IPC分类号： G03H1/04

    CPC分类号： G03H1/08 ,  G01B9/021 ,  G03H1/0443 ,  G03H2001/0456 ,  G03H2222/13

    摘要： Systems and methods for shear-corrected digital hologram acquisition, wherein the shear-corrected geometry is highly suited for two (or more) color operation with either broadband or laser illumination. An apparatus for shear-corrected recording of a spatially heterodyne hologram with broad-band or laser illumination includes: an illumination source; a beamsplitter optically coupled to said illumination source(s); a reference beam corner-mirror pair for translation and phase-shaping of the object beam optically coupled to the beamsplitter; an object optically coupled to the beamsplitter; a focusing lens optically coupled to both the reference beam corner-mirror pair and the object; and a digital recorder optically coupled to the focusing lens. A reference beam is incident upon the translating and phase-shaping corner-mirror pair, and the reference beam and an object beam are focused by the focusing lens at a focal plane of the digital recorder to form a spatially heterodyne hologram.

    摘要翻译： 用于剪切校正的数字全息图采集的系统和方法，其中剪切校正的几何形状非常适合于具有宽带或激光照明的两个（或多个）颜色操作。 具有宽带或激光照射的空间外差全息图的剪切校正记录装置包括：照明源; 光学耦合到所述照明源的分束器; 用于对光束耦合到分束器的物镜的平移和相位成形的参考光束角镜对; 光学耦合到分束器的物体; 光学耦合到参考光束角镜对和对象的聚焦透镜; 以及光学耦合到聚焦透镜的数字记录器。 参考光束入射到平移和相位成形角镜对上，并且参考光束和物体光束被聚焦透镜聚焦在数字记录器的焦平面处以形成空间上的外差全息图。

    Single beam write and/or replay of spatial heterodyne holograms
    2.
    发明授权
    Single beam write and/or replay of spatial heterodyne holograms 有权
    单光束写入和/或重放空间外差全息图

    公开(公告)号：US07298532B2

    公开(公告)日：2007-11-20

    申请号：US10166859

    申请日：2002-06-11

    申请人： Clarence E. Thomas ,  Gregory R. Hanson

    发明人： Clarence E. Thomas ,  Gregory R. Hanson

    IPC分类号： G03H1/08 ,  G03H1/00 ,  G03H1/04

    CPC分类号： G03H1/0406 ,  G01B9/021 ,  G03H1/02 ,  G03H1/0443 ,  G03H1/0866 ,  G03H1/0891 ,  G03H1/22 ,  G03H1/2249 ,  G03H1/2294 ,  G03H2001/0033 ,  G03H2001/005 ,  G03H2001/0066 ,  G03H2001/0088 ,  G03H2001/0456 ,  G03H2001/2263 ,  G03H2210/30 ,  G03H2222/18 ,  G03H2226/11

    摘要： A method of writing a spatially heterodyne hologram having spatially heterodyne fringes includes: passing a single write beam through a spatial light modulator that digitally modulates said single write beam; and focusing the single write beam at a focal plane of a lens to impose a holographic diffraction grating pattern on the photorefractive crystal, the holographic diffraction grating pattern including the spatially heterodyne hologram having spatially heterodyne fringes, wherein only said single write beam is incident on said photorefractive crystal without a reference beam. A method of replaying a spatially heterodyne hologram having spatially heterodyne fringes at a replay angle includes: illuminating a photorefractive crystal having a holographic diffraction grating with a beam from a laser at an illumination angle, the holographic diffraction grating pattern including the spatially heterodyne hologram having spatially heterodyne fringes, wherein a difference between said illumination angle and said replay angle defines a diffraction angle α that is a function of a plane wave mathematically added to original object wave phase and amplitude data of said spatially heterodyne hologram having spatially heterodyne fringes.

    摘要翻译： 写入具有空间外差条纹的空间外差全息图的方法包括：使单个写入光束通过数字调制所述单个写入光束的空间光调制器; 并且将单个写入光束聚焦在透镜的焦平面处，以在光折射晶体上施加全息衍射光栅图案，该全息衍射光栅图案包括具有空间外差条纹的空间外差全息图，其中只有所述单个写入光束入射到所述 没有参考光束的光折射晶体。 在重放角度重放具有空间外差条纹的空间外差全息图的方法包括：以具有照射角度的来自激光束的光束照射具有全息衍射光栅的光折射晶体，全息衍射光栅图案包括空间上的外差全息图 其中所述照射角和所述重放角之间的差定义了衍射角α，所述衍射角α是在数学上加到原始物体波相位的平面波和具有空间外差条纹的所述空间外差全息图的幅度数据的函数。

    System and Methods for Shearless Hologram Acquisition
    4.
    发明申请
    System and Methods for Shearless Hologram Acquisition 有权
    无全息图采集系统与方法

    公开(公告)号：US20090073522A1

    公开(公告)日：2009-03-19

    申请号：US11857502

    申请日：2007-09-19

    申请人： Clarence E. Thomas

    发明人： Clarence E. Thomas

    IPC分类号： G03H1/26

    CPC分类号： G03H1/08 ,  G03H1/0443 ,  G03H1/10 ,  G03H2001/0456 ,  G03H2001/0458 ,  G03H2222/13 ,  G03H2223/13

    摘要： Systems and methods for shearless digital hologram acquisition, including an apparatus incorporating an illumination source configured to produce a first beam of light, which is then split by a beamsplitter into a reference beam and an object illumination beam. The reference beam is directed onto a phase-shaping optical element which imparts a phase shift to the reference beam and returns the phase-shifted reference beam on itself to the beamsplitter. The object illumination beam is directed onto an object, and a portion of the beam is reflected back to the beamsplitter, which combines the phase-shifted reference beam and object illumination beam substantially coaxially. The combined beams are passed through a focusing lens which focuses them at a focal plane. A digital recorder is positioned at the focal plane to record the spatially heterodyne hologram formed by the focused phase-shifted reference beam and reflected object illumination beam.

    摘要翻译： 用于无剪切数字全息图采集的系统和方法，包括结合了被配置为产生第一光束的照明源的装置，然后将其由分束器分割成参考光束和物体照明光束。 参考光束被引导到相位整形光学元件上，该相位整形光学元件向参考光束施加相移，并将相位偏移的参考光束自身返回到分光镜。 物体照明光束被引导到物体上，并且光束的一部分被反射回到分束器，其将基本上同轴的相移参考光束和物体照明光束组合。 组合的光束通过将聚焦透镜聚焦在聚焦平面上的聚焦透镜。 数字记录器位于焦平面处，以记录由聚焦相移参考光束和反射物体照射光束形成的空间外差全息图。

    Spatially-heterodyned holography
    5.
    发明授权
    Spatially-heterodyned holography 失效
    空间外差全息术

    公开(公告)号：US07002691B2

    公开(公告)日：2006-02-21

    申请号：US10421448

    申请日：2003-04-23

    申请人： Clarence E. Thomas ,  Gregory R. Hanson

    发明人： Clarence E. Thomas ,  Gregory R. Hanson

    IPC分类号： G01B9/02

    CPC分类号： G03H1/0406 ,  G01B9/021 ,  G03H1/02 ,  G03H1/0443 ,  G03H1/0866 ,  G03H1/0891 ,  G03H1/22 ,  G03H1/2249 ,  G03H1/2294 ,  G03H2001/0033 ,  G03H2001/005 ,  G03H2001/0066 ,  G03H2001/0088 ,  G03H2001/0456 ,  G03H2001/2263 ,  G03H2210/30 ,  G03H2222/18 ,  G03H2226/11

    摘要： A method of recording a spatially low-frequency heterodyne hologram, including spatially heterodyne fringes for Fourier analysis, includes: splitting a laser beam into a reference beam and an object beam; interacting the object beam with an object; focusing the reference beam and the object beam at a focal plane of a digital recorder to form a spatially low-frequency heterodyne hologram including spatially heterodyne fringes for Fourier analysis; digital recording the spatially low-frequency heterodyne hologram; Fourier transforming axes of the recorded spatially low-frequency heterodyne hologram including spatially heterodyne fringes in Fourier space to sit on top of a heterodyne carrier frequency defined by an angle between the reference beam and the object beam; cutting off signals around an origin; and performing an inverse Fourier transform.

    摘要翻译： 一种记录空间低频外差全息图的方法，包括用于傅立叶分析的空间外差条纹，包括：将激光束分成参考光束和物体光束; 将物体光束与物体相互作用; 将参考光束和物体光束聚焦在数字记录器的焦平面上，以形成用于傅立叶分析的空间外差条纹的空间低频外差全息图; 数字记录空间低频外差全息图; 所记录的空间低频外差全息图的傅立叶变换轴包括傅立叶空间中的空间外差条纹，以坐在由参考光束和物体光束之间的角度限定的外差载波频率的顶部; 切断原点周围的信号; 并执行逆傅里叶变换。

    Off-axis illumination direct-to-digital holography
    6.
    发明授权
    Off-axis illumination direct-to-digital holography 有权

    公开(公告)号：US06747771B2

    公开(公告)日：2004-06-08

    申请号：US10234044

    申请日：2002-09-03

    申请人： Clarence E. Thomas ,  Jeffery R. Price ,  Edgar Voelkl ,  Gregory R. Hanson

    发明人： Clarence E. Thomas ,  Jeffery R. Price ,  Edgar Voelkl ,  Gregory R. Hanson

    IPC分类号： G03H122

    CPC分类号： G03H1/0866 ,  G01B9/021 ,  G03H2001/0456

    摘要： Systems and methods are described for off-axis illumination direct-to-digital holography. A method of recording an off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis, includes: reflecting a reference beam from a reference mirror at a non-normal angle; reflecting an object beam from an object at an angle with respect to an optical axis defined by a focusing lens; focusing the reference beam and the object beam at a focal plane of a digital recorder to form the off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; digitally recording the off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes for Fourier analysis; Fourier analyzing the recorded off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes by transforming axes of the recorded off-axis illuminated spatially heterodyne hologram including spatially heterodyne fringes in Fourier space to sit on top of a heterodyne carrier frequency defined as an angle between the reference beam and the object beam; applying a digital filter to cut off signals around an original origin; and then performing an inverse Fourier transform.

    Systems and methods for alignment, calibration and rendering for an angular slice true-3D display
    7.
    发明授权
    Systems and methods for alignment, calibration and rendering for an angular slice true-3D display 有权
    用于角切片真3D显示的对准，校准和渲染的系统和方法

    公开(公告)号：US09357206B2

    公开(公告)日：2016-05-31

    申请号：US13480432

    申请日：2012-05-24

    申请人： Clarence E. Thomas ,  David L. Page

    发明人： Clarence E. Thomas ,  David L. Page

    IPC分类号： H04N13/04 ,  G06T7/00 ,  H04N9/31

    CPC分类号： H04N13/349 ,  G06T7/73 ,  G06T2207/30204 ,  H04N9/3147 ,  H04N9/3182 ,  H04N9/3194 ,  H04N13/302 ,  H04N13/327 ,  H04N13/363

    摘要： Systems and methods for calibrating a 3D display system. In one embodiment, a system includes a display screen, 2D image projectors that project 2D projection images onto the screen and a camera that captures calibration images of the screen. A computer generates the 2D projection images, which include calibration patterns, and processes the captured calibration images. The computer uses the calibration images to calculate corrections based upon the calibration images. The computer can then generate corrected 2D projection images that are projected by the 2D image projectors onto the screen to produce a substantially visually correct 3D image with continuous viewing, true horizontal parallax, and a different view for each eye within a valid viewing zone. The corrections to the images may include corrections to the geometry (including distortion, alignment, etc.) color (including intensity and related parameters).

    摘要翻译： 用于校准3D显示系统的系统和方法。 在一个实施例中，系统包括显示屏幕，将2D投影图像投影到屏幕上的2D图像投影仪和捕获屏幕的校准图像的相机。 计算机生成2D投影图像，其包括校准图案，并处理所捕获的校准图像。 计算机使用校准图像根据校准图像计算校正值。 然后，计算机可以生成由2D图像投影仪投影到屏幕上的校正的2D投影图像，以产生具有连续观看，真实水平视差以及在有效观看区域内的每只眼睛的不同视图的基本上视觉正确的3D图像。 对图像的校正可能包括校正几何（包括失真，对齐等）颜色（包括强度和相关参数）。

    System and methods for angular slice true 3-D display
    8.
    发明授权
    System and methods for angular slice true 3-D display 有权
    角切片真三维显示的系统和方法

    公开(公告)号：US08075138B2

    公开(公告)日：2011-12-13

    申请号：US12391178

    申请日：2009-02-23

    申请人： Clarence E. Thomas

    发明人： Clarence E. Thomas

    IPC分类号： G03B21/14

    CPC分类号： G03B21/14 ,  G02B27/225 ,  H04N13/324 ,  H04N13/351 ,  H04N13/363

    摘要： Systems and methods for generating a true 3-D display, where each of a viewer's eyes not only sees a different scene, but the scene changes continuously as the viewer moves his/her head or change his/her position from one angular location to another angular location with respect to the display screen. In one embodiment, a system comprises a set of 2-D image projectors and a display screen. The 2-D image projectors are configured to project individual 2-D images substantially in focus on the display screen. The display screen then diffuses (or reflects) each pixel from each of the 2-D images into a small angular slice. This enables the viewer observing the display screen to see a different one of the 2-D images with each eye. Further, the image seen by each eye varies as the viewer moves his or her head with respect to the display screen.

    摘要翻译： 用于产生真实3-D显示器的系统和方法，其中每个观看者的眼睛不仅看到不同的场景，而且当观察者移动他/她的头部或者将他/她的位置从一个角位置改变到另一个角度时场景不断变化 相对于显示屏的角位置。 在一个实施例中，系统包括一组2-D图像投影仪和显示屏幕。 2-D图像投影仪被配置为在显示屏上投影基本上聚焦的各个2-D图像。 然后，显示屏幕将每个2-D图像中的每个像素扩散（或反射）到小角度切片中。 这使得观察观察显示屏的观看者能够看到与每只眼睛不同的2-D图像。 此外，每个眼睛看到的图像随着观看者相对于显示屏移动他或她的头部而变化。

    Acquisition and replay systems for direct-to-digital holography and holovision
    9.
    发明授权
    Acquisition and replay systems for direct-to-digital holography and holovision 失效
    用于直接数字全息和全息的采集和重放系统

    公开(公告)号：US06525821B1

    公开(公告)日：2003-02-25

    申请号：US09477267

    申请日：2000-01-04

    申请人： Clarence E. Thomas ,  Gregory R. Hanson

    发明人： Clarence E. Thomas ,  Gregory R. Hanson

    IPC分类号： G01B9021

    CPC分类号： G03H1/0406 ,  G01B9/021 ,  G03H1/02 ,  G03H1/0443 ,  G03H1/0866 ,  G03H1/0891 ,  G03H1/22 ,  G03H1/2249 ,  G03H1/2294 ,  G03H2001/0033 ,  G03H2001/005 ,  G03H2001/0066 ,  G03H2001/0088 ,  G03H2001/0456 ,  G03H2001/2263 ,  G03H2210/30 ,  G03H2222/18 ,  G03H2226/11

    摘要： Improvements to the acquisition and replay systems for direct-to-digital holography and holovision are described. A method of recording an off-axis hologram includes: splitting a laser beam into an object beam and a reference beam; reflecting the reference beam from a reference beam mirror; reflecting the object beam from an illumination beamsplitter; passing the object beam through an objective lens; reflecting the object beam from an object; focusing the reference beam and the object beam at a focal plane of a digital recorder to form an off-axis hologram; digitally recording the off-axis hologram; and transforming the off-axis hologram in accordance with a Fourier transform to obtain a set of results. A method of writing an off-axis hologram includes: passing a laser beam through a spatial light modulator; and focusing the laser beam at a focal plane of a photorefractive crystal to impose a holographic diffraction grating pattern on the photorefractive crystal. A method of replaying an off-axis hologram includes: illuminating a photorefractive crystal having a holographic diffraction grating with a replay beam.

    摘要翻译： 描述了对于直接数字全息术和全息术的采集和重放系统的改进。 记录离轴全息图的方法包括：将激光束分割成物体光束和参考光束; 从参考光束反射镜反射参考光束; 从照明分束器反射物体光束; 使物体光束通过物镜; 从物体反射物体光束; 将参考光束和物体光束聚焦在数字记录器的焦平面上以形成离轴全息图; 数字记录离轴全息图; 并根据傅立叶变换变换离轴全息图以获得一组结果。 写入离轴全息图的方法包括：使激光束通过空间光调制器; 并将激光束聚焦在光折射晶体的焦平面上，以在光折射晶体上施加全息衍射光栅图案。 重放离轴全息图的方法包括：用具有重放光束的全息衍射光栅照射具有光折射晶体。