公开(公告)号：US07787165B2

公开(公告)日：2010-08-31

申请号：US11600402

申请日：2006-11-15

申请人： Tien-Hsin Chao

发明人： Tien-Hsin Chao

IPC分类号： G03H1/28

CPC分类号： G03H1/28 ,  G03H1/265 ,  G03H2001/0268 ,  G11C11/56 ,  G11C13/042

摘要： A holographic memory system and apparatus, and a method provide the ability to store multibit holograms in a photorefractive crystal. A single laser diode is configured to emit a collimated laser beam to both write a page of multibit data to and read the page of multibit data from the photorefractive crystal. A multilevel spatial light modulator (DMDSLM) is configured to encode the page of multibit data on an input beam split from the collimated laser beam. A first imaging relay lens pair is positioned between the multilevel spatial light modulator and the photorefractive crystal to image a multibit spatial light modulator image on a plane behind the photorefractive crystal. One or more mirrors are configured to steer a reference beam, split from the collimated laser beam, at high speed to the photorefractive crystal to read or write a page of the multi-bit data.

摘要翻译： 一种全息记忆系统和装置，以及一种提供将多位全息图存储在光折射晶体中的能力。 单个激光二极管被配置为发射准直激光束以将多页数据的页面写入到光折射晶体并从该光折射晶体读取多位数据的页面。 多级空间光调制器（DMDSLM）被配置为在从准直激光束分割的输入光束上对多位数据的页进行编码。 第一成像中继透镜对定位在多层空间光调制器和光折射晶体之间，以在光折射晶体后面的平面上成像多位空间光调制器图像。 一个或多个镜被配置为将从准直激光束分离的参考光束以高速转向光折变晶体以读取或写入多位数据的页面。

公开(公告)号：US07149014B2

公开(公告)日：2006-12-12

申请号：US10824722

申请日：2004-04-15

申请人： Tien-Hsin Chao ,  Jay C. Hanan ,  George F. Reyes ,  Hanying Zhou

发明人： Tien-Hsin Chao ,  Jay C. Hanan ,  George F. Reyes ,  Hanying Zhou

IPC分类号： G03H1/26

CPC分类号： G03H1/265 ,  G03H1/26 ,  G03H2260/54 ,  G11B7/0065

摘要： A method, apparatus, and system provide the ability for storing holograms at high speed. A single laser diode emits a collimated laser beam to both write to and read from a photorefractice crystal. One or more liquid crystal beam steering spatial light modulators (BSSLMs) or Micro-Electro-Mechanical Systems (MEMS) mirrors steer a reference beam, split from the collimated laser beam, at high speed to the photorefractive crystal.

摘要翻译： 方法，装置和系统提供高速存储全息图的能力。 单个激光二极管发射准直激光束，以便对光折射晶体进行写入和读取。 一个或多个液晶光束转向空间光调制器（BSSLM）或微机电系统（MEMS）镜将从准直激光束分离的参考光束以高速转向光折变晶体。

公开(公告)号：US20060171008A1

公开(公告)日：2006-08-03

申请号：US11216803

申请日：2005-08-30

申请人： Frederick Mintz ,  Tien-Hsin Chao ,  Nevin Bryant ,  Peter Tsou

发明人： Frederick Mintz ,  Tien-Hsin Chao ,  Nevin Bryant ,  Peter Tsou

IPC分类号： G02B5/32

CPC分类号： G02B27/2285 ,  H04N13/363 ,  H04N13/393

摘要： The present invention relates to a three-dimensional (3D) hologram display system. The 3D hologram display system includes a projector device for projecting an image upon a display medium to form a 3D hologram. The 3D hologram is formed such that a viewer can view the holographic image from multiple angles up to 360 degrees. Multiple display media are described, namely a spinning diffusive screen, a circular diffuser screen, and an aerogel. The spinning diffusive screen utilizes spatial light modulators to control the image such that the 3D image is displayed on the rotating screen in a time-multiplexing manner. The circular diffuser screen includes multiple, simultaneously-operated projectors to project the image onto the circular diffuser screen from a plurality of locations, thereby forming the 3D image. The aerogel can use the projection device described as applicable to either the spinning diffusive screen or the circular diffuser screen.

公开(公告)号：US5262979A

公开(公告)日：1993-11-16

申请号：US747059

申请日：1991-08-19

申请人： Tien-Hsin Chao

发明人： Tien-Hsin Chao

IPC分类号： G06E3/00 ,  G11C15/00

CPC分类号： G06E3/005

摘要： An associative optical memory including an input SLM in the form of an edge enhanced LCLV and a pair of memory SLMs in the form of LCTVs forms a matrix array of an input image which is cross correlated with a matrix array of stored images. The correlation product is detected and non-linearly amplified to illuminate a replica of the stored image array to select the stored image correlating with the input image. The LCLV is edge enhanced by reducing the bias frequency and voltage and rotating its orientation. The edge enhancement and non-linearity of the photodetection improves the orthogonality of the stored images. The illumination of the replicate stored image provides a clean stored image, uncontaminated by the image comparison process.

摘要翻译： 包括边缘增强LCLV形式的输入SLM和LCTV形式的一对存储器SLM的关联光学存储器形成与存储的图像的矩阵阵列交叉相关的输入图像的矩阵阵列。 相关乘积被检测和非线性放大以照亮存储的图像阵列的副本，以选择与输入图像相关的存储的图像。 LCLV通过降低偏置频率和电压并旋转其方向而进行边缘增强。 光检测的边缘增强和非线性提高了存储图像的正交性。 重复存储的图像的照明提供了清晰的存储的图像，通过图像比较处理未被污染。

公开(公告)号：US07639363B2

公开(公告)日：2009-12-29

申请号：US11518536

申请日：2006-09-07

申请人： Tien-Hsin Chao ,  Hanying Znod

发明人： Tien-Hsin Chao ,  Hanying Znod

IPC分类号： G01B9/02

CPC分类号： G01J3/4531 ,  G01J3/2823 ,  G01J3/447 ,  G01J3/4532

摘要： An Electro-Optic Imaging Fourier Transform Spectrometer (EOIFTS) for Hyperspectral Imaging is described. The EOIFTS includes an input polarizer, an output polarizer, and a plurality of birefringent phase elements. The relative orientations of the polarizers and birefringent phase elements can be changed mechanically or via a controller, using ferroelectric liquid crystals, to substantially measure the spectral Fourier components of light propagating through the EIOFTS. When achromatic switches are used as an integral part of the birefringent phase elements, the EIOFTS becomes suitable for broadband applications, with over 1 micron infrared bandwidth.

摘要翻译： 描述了用于高光谱成像的电光成像傅里叶变换光谱仪（EOIFTS）。 EOIFTS包括输入偏振器，输出偏振器和多个双折射相位元件。 偏振器和双折射相元件的相对取向可以机械地或通过使用铁电液晶的控制器来改变，以基本上测量通过EIOFTS传播的光的光谱傅立叶分量。 当消色差开关用作双折射相元件的组成部分时，EIOFTS适用于宽带应用，具有超过1微米的红外带宽。

公开(公告)号：US20070188838A1

公开(公告)日：2007-08-16

申请号：US11654197

申请日：2007-01-17

申请人： Tien-Hsin Chao ,  J. Cammack

发明人： Tien-Hsin Chao ,  J. Cammack

IPC分类号： G03H1/16

CPC分类号： G06K9/748 ,  G03H1/0005 ,  G03H1/16 ,  G03H2001/0066 ,  G03H2260/12 ,  G06K9/00046 ,  G06K9/76

摘要： We have designed, built and operated an innovative JTOC system utilizing a holographic photopolymer as the square law detector to record the holographic data for one-step correlation signal requisition in real time. The resultant high-resolution, high-speed JTOC is useful to perform real-time pattern recognition. An example application that has been demonstrated is fingerprint verification.

摘要翻译： 我们设计，制造和运行了一种创新的JTOC系统，利用全息光敏聚合物作为平方律检测器，实时记录一步相关信号采集的全息数据。 所得的高分辨率高速JTOC对于执行实时模式识别是有用的。 已经证明的示例应用程序是指纹验证。

公开(公告)号：US07251066B2

公开(公告)日：2007-07-31

申请号：US11462495

申请日：2006-08-04

申请人： Tien-Hsin Chao ,  Jay C. Hanan ,  George F. Reyes ,  Hanying Zhou

发明人： Tien-Hsin Chao ,  Jay C. Hanan ,  George F. Reyes ,  Hanying Zhou

IPC分类号： G03H1/26

CPC分类号： G03H1/265 ,  G03H1/26 ,  G03H2260/54 ,  G11B7/0065

摘要： A method, apparatus, and system provide the ability for storing holograms at high speed. A single laser diode emits a collimated laser beam to both write to and read from a photorefractice crystal. One or more liquid crystal beam steering spatial light modulators (BSSLMs) steer a reference beam, split from the collimated laser beam, at high speed to the photorefractive crystal.

摘要翻译： 方法，装置和系统提供高速存储全息图的能力。 单个激光二极管发射准直激光束，以便对光折射晶体进行写入和读取。 一个或多个液晶束转向空间光调制器（BSSLM）将从准直激光束分离的参考光束以高速转向光折变晶体。

公开(公告)号：US5376807A

公开(公告)日：1994-12-27

申请号：US46331

申请日：1993-04-07

申请人： Tsuen-Hsi Liu ,  Tien-Hsin Chao ,  Li-Jen Cheng

发明人： Tsuen-Hsi Liu ,  Tien-Hsin Chao ,  Li-Jen Cheng

IPC分类号： G06E3/00 ,  G06F15/336 ,  G06K9/64

CPC分类号： G06E3/003

摘要： A new type of optical correlator performs motion detection or background clutter suppression and correlation simultaneously in a single photorefractive crystal, and is useful for moving target identification and tracking and for stationary clutter rejection. The correlation is of the VanderLugt type and the motion detection or background clutter suppression is based on the erasing property of photorefractive crystals.

摘要翻译： 一种新型的光学相关器在单个光折变晶体中同时执行运动检测或背景杂波抑制和相关性，并且可用于移动目标识别和跟踪以及静态杂波抑制。 相关性为VanderLugt类型，运动检测或背景杂波抑制基于光折射晶体的擦除性质。

公开(公告)号：US5131055A

公开(公告)日：1992-07-14

申请号：US481013

申请日：1990-02-16

申请人： Tien-Hsin Chao

发明人： Tien-Hsin Chao

IPC分类号： G06K9/74 ,  G06N3/067

CPC分类号： G06K9/745 ,  G06N3/0675

摘要： An optical system for auto-associative and hetero-associative recall utilizing Hamming distance as the similarity measure between a binary input image vector V.sup.(k) and a binary image vector V.sup.(m) in a first memory array using an optical Exclusive-OR gate for multiplication of each of a plurality of different binary image vectors in memory by the input image vector. After integrating the light of each product V.sup.(k) .times.V.sup.(m), a shortest Hamming distance detection electronics module determines which product has the lowest light intensity and emits a signal that activates a light emitting diode to illuminate a corresponding image vector in a second memory array for display. That corresponding image vector is identical to the memory image vector V.sup.(m) in the first memory array for auto-associative recall or related to it, such as by name, for hetero-associative recall.

摘要翻译： 一种用于使用汉明距离的自相关和异相关调用的光学系统作为使用光学异或门的第一存储器阵列中的二进制输入图像矢量V（k）和二进制图像矢量V（m）之间的相似性度量 用于通过输入图像矢量乘以存储器中的多个不同的二进制图像矢量中的每一个。 在对每个乘积V（k）xV（m）进行积分后，最短的汉明距离检测电子模块确定哪个产品具有最低的光强度并且发出激活发光二极管以在第二个中发射对应的图像矢量的信号 用于显示的存储器阵列。 相应的图像矢量与用于自动关联召回的第一存储器阵列中的存储器图像矢量V（m）相同，例如通过名称与异相关召回相关。

公开(公告)号：US20070070354A1

公开(公告)日：2007-03-29

申请号：US11518536

申请日：2006-09-07

申请人： Tien-Hsin Chao ,  Hanying Znod

发明人： Tien-Hsin Chao ,  Hanying Znod

IPC分类号： G01B9/02

CPC分类号： G01J3/4531 ,  G01J3/2823 ,  G01J3/447 ,  G01J3/4532

摘要： An Electro-Optic Imaging Fourier Transform Spectrometer (EOIFTS) for Hyperspectral Imaging is described. The EOIFTS includes an input polarizer, an output polarizer, and a plurality of birefringent phase elements. The relative orientations of the polarizers and birefringent phase elements can be changed mechanically or via a controller, using ferroelectric liquid crystals, to substantially measure the spectral Fourier components of light propagating through the EIOFTS. When achromatic switches are used as an integral part of the birefringent phase elements, the EIOFTS becomes suitable for broadband applications, with over 1 micron infrared bandwidth.

摘要翻译： 描述了用于高光谱成像的电光成像傅里叶变换光谱仪（EOIFTS）。 EOIFTS包括输入偏振器，输出偏振器和多个双折射相位元件。 偏振器和双折射相元件的相对取向可以机械地或通过使用铁电液晶的控制器来改变，以基本上测量通过EIOFTS传播的光的光谱傅立叶分量。 当消色差开关用作双折射相元件的组成部分时，EIOFTS适用于宽带应用，具有超过1微米的红外带宽。