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公开(公告)号：US06674555B1
公开(公告)日：2004-01-06
申请号：US09599686
申请日：2000-06-22
IPC分类号： G03H108
CPC分类号： G11B7/1372 , G03H1/16 , G03H2210/22 , G03H2223/13 , G03H2225/55
摘要： Apparatus for holographic recording of information includes a lens or lens system, referred to here as the “FT lens,” situated in such a way that light from an object beam enters the FT lens after passing through an object, and light leaving the FT lens impinges on a recording medium situated at a Fourier transform plane of the object with respect to the FT lens. Disclosed apparatus includes a phase element effectively juxtaposed with the object, in which the phase element is effective for redistributing object-beam intensity in the Fourier transform plane, and the phase element has a correlation length greater than a maximum pixel side length associated with the object. Disclosed apparatus includes an optical element or optical system, referred to here as a “power optic,” that adds convergence or divergence to the object beam before the object beam enters the FT lens.
摘要翻译： 用于信息全息记录的装置包括一个这里称为“FT透镜”的透镜或透镜系统，这些透镜或透镜系统以这样的方式设置，使得来自物体光的光在通过物体后进入FT透镜，并且离开FT透镜的光 撞击位于物体相对于FT透镜的傅里叶变换平面的记录介质上。 公开的装置包括与物体并排的相位元件，其中相位元件有效地用于在傅里叶变换平面中重新分配物体光束强度，并且相位元件具有大于与物体相关联的最大像素边长度的相关长度 。 公开的装置包括一种光学元件或光学系统，这里称为“功率光学器件”，其在对象光束进入FT透镜之前将对象光束增加会聚或发散。
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公开(公告)号：US6163391A
公开(公告)日：2000-12-19
申请号：US113634
申请日：1998-07-10
CPC分类号： G11B7/1372 , G03H1/16 , G03H2210/22 , G03H2223/13 , G03H2225/55
摘要： We disclose apparatus for holographic recording of information. The apparatus includes a lens or lens system, referred to here as the "FT lens," situated in such a way that light from an object beam enters the FT lens after passing through an object, and light leaving the FT lens impinges on a recording medium situated at a Fourier transform plane of the object with respect to the FT lens. In certain aspects of the invention, the apparatus includes a phase element effectively juxtaposed with the object, the phase element is effective for redistributing object-beam intensity in the Fourier transform plane, and the phase element has a correlation length greater than a maximum pixel side length associated with the object. In certain other aspects of the invention, the apparatus includes an optical element or optical system, referred to here as a "power optic," that adds convergence or divergence to the object beam before the object beam enters the FT lens.
摘要翻译： 我们公开了全息记录信息的设备。 该装置包括这样称为“FT透镜”的透镜或透镜系统，该透镜或透镜系统以这样的方式设置，使得来自物体光的光在穿过物体后进入FT透镜，并且离开FT透镜的光照射在记录上 介质位于物体相对于FT透镜的傅里叶变换平面。 在本发明的某些方面，所述装置包括与所述物体有效并列的相位元件，所述相位元件对于在所述傅里叶变换平面中重新分配物体光束强度是有效的，并且所述相位元素具有大于最大像素侧的相关长度 与对象相关的长度。 在本发明的某些其它方面，该装置包括一个光学元件或光学系统，这里称为“功率光学器件”，其在对象光束进入FT透镜之前将对象光束的会聚或发散增加。
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3.发明授权Process for holography using reference beam having correlated phase content 有权使用具有相关相位含量的参考光束进行全息术的方法公开(公告)号：US06191875B1
公开(公告)日：2001-02-20
申请号：US09363336
申请日：1999-07-29
IPC分类号： G03H112
CPC分类号： G11C13/042 , G03H2001/2675
摘要： An improved process for holography is provided, in which the reference beam used for storage and readout has a correlated phase content. In particular, it was found that reference beams having random phase content limited the attainable storage density and the accuracy of readout of stored holograms due to uncontrolled fluctuations in the correlation selectivity. By contrast, a reference beam having correlated phase content provides accurate shift selectivity, the ability to tailor the reference beam spectrum to minimize crosstalk between neighboring holograms, and mitigation of limitations inherent in the holographic system or holographic medium. Improved storage density and readout accuracy are thereby attained.
摘要翻译： 提供了一种用于全息术的改进方法，其中用于存储和读出的参考光束具有相关的相位内容。 特别地，发现具有随机相位含量的参考光束由于相关选择性的不受控制的波动而限制了可获得的存储密度和存储的全息图的读出精度。 相反，具有相关相位内容的参考光束提供精确的偏移选择性，定制参考光束光谱以最小化相邻全息图之间的串扰的能力以及全息系统或全息介质中固有的限制的减轻。 由此可以获得改善的存储密度和读出精度。
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公开(公告)号：US5838467A
公开(公告)日：1998-11-17
申请号：US868406
申请日：1997-06-03
IPC分类号： G03H1/22 , G03H1/02 , G03H1/26 , G11B7/0065 , G03H1/04
CPC分类号： G03H1/22 , G03H1/02 , G03H1/2286 , G03H2001/0212 , G03H2222/31 , G03H2240/15 , G11B7/0065
摘要： A method for processing information stored in a holographic system, comprising the step of intersecting a reconstruction reference beam with a storage medium of a holographic system, the storage medium exhibiting birefringence at least partially due to coherent storage of information, wherein the reconstruction reference beam has a polarization at least 5.degree. different from the polarization exhibited by a storage reference beam during storage information in the storage medium.
摘要翻译： 一种用于处理存储在全息系统中的信息的方法，包括将重建参考光束与全息系统的存储介质相交的步骤，所述存储介质至少部分地由于信息的相干存储而呈现双折射，其中重建参考光束具有 在存储介质中的存储信息期间与存储参考光束显示的极化不同的偏振至少5°。
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5.发明授权System and method for steering focal plane data using cylindrical coordinates to access data locations in a holographic memory 失效使用圆柱坐标转向焦平面数据以访问全息存储器中的数据位置的系统和方法
公开(公告)号：US5835470A
公开(公告)日：1998-11-10
申请号：US881572
申请日：1997-06-24
CPC分类号： G11B7/08576 , G11B7/0065
摘要： Systems and methods for steering a complex, spatially-modulated incident beam of coherent light to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) a reflective element, locatable proximate a first focal plane of the incident beam, (2) a rotational steering mechanism, coupled to the reflective element, that orients the reflective element according to a desired rotational angle to steer the incident beam in a desired direction and (3) a refractive element that refracts the beam reflected from the reflective element to create a second focal plane for the beam, the HMC locatable proximate the second focal plane and rotatable about an axis of a plane thereof to receive the beam at a location thereon that is a function of the desired direction and an angular position of the HMC.
摘要翻译： 用于控制相干光的复杂的空间调制入射光束以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 其中一个系统包括：（1）可接近入射光束的第一焦平面定位的反射元件，（2）耦合到反射元件的旋转转向机构，其将反射元件根据期望的旋转角度定向到 引导所述入射光束在所需方向上并且（3）折射元件，其折射从所述反射元件反射的光束以产生用于所述光束的第二焦平面，所述HMC可邻近所述第二焦平面定位并可围绕平面的轴线旋转 以在其上的位置处接收作为所述HMC的期望方向和角度位置的函数的位置。
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公开(公告)号：US06388779B1
公开(公告)日：2002-05-14
申请号：US09553512
申请日：2000-04-20
IPC分类号： G03H116
CPC分类号： G11C13/042 , G03H1/0486 , G03H2260/12 , G11B7/0065
摘要： The invention involves a holographic system containing a photopolymer-type storage medium located in the system's optical path, where the medium is rotated around a first axis such that the surface of the medium is in a non-orthogonal relationship with the optical path, and a spatial light modulator also located in the optical path, where the modulator is rotated around a second axis that is substantially orthogonal to the first axis, and wherein the surface of the modulator is in a non-orthogonal relationship with the optical path. This arrangement compensates for at least a portion of aberration introduced by the photopolymer media, thereby allowing presentation of a flatter, more focused, and less distorted image at the sensor.
摘要翻译： 本发明涉及一种包含位于系统光路中的光聚合物型存储介质的全息系统，其中介质围绕第一轴旋转，使得介质的表面与光路呈非正交关系，并且 空间光调制器也位于光路中，其中调制器围绕基本上与第一轴正交的第二轴旋转，并且其中调制器的表面与光路呈非正交关系。 该布置补偿由光聚合物介质引入的至少一部分像差，从而允许在传感器处呈现更平坦，更聚焦和更少失真的图像。
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7.发明授权System and method for precessing an optical path using cylindrical coordinates to access data locations in a holographic memory 失效用于使用圆柱坐标进入光路以访问全息存储器中的数据位置的系统和方法
公开(公告)号：US5822263A
公开(公告)日：1998-10-13
申请号：US881866
申请日：1997-06-24
IPC分类号： G02B26/08 , G11B7/0065 , G11B7/09 , G11C13/04
CPC分类号： G11B7/0065
摘要： Systems and methods for steering an optical path to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) a reflective element, locatable proximate a first focal plane of a complex, spatially-modulated incident beam of light, (2) a polar steering mechanism, coupled to the reflective element, that orients the reflective element according to desired tilt and precession angles to steer the incident beam in a desired direction and (3) a refractive element that refracts the beam reflected from the reflective element to create a second focal plane for the beam, the HMC locatable proximate the second focal plane to receive the beam at a location thereon that is a function of the desired direction.
摘要翻译： 用于转向光路以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 其中一个系统包括：（1）反射元件，可邻近复杂的空间调制入射光束的第一焦平面定位;（2）耦合到反射元件的极性转向机构，其将反射元件定向 根据所需的倾斜角度和进动角度将所述入射光束转向所需方向，以及（3）折射元件，其折射从所述反射元件反射的光束以产生所述光束的第二焦平面，所述HMC可邻近所述第二焦平面定位 以在其上的作为期望方向的函数的位置处接收光束。
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公开(公告)号：US06614566B1
公开(公告)日：2003-09-02
申请号：US09588908
申请日：2000-06-07
IPC分类号： G03H128
CPC分类号： G03H1/26 , G11B7/0065 , G11B7/013
摘要： The invention relates to a skip-sorted spatial multiplexing holographic storage technique that addresses the problems of cross-talk, image distortions, and physical change of the medium encountered in current recording processes in which photopolymer media are used. The skip-sorted technique involves storing holograms in layers of arrays, such that a substantially uniform background exposure is provided for subsequent layers.
摘要翻译： 本发明涉及一种跳过排序的空间复用全息存储技术，其解决了使用光聚合物介质的当前记录过程中遇到的介质的串扰，图像失真和物理变化的问题。 跳过排序的技术涉及将全息图存储在阵列层中，使得为后续层提供基本均匀的背景曝光。
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9.发明授权System and method for steering focal plane data to access data locations in a holographic memory 失效用于转向焦平面数据以访问全息存储器中的数据位置的系统和方法
公开(公告)号：US6061154A
公开(公告)日：2000-05-09
申请号：US881540
申请日：1997-06-24
CPC分类号： G11B7/0065 , G11C13/042 , G11B7/135
摘要： Systems and methods for steering a complex, spatially-modulated incident beam of coherent light to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) a reflective element, locatable proximate a first focal plane of the incident beam, (2) a rotational steering mechanism, coupled to the reflective element, that orients the reflective element according to a desired rotational angle to steer the incident beam in a desired direction and (3) a refractive element that refracts the beam reflected from the reflective element to create a second focal plane for the beam, the HMC locatable proximate the second focal plane to receive the beam at a location thereon that is a function of the desired direction.
摘要翻译： 用于控制相干光的复杂的空间调制入射光束以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 其中一个系统包括：（1）可接近入射光束的第一焦平面定位的反射元件，（2）耦合到反射元件的旋转转向机构，其将反射元件根据期望的旋转角度定向到 使所述入射光束沿所需方向转向，并且（3）折射元件，其折射从所述反射元件反射的光束以产生所述光束的第二焦平面，所述HMC可邻近所述第二焦平面定位，以在其上的位置处接收所述光束 这是所需方向的函数。
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10.发明授权System and method for steering Fresnel region data using cylindrical coordinates to access data locations in a holographic memory 失效使用圆柱坐标转向菲涅尔区域数据以访问全息存储器中的数据位置的系统和方法
公开(公告)号：US5973806A
公开(公告)日：1999-10-26
申请号：US206873
申请日：1998-12-08
CPC分类号： G11B7/1362 , G11B7/0065
摘要： Systems and methods for steering an optical path to gain access to data locations in a holographic memory cell (HMC). One of the systems includes: (1) first and second reflective elements locatable to receive and reflect a complex, spatially-modulated incident beam of light, (2) a reflective element steering mechanism, coupled to the first and second reflective elements, that moves the first and second reflective elements to steer the incident beam in a desired direction and (3) an HMC rotating mechanism, couplable to the HMC, that rotates the HMC about an axis thereof, the reflective element steering mechanism and the HMC rotating mechanism cooperating to cause the incident beam to illuminate a location on a plane of the HMC that is a function of a movement of the first and second reflective elements and a rotational position of the HMC.
摘要翻译： 用于转向光路以获得对全息存储单元（HMC）中的数据位置的访问的系统和方法。 系统中的一个包括：（1）可定位成接收和反射复杂的空间调制的入射光束的第一和第二反射元件，（2）联接到第一和第二反射元件的反射元件转向机构，其移动 所述第一和第二反射元件用于沿着所需方向转向所述入射光束;以及（3）HMC旋转机构，其联接到所述HMC上，所述旋转机构使所述HMC绕其轴线旋转，所述反射元件转向机构和所述HMC旋转机构协作到 使得入射光束照亮HMC的平面上的位置，该位置是第一和第二反射元件的运动和HMC的旋转位置的函数。
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