公开(公告)号：US07616362B2

公开(公告)日：2009-11-10

申请号：US11359190

申请日：2006-02-22

申请人： Hiroyasu Yoshikawa ,  Kouichi Tezuka ,  Kazushi Uno

发明人： Hiroyasu Yoshikawa ,  Kouichi Tezuka ,  Kazushi Uno

IPC分类号： G03H1/00 ,  G03H1/10 ,  G03H1/22

CPC分类号： G11B7/0065 ,  G03H1/22 ,  G03H1/2286 ,  G03H2001/2223 ,  G03H2001/2289 ,  G11B7/00772 ,  G11B7/08564 ,  G11C13/042

摘要： A hologram recording and reproducing apparatus includes a movable galvanomirror, a mirror controller and a reproduction unit. The galvanomirror guides a reference beam toward a hologram recording medium and changes the incident angle of the reference beam. The mirror controller causes the galvanomirror to move for adjusting the incident angle to a predetermined angle for hologram recording. In reproducing the recorded information, the mirror controller causes the galvanomirror to move, so that the incident angle continuously changes within a predetermined range including the predetermined angle. The reproduction unit receives a detection signal from an optical detector while the incident angle changes continuously. The detection signal corresponds to the intensity of a reflected beam from the hologram recording medium. The reproduction unit reproduces the recorded information, based on the detection signal, when the intensity of the reflected beam is over a predetermined level or reaches the maximum.

摘要翻译： 全息图记录和再现装置包括可动电流镜，反射镜控制器和再现单元。 电流镜将参考光束引向全息图记录介质并改变参考光束的入射角。 反射镜控制器使得电镜镜移动以将入射角度调整到预定角度以进行全息记录。 在再现所记录的信息时，反射镜控制器使电流镜移动，使得入射角度在包括预定角度的预定范围内连续变化。 再现单元在入射角度连续变化的同时从光学检测器接收检测信号。 检测信号对应于来自全息图记录介质的反射光束的强度。 当反射光束的强度超过预定值或达到最大值时，再现单元基于检测信号再现所记录的信息。

公开(公告)号：US07515521B2

公开(公告)日：2009-04-07

申请号：US11355854

申请日：2006-02-15

申请人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa

发明人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/083 ,  G11B7/08564 ,  G11B7/0956

摘要： A hologram recording and reproducing apparatus minimizes reproduction errors by servo control on the tilting of a reference beam relative to a hologram recording medium. The apparatus includes an optical detector for servo control and an optical sensor for reproduction signal conversion. A pixel pattern generator generates, on a wave surface of the recording beam, a discretely distributed recording pixel pattern corresponding to the information to be recorded, and a specifically shaped and localized servo pixel pattern for the servo control. A beam splitter splits the reflected beam from the hologram recording medium into a reproduction beam directed to the optical detector for reproduction signal conversion and a servo beam directed to the optical detector for servo control. A servo controller controls the tilting of the reference beam relative to the hologram recording medium, based on an output signal from the servo control optical detector.

摘要翻译： 全息图记录和再现装置通过对参考光束相对于全息图记录介质的倾斜的伺服控制来最小化再现误差。 该装置包括用于伺服控制的光学检测器和用于再现信号转换的光学传感器。 像素图案发生器在记录光束的波面上产生与要记录的信息相对应的离散分布的记录像素图案，以及用于伺服控制的特定形状和局部的伺服像素图案。 分束器将来自全息图记录介质的反射光束分解成指向光学检测器的再现光束，用于再现信号转换，以及指向光学检测器的伺服光束进行伺服控制。 伺服控制器基于来自伺服控制光学检测器的输出信号来控制参考光束相对于全息图记录介质的倾斜。

公开(公告)号：US20060114792A1

公开(公告)日：2006-06-01

申请号：US11182265

申请日：2005-07-15

申请人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa

发明人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/128 ,  G11B7/0065 ,  G11B7/00745 ,  G11B7/00781 ,  G11B7/127

摘要： A disk-type hologram recording medium and a hologram recording and reproduction device utilizing such a recording medium are provided. The hologram recording and reproduction device includes a spatial optical modulator provided with a plurality of optical elements arranged in a grid-like form. These optical elements are divided into groups each associated with 1 bit of data for performing required light modulation. Thus, a special pattern exhibiting a greater S/N margin for 1 bit can be recorded in the recoding medium. During data recording or data reproduction, the special pattern is read from the recording medium, and based on the retrieved special pattern, fine adjustment by servo control is conducted for adjustment of tilting or focusing of the recording medium and for adjustment of the wavelength of the light emitted from the light source.

公开(公告)号：US20090279152A1

公开(公告)日：2009-11-12

申请号：US12506906

申请日：2009-07-21

申请人： Yuzuru Yamakage ,  Kazushi Uno ,  Hiroyasu Yoshikawa

发明人： Yuzuru Yamakage ,  Kazushi Uno ,  Hiroyasu Yoshikawa

IPC分类号： G03H1/26

CPC分类号： G03H1/0402 ,  G03H1/16 ,  G03H2001/0413 ,  G11B7/083 ,  G11B7/1374 ,  G11B2007/13727

摘要： A hologram recording apparatus includes an objective lens (7) for illuminating a hologram recording medium (B) with a recording beam (S) in a manner such that the recording beam overlaps a reference beam, thereby performing multiple recording of holograms at a portion illuminated with the reference beam and the recording beam (S). The objective lens (7) includes at least one rotationally symmetric lens (7A, 7B), and at least one rotationally symmetric lens (7A) is so arranged that the lens optical axis is inclined with respect to the direction (S1) in which the recording beam (S) travels.

摘要翻译： 全息记录装置包括用记录光束（S）以记录光束与基准光束重叠的方式照亮全息图记录介质（B）的物镜（7），从而在被照射的部分进行全息图的多次记录 具有参考光束和记录光束（S）。 物镜（7）包括至少一个旋转对称透镜（7A，7B），并且至少一个旋转对称透镜（7A）被布置成使得透镜光轴相对于其中的透镜光轴 记录光束（S）行进。

公开(公告)号：US07518974B2

公开(公告)日：2009-04-14

申请号：US11342835

申请日：2006-01-31

申请人： Yuzuru Yamakage ,  Toshikazu Kanaoka ,  Akiyoshi Uchida ,  Kazushi Uno ,  Hiroyasu Yoshikawa

发明人： Yuzuru Yamakage ,  Toshikazu Kanaoka ,  Akiyoshi Uchida ,  Kazushi Uno ,  Hiroyasu Yoshikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/00772 ,  G11B7/0065 ,  G11B7/1392

摘要： A recording and reproducing apparatus includes a light source to emit a laser beam, an information light beam irradiation unit to irradiate a medium with an information light beam, a reference light beam irradiation unit to irradiate the medium with a reference light beam so as to form a specific speckle pattern on the medium. The reference light beam irradiation unit comprises a diffusion board provided in the way of a light path through which the laser beam is passed and generating the reference light beam, a rotation controller to rotate the diffusion board, and an identification information detector to detect identification information previously formed on a surface of the diffusion board. The diffusion board comprises a plurality of encode storage regions in which different identification information is formed and a plurality of diffusion pattern generation regions specified by the identification information. A position of the diffusion board is controlled based on the detected identification information such that a desired diffusion pattern generation region comes to a position through which the laser beam is passed while the laser beam is outputted.

摘要翻译： 记录和再现装置包括发射激光束的光源，用信息光束照射介质的信息光束照射单元，参考光束照射单元，用参考光束照射介质以形成 介质上的特定斑点图案。 参考光束照射单元包括设置在激光束通过的光路的方式并产生参考光束的扩散板，旋转扩散板的旋转控制器和识别信息检测器，以检测识别信息 预先形成在扩散板的表面上。 扩散板包括形成有不同识别信息的多个编码存储区域和由识别信息指定的多个扩散图案生成区域。 基于检测到的识别信息来控制扩散板的位置，使得期望的扩散图案生成区域到达激光束输出的激光束通过的位置。

公开(公告)号：US20070091769A1

公开(公告)日：2007-04-26

申请号：US11342835

申请日：2006-01-31

申请人： Yuzuru Yamakage ,  Toshikazu Kanaoka ,  Akiyoshi Uchida ,  Kazushi Uno ,  Hiroyasu Yoshikawa

发明人： Yuzuru Yamakage ,  Toshikazu Kanaoka ,  Akiyoshi Uchida ,  Kazushi Uno ,  Hiroyasu Yoshikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/00772 ,  G11B7/0065 ,  G11B7/1392

摘要： A recording and reproducing apparatus includes a light source to emit a laser beam, an information light beam irradiation unit to irradiate a medium with an information light beam, a reference light beam irradiation unit to irradiate the medium with a reference light beam so as to form a specific speckle pattern on the medium. The reference light beam irradiation unit comprises a diffusion board provided in the way of a light path through which the laser beam is passed and generating the reference light beam, a rotation controller to rotate the diffusion board, and an identification information detector to detect identification information previously formed on a surface of the diffusion board. The diffusion board comprises a plurality of encode storage regions in which different identification information is formed and a plurality of diffusion pattern generation regions specified by the identification information. A position of the diffusion board is controlled based on the detected identification information such that a desired diffusion pattern generation region comes to a position through which the laser beam is passed while the laser beam is outputted.

摘要翻译： 记录和再现装置包括发射激光束的光源，用信息光束照射介质的信息光束照射单元，参考光束照射单元，用参考光束照射介质以形成 介质上的特定斑点图案。 参考光束照射单元包括设置在激光束通过的光路的方式并产生参考光束的扩散板，旋转扩散板的旋转控制器和识别信息检测器，以检测识别信息 预先形成在扩散板的表面上。 扩散板包括形成有不同识别信息的多个编码存储区域和由识别信息指定的多个扩散图案生成区域。 基于检测到的识别信息来控制扩散板的位置，使得期望的扩散图案生成区域到达激光束输出的激光束通过的位置。

公开(公告)号：US20060221419A1

公开(公告)日：2006-10-05

申请号：US11359087

申请日：2006-02-22

申请人： Hiroyasu Yoshikawa ,  Kouichi Tezuka ,  Kazushi Uno

发明人： Hiroyasu Yoshikawa ,  Kouichi Tezuka ,  Kazushi Uno

IPC分类号： G02B5/32

CPC分类号： G03H1/04 ,  G03H1/265 ,  G03H2223/13 ,  G03H2225/55 ,  G11B7/0065 ,  G11B7/128 ,  G11B7/1367 ,  G11B7/1381

摘要： A hologram recorder is provided for recording a hologram on a hologram recording medium by interference of a recording beam with a reference beam. The recorder includes a light source for outputting coherent light to be split into the recording beam and the reference beam; a spatial light modulator for modulating the recording beam into a form representing information to be recorded; an objective lens for outputting the recording beam; and a phase shift mask provided at a light entering surface of the spatial light modulator. The mask is configured to allow the recording beam to pass through, and also to partially shift the phase of the recording beam passing through the mask.

摘要翻译： 提供了一种全息记录器，用于通过记录光束与参考光束的干涉将全息图记录在全息图记录介质上。 记录器包括用于输出要分离成记录光束和参考光束的相干光的光源; 用于将记录光束调制成表示要记录的信息的形式的空间光调制器; 用于输出记录光束的物镜; 以及设置在空间光调制器的光入射表面处的相移掩模。 掩模被配置为允许记录光束通过，并且还部分地移动通过掩模的记录光束的相位。

公开(公告)号：US20060215529A1

公开(公告)日：2006-09-28

申请号：US11355854

申请日：2006-02-15

申请人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa

发明人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/083 ,  G11B7/08564 ,  G11B7/0956

摘要： A hologram recording and reproducing apparatus minimizes reproduction errors by servo control on the tilting of a reference beam relative to a hologram recording medium. The apparatus includes an optical detector for servo control and an optical sensor for reproduction signal conversion. A pixel pattern generator generates, on a wave surface of the recording beam, a discretely distributed recording pixel pattern corresponding to the information to be recorded, and a specifically shaped and localized servo pixel pattern for the servo control. A beam splitter splits the reflected beam from the hologram recording medium into a reproduction beam directed to the optical detector for reproduction signal conversion and a servo beam directed to the optical detector for servo control. A servo controller controls the tilting of the reference beam relative to the hologram recording medium, based on an output signal from the servo control optical detector.

公开(公告)号：US07719734B2

公开(公告)日：2010-05-18

申请号：US12356992

申请日：2009-01-21

申请人： Kazushi Uno ,  Koichi Tezuka ,  Hiroyasu Yoshikawa

发明人： Kazushi Uno ,  Koichi Tezuka ,  Hiroyasu Yoshikawa

IPC分类号： G03H1/00

CPC分类号： G11B7/1374 ,  G03H1/04 ,  G03H2240/51 ,  G03H2240/52 ,  G11B7/0065 ,  G11B7/1392

摘要： A hologram recording device records holograms by interference between an recording beam and a reference beam. The device includes an objective lens exhibiting a predetermined aberration. It is supposed that the laser beam applied to the beam splitter has an light intensity of 1, the recording beam and the reference beam emitted from the beam splitter have light intensities of P and 1−P, respectively, the optical magnification for the recording beam traveling from the beam splitter to the objective lens is a, and N pixels are used for modulation of the recording beam in the spatial light modulator. When the recording beam at the predetermined region has an amplitude 1/k times the amplitude of the reference beam, and the amplitude of the recording beam is X times as great as when there is no aberration, the predetermined aberration of the objective lens is determined to satisfy the formula: 0

摘要翻译： 全息记录装置通过记录光束和参考光束之间的干涉来记录全息图。 该装置包括具有预定像差的物镜。 假设施加到分束器的激光束的光强度为1，从分束器发射的记录光束和参考光束分别具有P和1-P的光强度，记录光束的光学倍率 从分束器传播到物镜是a，并且N个像素用于调制空间光调制器中的记录光束。 当预定区域的记录光束具有参考光束的振幅的1 / k倍的幅度，并且记录光束的幅度是当不存在像差时的X倍，所以确定物镜的预定像差 以满足公式：0

公开(公告)号：US07342697B2

公开(公告)日：2008-03-11

申请号：US11211910

申请日：2005-08-25

申请人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa

发明人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa

IPC分类号： G03H1/28

CPC分类号： G11B7/0065 ,  G03H1/0252 ,  G03H1/26 ,  G03H2250/42 ,  G11B7/00781 ,  G11B7/0938 ,  G11B7/24044 ,  G11B7/256

摘要： A hologram recording medium includes a hologram recording layer and a transparent substrate layer stacked on the hologram recording layer. The recording layer records an interference pattern of a recording beam and a reference beam. The transparent substrate layer has an inner surface facing the hologram recording layer, and this surface is formed with trace zones for guiding the recording beam and the reference beam in a prescribed guide direction. The trace zones have a higher reflectance than that of the remaining area in the inner surface of the transparent substrate layer.

摘要翻译： 全息记录介质包括全息图记录层和层叠在全息图记录层上的透明基板层。 记录层记录记录光束和参考光束的干涉图案。 透明基材层具有面向全息图记录层的内表面，并且该表面形成有用于沿规定的引导方向引导记录光束和参考光束的迹线区域。 迹线区域具有比透明基底层的内表面中剩余区域更高的反射率。