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公开(公告)号：US07639586B2
公开(公告)日：2009-12-29
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.
摘要翻译： 提供了一种盘型全息图记录介质和使用这种记录介质的全息图记录和再现设备。 该全息图记录和再现装置包括一个空间光学调制器，该空间光学调制器设置有格栅形状的多个光学元件。 这些光学元件被分成各自与1位数据相关联的组，用于执行所需的光调制。 因此，在记录介质中可以记录出1比特的较大S / N余量的特殊图形。 在数据记录或数据再现期间，从记录介质读取特殊图案，并且基于检索到的特殊图案，进行通过伺服控制的微调以调节记录介质的倾斜或聚焦，并且用于调整记录介质的波长 从光源发出的光。
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公开(公告)号：US20080309999A1
公开(公告)日：2008-12-18
申请号：US12194804
申请日：2008-08-20
CPC分类号： G11B7/0065 , G03H1/16 , G03H1/26 , G11B7/1372
摘要： A holographic recorder (A1) can vary the optical distance between an object lens (8) and a relay lens (7b) near the object lens (8). This arrangement allows defocus-multiplexing utilizing state variations in the laser beam when the beam reaches a storage medium (B1).
摘要翻译： 全息记录器（A1）可以改变物镜（8）附近的物镜（8）和中继透镜（7b）之间的光学距离。 这种布置允许当光束到达存储介质（B1）时利用激光束中的状态变化进行散焦复用。
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公开(公告)号：US20060114536A1
公开(公告)日：2006-06-01
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。
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公开(公告)号：US07719735B2
公开(公告)日：2010-05-18
申请号：US12190873
申请日：2008-08-13
IPC分类号： G03H1/04
CPC分类号： G03H1/26 , G03H1/265 , G11B7/0065 , G11B7/00772 , G11B7/083
摘要： A hologram recorder (A) records holograms in a selected unit recording area (B1) of a hologram recording medium (B) by interference between a recording beam (Lr) which is applied vertically to the unit recording area (B1) and a reference beam (Lr) which is applied obliquely to the unit recording area (B1). The hologram recorder (A) includes a reference beam oblique applier (23A, 23B) for application of the reference beam (Lr) obliquely to the unit recording area (B1) by reflection, and a reference beam swing mechanism (30) for supporting the reference beam oblique applier (23A, 23B) and for swinging the reference beam oblique applier (23A, 23B) about a predetermined rotation axis which is perpendicular to an entering direction of the recording beam (Lw) that makes an entry into the unit recording area.
摘要翻译： 全息记录器（A）通过垂直于单元记录区域（B1）施加的记录光束（Lr）和参考光束（B）之间的干涉，将全息图记录在全息图记录介质（B）的选定单元记录区域（B1） （Lr）倾斜地施加到单元记录区域（B1）。 全息图记录器（A）包括用于通过反射将参考光束（Lr）倾斜地施加到单位记录区域（B1）的参考光束施加器（23A，23B），以及用于支撑 参考光束倾斜施加器（23A，23B），并且用于围绕与进入单位记录区域的记录光束（Lw）的进入方向垂直的预定旋转轴摆动参考光束施加器（23A，23B） 。
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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
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。
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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。
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公开(公告)号：US20080198429A1
公开(公告)日：2008-08-21
申请号：US12048935
申请日：2008-03-14
IPC分类号： G03H1/04
CPC分类号： G11B7/0065 , G03H1/04 , G03H1/0402 , G03H2222/35 , G03H2222/36 , G03H2225/24 , G11B7/083
摘要： A hologram recorder (A2) includes: a light source (10) for emitting a coherent beam; a spatial light modulator (20) provided with unit areas having a plurality of beam reflection elements (21) to reflect the beam from the light source (10) in a main direction as a signal beam or a cut-off direction; and a signal beam optical system (30, 31) for directing the signal beam to the hologram recording medium B. The recorder (A2) further includes: a wavefront reshaper (40, 41, 42) for condensing the beams thinned out in the cut-off direction by the beam reflection element (21) of the modulator (20), and reshaping the wavefront of the condensed beams; and a reference beam optical system (50, 51) for directing the beam from the reshaper (40, 41, 42) to the recording medium (B) as a reference beam to be shone in an overlapping manner with the signal beam.
摘要翻译： 全息记录器（A 2）包括：用于发射相干光束的光源（10）; 设置有具有多个光束反射元件（21）的单元区域的空间光调制器（20），用于在主方向上将来自光源（10）的光束作为信号光束或截止方向反射; 以及用于将信号光束引导到全息图记录介质B的信号光束光学系统（30,31）。记录器（A 2）还包括：波前整形器（40,41,42），用于将在 通过调制器（20）的光束反射元件（21）的截止方向，并且重新形成聚光束的波前; 以及用于将光束从所述整形器（40,41,42）引导到所述记录介质（B）的参考光束光学系统（50,51），作为要与所述信号光束重叠的参照光束照射。
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公开(公告)号：US07755819B2
公开(公告)日：2010-07-13
申请号：US12048935
申请日：2008-03-14
IPC分类号： G03H1/10
CPC分类号： G11B7/0065 , G03H1/04 , G03H1/0402 , G03H2222/35 , G03H2222/36 , G03H2225/24 , G11B7/083
摘要： A hologram recorder (A2) includes: a light source (10) for emitting a coherent beam; a spatial light modulator (20) provided with unit areas having a plurality of beam reflection elements (21) to reflect the beam from the light source (10) in a main direction as a signal beam or a cut-off direction; and a signal beam optical system (30, 31) for directing the signal beam to the hologram recording medium (B). The recorder (A2) further includes: a wavefront reshaper (40, 41, 42) for condensing the beams thinned out in the cut-off direction by the beam reflection element (21) of the modulator (20), and reshaping the wavefront of the condensed beams; and a reference beam optical system (50, 51) for directing the beam from the reshaper (40, 41, 42) to the recording medium (B) as a reference beam to be shone in an overlapping manner with the signal beam.
摘要翻译： 全息记录器（A2）包括：用于发射相干光束的光源（10）; 设置有具有多个光束反射元件（21）的单元区域的空间光调制器（20），用于在主方向上将来自光源（10）的光束作为信号光束或截止方向反射; 以及用于将信号光束引导到全息图记录介质（B）的信号光束光学系统（30,31）。 记录器（A2）还包括：波前整形器（40,41,42），用于通过所述调制器（20）的光束反射元件（21）将从所述截止方向变薄的光束聚集在一起，并且重新形成 聚光束; 以及用于将光束从所述整形器（40,41,42）引导到所述记录介质（B）的参考光束光学系统（50,51），作为要与所述信号光束重叠的参照光束照射。
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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。
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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.
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