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公开(公告)号：US08295142B2
公开(公告)日：2012-10-23
申请号：US12763792
申请日：2010-04-20
IPC分类号： G11B7/00
CPC分类号： G11B7/1374 , G02B5/32 , G02B13/24 , G03H2223/17 , G11B7/0065 , G11B2007/13727
摘要： Provided is an objective lens for recording a hologram that condenses an recording beam on a hologram recording medium, and the objective lens is configured so as to condense, in the case where the recording beam is incident upon the objective lens in a form of a parallel beam flux, an on-axis beam flux and an off-axis beam flux contained in the parallel flux so as to form a beam waist in the hologram recording medium, and such that a distance between an off-axis image point of the off-axis beam flux that defines a largest field angle among the off-axis beam fluxes gradually converging ahead of the beam waist and the hologram recording medium becomes minimal.
摘要翻译： 提供了一种用于记录在全息图记录介质上聚合记录光束的全息图的物镜，并且在记录光束以平行的形式入射到物镜的情况下物镜被配置为冷凝 光束通量，包含在平行磁通中的轴上光束通量和离轴光束通量，以便在全息图记录介质中形成光束腰部，并且使得离焦光束的偏轴图像点之间的距离， 在束腰和全息图记录介质之前逐渐收敛的离轴光束之间限定最大场角的轴光束通量变得最小。
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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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4.发明授权公开(公告)号：US07583171B2
公开(公告)日：2009-09-01
申请号：US11082173
申请日：2005-03-16
CPC分类号： G11B11/10534 , G11B11/10554 , G11B17/30 , G11B33/1406 , G11B2005/0021
摘要： The present invention efficiently radiates heat generated by a coil while suppressing a decrease in the efficiency of generation of magnetic fields caused by an eddy current. The present invention includes a coil extending spirally in a plane and covered with a dielectric material, a magnetic substance provided parallel with the plane so as to overlap the coil, and a radiator extending in the plane so as to surround the coil and having projecting portions which project toward an outermost periphery of the coil and groove portions recessed in a direction opposite to that in which the projecting portions project, the projecting portions and the groove portions being alternately arranged, the radiator having a higher thermal conductivity than the magnetic substance.
摘要翻译： 本发明有效地辐射由线圈产生的热量，同时抑制由涡流引起的磁场的产生效率的降低。 本发明包括在平面内螺旋地覆盖并被电介质材料覆盖的线圈，与平面平行设置以与线圈重叠的磁性物质，以及在该平面内延伸以围绕线圈并具有突出部分 突出部分和凹槽部分交替地布置，该散热器具有比磁性物质更高的导热性。
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公开(公告)号：US20090129234A1
公开(公告)日：2009-05-21
申请号：US12338150
申请日：2008-12-18
IPC分类号： G11B7/00
CPC分类号： G03H1/26 , G03H1/265 , G11B7/0065 , G11B7/1362
摘要： A hologram recording device illuminates with a recording beam (S) a hologram recording medium (B), and illuminates with a reference beam (R) a region illuminated with the recording beam (p) while variably controlling the incident angle regarding the hologram recording medium (B) whereby holograms are recorded on the illuminated region (p) in multiple by interference of the recording beam (S) and the reference beam (R). The device includes an incident angle variable controller for variably controlling the incident angle of the reference beam (R) in a predetermined range. The hologram recording medium (B) has such characteristics that its recording sensitivity degrades as the incoming light amount increases. The incident angle variable controller changes the incident angle of the reference beam (R) from a larger angle to a smaller angle.
摘要翻译： 全息记录装置用全息图记录介质（B）的记录光束（S）照亮，并且用参考光（R）照射具有记录光束（p）的区域，同时可变地控制关于全息图记录介质的入射角 （B），借助于记录光束（S）和参考光束（R）的干涉，全息图被多次记录在照明区域（p）上。 该装置包括入射角度可变控制器，用于可变地控制参考光束（R）在预定范围内的入射角。 全息记录介质（B）具有随着入射光量增加而使其记录灵敏度降低的特性。 入射角可变控制器将参考光束（R）的入射角度从较大角度变化到更小的角度。
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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：US20080239923A1
公开(公告)日：2008-10-02
申请号：US12058158
申请日：2008-03-28
IPC分类号： G11B7/00
CPC分类号： G11B7/0065 , G03H1/02 , G03H1/0486 , G03H2001/0212 , G03H2222/31 , G03H2223/20 , G03H2240/52 , G11B7/1369 , G11B7/1398
摘要： A hologram recorder includes a light source for emitting a laser beam, a polarizing beam splitter for splitting the laser beam into a recording beam and a reference beam in accordance with a state of polarization, and a rotary polarizer located between the light source and the polarizing beam splitter. The rotary polarizer has the function of optical rotation, whereby a polarization component to be the recording beam is increased from the central portion toward the peripheral portion of the laser beam, and a polarization component to be the reference beam is decreased from the central portion toward the peripheral portion of the laser beam.
摘要翻译： 全息记录仪包括用于发射激光束的光源，用于将激光束分离成记录光束的偏振分束器和根据偏振态的参考光束，以及位于光源和偏振光之间的旋转偏振器 分束器。 旋转偏振器具有旋光功能，由此作为记录光束的偏振分量从激光的中心部分朝向周边部分增加，作为参考光束的偏振分量从中心部分向着 激光束的周边部分。
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公开(公告)号：US20080239421A1
公开(公告)日：2008-10-02
申请号：US12110107
申请日：2008-04-25
IPC分类号： G03H1/14
CPC分类号： G03H1/12 , G03H1/02 , G03H2001/0224 , G03H2001/2675 , G03H2223/13 , G03H2225/31 , G03H2225/55 , G11B7/0065 , G11B7/128 , G11B7/1362
摘要： A hologram recorder is provided, in which coherent light from a light source is split into a signal beam and a reference beam, and the signal beam is modulated by a spatial light modulator to be directed to a hologram recording medium, while the reference beam is directed to the hologram recording medium to overlap with the signal beam for recording a hologram on the hologram recording medium. The hologram recorder includes a beam phase modulator provided with a plurality of optical devices (20p, 20p′) each configured to assume one of two modes such as ON mode and OFF mode, the ON mode for causing the reference beam to be passed or reflected in a predetermined direction toward the hologram recording medium, the OFF mode for causing the reference beam to be blocked or directed in another direction other than the predetermined direction. Each optical device (20p, 20p′) provides a phase difference 0 or π. A phase modulation controller is also provided for individually controlling the optical devices (20p, 20p′) to cause each of the optical devices to assume the ON mode or the OFF mode, thereby modulating the reference beam into a beam having a predetermined phase pattern.
摘要翻译： 提供一种全息记录器，其中来自光源的相干光被分成信号光束和参考光束，信号光束由空间光调制器调制以被引导到全息图记录介质，而参考光束是 指向全息图记录介质以与用于在全息图记录介质上记录全息图的信号光束重叠。 所述全息图记录器包括一个光束相位调制器，该光束相位调制器设置有多个光学器件（20 p，20 p'），每个光学器件被配置为采用两种模式之一，如ON模式和OFF模式，ON模式用于使参考光束通过 或以朝向全息图记录介质的预定方向反射的方式，用于使参考光束被阻挡或指向除了预定方向之外的另一方向的OFF模式。 每个光学装置（20p，20p'）提供相位差0或π。 还提供了相位调制控制器，用于单独控制光学器件（20p，20p'）以使每个光学器件处于ON模式或OFF模式，从而将参考光束调制成具有预定相位的光束 模式。
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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：US20050105402A1
公开(公告)日：2005-05-19
申请号：US10845896
申请日：2004-05-14
IPC分类号： G11B11/105 , G11B11/00
CPC分类号： G11B11/10534 , G11B11/10554 , G11B11/1058
摘要： A magneto-optical head includes a focus lens for forming a light spot on a disk, a magnetic field generation coil arranged between the lens and the disk, and a heat conductor for conducting heat generated at the coil. The heat conductor is connected to a winding of the coil and extending radially outward from the coil.
摘要翻译： 磁光头包括用于在盘上形成光点的聚焦透镜，布置在透镜和盘之间的磁场产生线圈，以及用于传导线圈产生的热的导热体。 热导体连接到线圈的绕组并且从线圈径向向外延伸。
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