公开(公告)号：US07760408B2

公开(公告)日：2010-07-20

申请号：US12329600

申请日：2008-12-07

申请人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa ,  Yasumasa Iwamura ,  Yuzuru Yamakage

发明人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa ,  Yasumasa Iwamura ,  Yuzuru Yamakage

IPC分类号： G03H1/28 ,  G11B7/00

CPC分类号： G03H1/26 ,  G03H1/0465 ,  G03H1/265 ,  G11B7/0065 ,  G11B7/00772 ,  G11B7/08564 ,  G11B7/1362 ,  G11B7/1381

摘要： A hologram recording device for irradiating a recording beam (S) to a hologram recording medium (B) at a fixed incident angle (θs) and irradiating a reference beam (R) to an illuminated region (p) of the recording beam (S) by variably controlling an incident angle (θr) of the reference beam (R) on the hologram recording medium (B), whereby a hologram is recorded on the illuminated region (p) in multiple, includes at least a variable reflector (10) directing the reference beam (R) to the illuminated region by reflection and being swung around a predetermined axis (x) for changing the incident angle (θr) of the reference beam (R); and a light shield (11) being swung integrally with the variable reflector (10) for partially shielding the reference beam (R) so that a luminous flux diameter thereof becomes narrower as the incident angle (θr) becomes larger.

摘要翻译： 一种全息图记录装置，用于以固定的入射角（＆amp; s）向全息图记录介质（B）照射记录光束（S），并将参考光束（R）照射到记录光束的照明区域（p） S）通过可变地控制全息图记录介质（B）上的参考光束（R）的入射角（＆amp; t; r），由此全息图被记录在多个照明区域（p）上，至少包括可变反射器 （10）通过反射将参考光束（R）引导到照明区域，并围绕预定轴线（x）摆动，以改变参考光束（R）的入射角（θ; r）; 以及与所述可变反射体（10）整体摆动的遮光罩（11），用于部分地遮蔽所述参考光束（R），使得其光束直径随着所述入射角（Δθ）变大而变窄。

公开(公告)号：US07715074B2

公开(公告)日：2010-05-11

申请号：US12194804

申请日：2008-08-20

申请人： Hiroyasu Yoshikawa ,  Kouichi Tezuka ,  Kazushi Uno ,  Yasumasa Iwamura ,  Yuzuru Yamakage

发明人： Hiroyasu Yoshikawa ,  Kouichi Tezuka ,  Kazushi Uno ,  Yasumasa Iwamura ,  Yuzuru Yamakage

IPC分类号： G03H1/28

CPC分类号： G11B7/0065 ,  G03H1/16 ,  G03H1/26 ,  G11B7/1372

摘要： A holographic recorder can vary the optical distance between an object lens and a relay lens near the object lens. This arrangement allows defocus-multiplexing utilizing state variations in the laser beam when the beam reaches a storage medium.

摘要翻译： 全息记录器可以改变物镜附近的物镜和中继透镜之间的光学距离。 这种布置允许当光束到达存储介质时利用激光束中的状态变化进行散焦复用。

公开(公告)号：US07636185B2

公开(公告)日：2009-12-22

申请号：US12270614

申请日：2008-11-13

申请人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa ,  Yasumasa Iwamura ,  Yuzuru Yamakage

发明人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa ,  Yasumasa Iwamura ,  Yuzuru Yamakage

IPC分类号： G03H1/28 ,  G11B7/00

CPC分类号： G03H1/04 ,  G03H1/0465 ,  G03H1/265 ,  G03H2222/35 ,  G11B7/0065 ,  G11B7/00772 ,  G11B7/08564 ,  G11B7/128 ,  G11B7/1392

摘要： A hologram recorder records a hologram in a hologram recording medium by interference of a recording beam irradiated at a predetermined incident angle to the medium via a spatial light modulator incliningly in a predetermined direction with a reference beam irradiated incliningly in an opposite direction to the recording beam so that the beams crosses at a predetermined crossing angle. The recorder includes a beam modulator for converting a Gaussian-beam having a Gaussian-distribution of intensity into a parallel beam having an intensity distribution tending to be uniform and allowing the parallel beam to travel to the spatial modulator as the recording beam. The Gaussian-beam has a center axis decentered from an optical axis of the beam modulator in a decentering direction including a directional component of the predetermined direction in which the recording beam is inclined or an opposite directional component thereto.

摘要翻译： 全息图记录器通过经由空间光调制器以预定方向倾斜地以与预定方向倾斜的参考光束以与记录光束相反的方向照射以预定入射角度照射的记录光束，将全息图记录在全息图记录介质中 使得光束以预定的交叉角度穿过。 记录器包括用于将具有强度高斯分布的高斯光束转换成具有倾向均匀的强度分布的并行光束并允许平行光作为记录光束行进到空间调制器的光束调制器。 高斯光束具有从波束调制器的光轴偏心的中心轴，该偏心方向包括记录光束倾斜的预定方向的方向分量或与其相反的方向分量。

公开(公告)号：US20090279153A1

公开(公告)日：2009-11-12

申请号：US12507643

申请日：2009-07-22

申请人： Yasumasa Iwamura ,  Koichi Tezuka ,  Hiroyasu Yoshikawa ,  Kazushi Uno ,  Yuzuru Yamakage

发明人： Yasumasa Iwamura ,  Koichi Tezuka ,  Hiroyasu Yoshikawa ,  Kazushi Uno ,  Yuzuru Yamakage

IPC分类号： G03H1/26

CPC分类号： G11B7/0065 ,  G11B7/00781

摘要： The hologram recording/reproducing apparatus is for recording a hologram by emitting a recording beam (S) modulated by a spatial light modulator and a reference beam (R) having a same wavelength as the recording beam onto a hologram recording medium (B) so that the beams overlap each other with polarization direction (p) of the beams being matched to interfere with each other, and for reproducing the hologram by exposing the hologram recording medium storing the hologram to the reference beam to generate diffracted light and receiving the diffracted light by an imaging device. The spatial light modulator is controlled so as to form a data area (H0) corresponding to information to be recorded and a plurality of mark areas (H1) for detecting a position of the data area in the hologram recording medium (B) in recording of the hologram. The mark areas (H1) are formed at positions not to be overlapped by a beam scattering region which may be generated along a polarizing direction (p) of the reference beam on an outward side of the data area (H0).

摘要翻译： 全息记录/再现装置用于通过将由空间光调制器调制的记录光束（S）和与记录光束具有相同波长的参考光束（R）发射到全息图记录介质（B）上来记录全息图，使得 光束彼此重叠，偏振方向（p）相互干扰，并且通过将存储全息图的全息图记录介质曝光到参考光束以再现全息图，以产生衍射光并通过以下方式接收衍射光 成像装置。 控制空间光调制器以形成对应于要记录的信息的数据区域（H0）和用于在记录中检测全息图记录介质（B）中的数据区域的位置的多个标记区域（H1） 全息图。 标记区域（H1）形成在与数据区域（H0）的外侧上的参考光束的偏振方向（p）不同的光束散射区域不重叠的位置处。

公开(公告)号：US20090122374A1

公开(公告)日：2009-05-14

申请号：US12270614

申请日：2008-11-13

申请人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa ,  Yasumasa Iwamura ,  Yuzuru Yamakage

发明人： Kazushi Uno ,  Kouichi Tezuka ,  Hiroyasu Yoshikawa ,  Yasumasa Iwamura ,  Yuzuru Yamakage

IPC分类号： G03H1/04

CPC分类号： G03H1/04 ,  G03H1/0465 ,  G03H1/265 ,  G03H2222/35 ,  G11B7/0065 ,  G11B7/00772 ,  G11B7/08564 ,  G11B7/128 ,  G11B7/1392

摘要： A hologram recorder (A) records a hologram in a hologram recording medium (B) by interference of a recording beam (S) irradiated at a predetermined incident angle to the medium (B) via a spatial light modulator (2) incliningly in a predetermined direction with a reference beam (R) irradiated incliningly in an opposite direction to the recording beam (S) so that the beams (S,R) crosses at a predetermined crossing angle. The recorder includes a beam modulator (1) for converting a Gaussian-beam having a Gaussian-distribution of intensity into a parallel beam having an intensity distribution tending to be uniform and allowing the parallel beam to travel to the spatial modulator (2) as the recording beam (S). The Gaussian-beam has a center axis (Gs) decentered from an optical axis (1A) of the beam modulator (1) in a decentering direction including a directional component of the predetermined direction in which the recording beam (S) is inclined or an opposite directional component thereto.

摘要翻译： 全息记录器（A）通过经由空间光调制器（2）以预定的角度倾斜地以预定的入射角照射到记录介质（B）的记录光束（S），将全息图记录在全息记录介质（B）中 方向与以与记录光束（S）相反的方向倾斜地照射的参考光束（R），使得光束（S，R）以预定的交叉角度交叉。 记录器包括用于将具有强度的高斯分布的高斯光束转换成具有趋于均匀的强度分布的并行光束的光束调制器（1），并且允许并行光束作为所述空间调制器（2）行进到空间调制器 记录光束（S）。 高斯光束具有从波束调制器（1）的光轴（1A）偏心的中心轴（Gs），该偏心方向包括记录光束（S）倾斜的预定方向的方向分量或 与其相反的方向分量。

公开(公告)号：US20090316237A1

公开(公告)日：2009-12-24

申请号：US12548017

申请日：2009-08-26

申请人： Kazushi Uno ,  Yasumasa Iwamura

发明人： Kazushi Uno ,  Yasumasa Iwamura

IPC分类号： G03H1/04

CPC分类号： G03H1/02 ,  G03H2001/0212 ,  G03H2222/22 ,  G03H2222/35 ,  G11B7/0065 ,  G11B7/1381 ,  G11B7/1398 ,  G11B2007/13727

摘要： A hologram recorder (A) which records holograms by causing a recording beam (P) and a reference beam (S) to interfere with each other in a hologram recording media (B), includes an incident-side and an emitting-side lenses (3a, 3b) provided as a compound lens disposed in a laser beam path between a light source (1) and a beam separator (7); and an aperture stop (5) provided to limit a light flux diameter between the incident-side and emitting-side lenses (3a, 3b). The aperture stop (5) is disposed at a position biased toward the incident-side lens (3a) as viewed from an incident-side focal position of the emitting-side lens (3b).

摘要翻译： 通过使记录光束（P）和参考光束（S）在全息记录介质（B）中相互干扰来记录全息图的全息记录器（A）包括入射侧和发射侧透镜 3a，3b），设置在光源（1）和光束分离器（7）之间的激光束路径中的复合透镜; 以及设置用于限制入射侧和发射侧透镜（3a，3b）之间的光束直径的孔径光阑（5）。 从发光侧透镜（3b）的入射侧聚焦位置观察，孔径光阑（5）配置在朝向入射侧透镜（3a）偏置的位置。

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。

公开(公告)号：US20090207714A1

公开(公告)日：2009-08-20

申请号：US12432433

申请日：2009-04-29

申请人： Yuzuru Yamakage ,  Kazushi Uno ,  Hiroyasu Yoshikawa

发明人： Yuzuru Yamakage ,  Kazushi Uno ,  Hiroyasu Yoshikawa

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G03H1/04 ,  G03H1/0465 ,  G11B7/1374

摘要： An optical element for recording/reproducing a hologram condenses a recording beam into a hologram recording medium, while also allowing the passage of a reproduction beam from the hologram recording medium in the reverse direction with respect to the recording beam. The optical element is configured to converge, upon incidence of a parallel beam flux as the recording beam, an on-axis beam and off-axis beams contained in the parallel beam flux onto different image points. A beam condensing spot of the on-axis beam and the off-axis beams is formed, with a predetermined diameter at a predetermined position on an optical axis on a way to the image points. At least one of the on-axis beam and the off-axis beams has a diameter, at the predetermined position on the optical axis, smaller than the predetermined diameter of the beam condensing spot.

摘要翻译： 用于记录/再现全息图的光学元件将记录光束聚合成全息图记录介质，同时还允许来自全息图记录介质的再现光束相对于记录光束反方向通过。 光学元件被配置成在作为记录光束的平行光束入射时会聚在包含在平行光束中的轴上光束和离轴光束到不同的图像点上。 在通向图像点的路上，在轴上的预定位置处形成轴上光束和离轴光束的光束聚光点，其具有预定直径。 轴上光束和离轴光束中的至少一个在光轴上的预定位置处具有小于光束聚光点的预定直径的直径。

公开(公告)号：US20090128876A1

公开(公告)日：2009-05-21

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： G03H1/04

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 满足以下公式：