公开(公告)号：US20100060960A1

公开(公告)日：2010-03-11

申请号：US12538318

申请日：2009-08-10

申请人： Kenji Tanaka ,  Koji Takasaki ,  Kazutatsu Tokuyama ,  Atsushi Fukumoto ,  Hidenori Mori ,  Yoshiki Okamoto

发明人： Kenji Tanaka ,  Koji Takasaki ,  Kazutatsu Tokuyama ,  Atsushi Fukumoto ,  Hidenori Mori ,  Yoshiki Okamoto

IPC分类号： G03H1/12 ,  G03H1/22 ,  G03H1/14

CPC分类号： G03H1/22 ,  G03H1/2286 ,  G03H2240/52 ,  G11B7/0065 ,  G11B7/128 ,  G11B7/1395

摘要： A reproduction device includes a light-emitting unit that emits reference light and coherent light, which is generated so as to have uniform light intensity and uniform phase, onto a hologram recording medium on which data is recorded by an interference pattern of signal light and the reference light, and a light-attenuating unit that attenuates the light intensity of the coherent light.

摘要翻译： 一种再现装置包括发射单元，其发射参考光和相干光，其被产生以具有均匀的光强度和均匀相位到其上通过信号光的干涉图案记录数据的全息图记录介质上，并且 以及衰减相干光的光强度的光衰减单元。

公开(公告)号：US20100265808A1

公开(公告)日：2010-10-21

申请号：US12731306

申请日：2010-03-25

申请人： Akio YAMAKAWA ,  Yoshiki Okamoto ,  Kenji Tanaka ,  Kazutatsu Tokuyama ,  Koji Takasaki

发明人： Akio YAMAKAWA ,  Yoshiki Okamoto ,  Kenji Tanaka ,  Kazutatsu Tokuyama ,  Koji Takasaki

IPC分类号： G11B7/00

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

摘要： A hologram device includes: a light source for applying light to a hologram recording medium having a recording layer in which information recording is performed by interference fringes between signal light and reference light; a spatial modulation unit that generates the signal light and/or the reference light and generates a marker light in a predetermined position within an incident surface of the light from the light source by performing spatial light modulation on the light from the light source; a light applying unit that applies the light subjected to spatial light modulation by the spatial light modulation unit to the hologram recording medium via an objective lens; a light receiving unit that receives the light applied via the objective lens through the hologram recording medium; and a tilt detection unit that obtains a tilt error signal representing an error from an ideal angle of a tilt angle as an incident angle of the applied light via the objective lens to an information recording surface of the hologram recording medium based on a result of detection of an error between an ideal light reception position of the marker light in the light receiving unit and a real light reception position of the marker light by the light receiving unit.

摘要翻译： 全息装置包括：光源，用于向具有记录层的全息记录介质施加光，其中通过信号光与参考光之间的干涉条纹执行信息记录; 空间调制单元，通过对来自光源的光进行空间光调制，生成信号光和/或参考光，并通过对来自光源的光的入射表面中的预定位置产生标记光; 照射单元，经由物镜将经空间光调制单元经空间光调制的光施加到全息图记录介质上; 光接收单元，其接收通过所述全息图记录介质经由所述物镜施加的光; 以及倾斜检测单元，其基于检测结果，从倾斜角的理想角度获得表示误差的倾斜误差信号作为经由物镜的所施加的光的入射角到全息图记录介质的信息记录表面 在光接收单元中的标记光的理想光接收位置与由光接收单元的标记光的实际光接收位置之间的误差。

公开(公告)号：US08121010B2

公开(公告)日：2012-02-21

申请号：US12731306

申请日：2010-03-25

申请人： Akio Yamakawa ,  Yoshiki Okamoto ,  Kenji Tanaka ,  Kazutatsu Tokuyama ,  Koji Takasaki

发明人： Akio Yamakawa ,  Yoshiki Okamoto ,  Kenji Tanaka ,  Kazutatsu Tokuyama ,  Koji Takasaki

IPC分类号： G11B7/00

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

摘要： A hologram device includes: a light source for applying light to a hologram recording medium having a recording layer in which information recording is performed by interference fringes between signal light and reference light; a spatial modulation unit that generates the signal light and/or the reference light and generates a marker light in a predetermined position within an incident surface of the light from the light source by performing spatial light modulation on the light from the light source; a light applying unit that applies the light subjected to spatial light modulation by the spatial light modulation unit to the hologram recording medium via an objective lens; a light receiving unit that receives the light applied via the objective lens through the hologram recording medium; and a tilt detection unit that obtains a tilt error signal representing an error from an ideal angle of a tilt angle as an incident angle of the applied light via the objective lens to an information recording surface of the hologram recording medium based on a result of detection of an error between an ideal light reception position of the marker light in the light receiving unit and a real light reception position of the marker light by the light receiving unit.

摘要翻译： 全息装置包括：光源，用于向具有记录层的全息记录介质施加光，其中通过信号光与参考光之间的干涉条纹执行信息记录; 空间调制单元，通过对来自光源的光进行空间光调制，生成信号光和/或参考光，并通过对来自光源的光的入射表面中的预定位置产生标记光; 照射单元，经由物镜将经空间光调制单元经空间光调制的光施加到全息图记录介质上; 光接收单元，其接收通过所述全息图记录介质经由所述物镜施加的光; 以及倾斜检测单元，其基于检测结果，从倾斜角的理想角度获得表示误差的倾斜误差信号作为经由物镜的所施加的光的入射角到全息图记录介质的信息记录表面 在光接收单元中的标记光的理想光接收位置与由光接收单元的标记光的实际光接收位置之间的误差。

公开(公告)号：US08432591B2

公开(公告)日：2013-04-30

申请号：US12704587

申请日：2010-02-12

申请人： Akio Yamakawa ,  Yoshiki Okamoto ,  Kenji Tanaka ,  Kazutatsu Tokuyama ,  Koji Takasaki

发明人： Akio Yamakawa ,  Yoshiki Okamoto ,  Kenji Tanaka ,  Kazutatsu Tokuyama ,  Koji Takasaki

IPC分类号： G03H1/04

CPC分类号： G11B7/1275 ,  G11B7/00781 ,  G11B7/083 ,  G11B7/0908 ,  G11B7/128 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/24038 ,  G11B7/24044

摘要： A light irradiation device includes: a focus servo control unit including a light source, a spatial light modulating unit, and a light irradiating unit, for focus servo control so that the ideal focal position of light via an objective lens is such that distance between an ideal focal position and a hologram recording medium surface is smaller than distance from the surface to the lower layer side face of the recording layer, and the focal position of light via the objective lens is constant at the ideal focal position; an objective-lens/relay-lens distance adjusting unit to adjust distance between the objective lens and a relay lens close to the objective lens; a light reception unit to receive marker light; and a constant distance control unit to control the objective-lens/relay-lens distance adjusting unit based on error between the ideal position of the marker light, and the actual position of the marker light.

摘要翻译： 光照射装置包括：聚焦伺服控制单元，包括光源，空间光调制单元和光照射单元，用于聚焦伺服控制，使得经由物镜的光的理想焦点位置使得 理想焦点位置和全息图记录介质表面小于记录层的表面到下层侧面的距离，并且通过物镜的光的焦点位置在理想焦点位置处是恒定的; 物镜/中继透镜距离调节单元，用于调整物镜与靠近物镜的中继透镜之间的距离; 光接收单元，用于接收标记光; 以及恒定距离控制单元，其基于标记光的理想位置与标记光的实际位置之间的误差来控制物镜/中继透镜距离调节单元。

公开(公告)号：US20080144147A1

公开(公告)日：2008-06-19

申请号：US11947637

申请日：2007-11-29

申请人： Masaaki Hara ,  Mikio Sugiki ,  Kazutatsu Tokuyama ,  Mitsuru Toishi ,  Kenji Tanaka ,  Kazuyuki Hirooka

发明人： Masaaki Hara ,  Mikio Sugiki ,  Kazutatsu Tokuyama ,  Mitsuru Toishi ,  Kenji Tanaka ,  Kazuyuki Hirooka

IPC分类号： G03H1/02 ,  G03H1/12 ,  G03H1/22

CPC分类号： G03H1/22 ,  G03H2001/0441 ,  G03H2210/562 ,  G03H2223/12 ,  G03H2223/13 ,  G11B7/0065 ,  G11B7/083 ,  G11B7/128 ,  G11B7/1369

摘要： In a reproducing apparatus adapted to reproduce data recorded on a holographic recording medium, a reference light generator generates reference light for illuminating the holographic recording medium, and a coherent light generator generates coherent light having an intensity greater than the absolute value of a minimum amplitude of a reproduced image and having a phase equal to the phase of the reproduced image. An image signal acquisition unit senses the reproduced image produced by illuminating the holographic recording medium with the reference light and the coherent light, and acquires an image signal based on the reproduced image. A square root calculation unit calculates the square root of each of values constituting the image signal. A removal unit removes the component of the coherent light from the calculated square root, whereby the data recorded on the holographic recording medium is correctly reproduced.

摘要翻译： 在适于再现记录在全息记录介质上的数据的再现装置中，参考光发生器产生用于照亮全息记录介质的参考光，并且相干光发生器产生具有大于最小幅度绝对值的强度的相干光 再现图像并且具有等于再现图像的相位的相位。 图像信号获取单元通过用参考光和相干光来感测通过照射全息记录介质产生的再现图像，并且基于再现的图像获取图像信号。 平方根计算单元计算构成图像信号的每个值的平方根。 去除单元从计算的平方根去除相干光的分量，由此记录在全息记录介质上的数据被正确地再现。

公开(公告)号：US07835049B2

公开(公告)日：2010-11-16

申请号：US11947637

申请日：2007-11-29

申请人： Masaaki Hara ,  Mikio Sugiki ,  Kazutatsu Tokuyama ,  Mitsuru Toishi ,  Kenji Tanaka ,  Kazuyuki Hirooka

发明人： Masaaki Hara ,  Mikio Sugiki ,  Kazutatsu Tokuyama ,  Mitsuru Toishi ,  Kenji Tanaka ,  Kazuyuki Hirooka

IPC分类号： G03H1/20

CPC分类号： G03H1/22 ,  G03H2001/0441 ,  G03H2210/562 ,  G03H2223/12 ,  G03H2223/13 ,  G11B7/0065 ,  G11B7/083 ,  G11B7/128 ,  G11B7/1369

摘要： In a reproducing apparatus adapted to reproduce data recorded on a holographic recording medium, a reference light generator generates reference light for illuminating the holographic recording medium, and a coherent light generator generates coherent light having an intensity greater than the absolute value of a minimum amplitude of a reproduced image and having a phase equal to the phase of the reproduced image. An image signal acquisition unit senses the reproduced image produced by illuminating the holographic recording medium with the reference light and the coherent light, and acquires an image signal based on the reproduced image. A square root calculation unit calculates the square root of each of values constituting the image signal. A removal unit removes the component of the coherent light from the calculated square root, whereby the data recorded on the holographic recording medium is correctly reproduced.

摘要翻译： 在适于再现记录在全息记录介质上的数据的再现装置中，参考光发生器产生用于照亮全息记录介质的参考光，并且相干光发生器产生具有大于最小幅度绝对值的强度的相干光 再现图像并且具有等于再现图像的相位的相位。 图像信号获取单元通过用参考光和相干光来感测通过照射全息记录介质产生的再现图像，并且基于再现的图像获取图像信号。 平方根计算单元计算构成图像信号的每个值的平方根。 去除单元从计算的平方根去除相干光的分量，由此记录在全息记录介质上的数据被正确地再现。

公开(公告)号：US20100225985A1

公开(公告)日：2010-09-09

申请号：US12697639

申请日：2010-02-01

申请人： Atsushi Fukumoto ,  Kenji Tanaka ,  Masaaki Hara ,  Akio Yamakawa

发明人： Atsushi Fukumoto ,  Kenji Tanaka ,  Masaaki Hara ,  Akio Yamakawa

IPC分类号： G03H1/22

CPC分类号： G11B7/083 ,  G03H1/16 ,  G03H2225/32 ,  G03H2225/36 ,  G03H2225/60 ,  G11B7/0065 ,  G11B20/10009 ,  G11B2220/2504

摘要： A reproducing device including a light source that emits light for reproducing recorded information to a hologram recording medium subjected to recording of information by interference fringes of signal light and reference light, a light irradiating unit that generates the reference light for obtaining a reproduced image according to the recorded information and DC light having uniform intensity and phase, and irradiates the hologram recording medium with both the reference light and the DC light and with only the DC light, a light receiving unit that performs light-reception for the DC light and the reproduced image, and performs light-reception for the DC light, and a difference calculating unit that calculates a difference between an image signal obtained based on a light-reception result of the reproduced image and the DC light, and an image signal obtained based on a light-reception result of the DC light.

摘要翻译： 一种再生装置，其特征在于，包括：光源，其向通过信号光和基准光的干涉条纹记录信息的全息图记录媒体发出记录信息的光;照射单元，生成用于获得根据 所记录的信息和DC光具有均匀的强度和相位，并且仅用DC光照射具有参考光和DC光的全息图记录介质，对DC光进行光接收的光接收单元 图像，并且对DC光进行光接收;以及差分计算单元，其计算基于再现图像的光接收结果获得的图像信号与DC光之间的差异，以及基于 直流光的光接收结果。

公开(公告)号：US20100091349A1

公开(公告)日：2010-04-15

申请号：US12562660

申请日：2009-09-18

申请人： Terumasa Ito ,  Kenji Tanaka ,  Atsushi Fukumoto

发明人： Terumasa Ito ,  Kenji Tanaka ,  Atsushi Fukumoto

IPC分类号： G03H1/00

CPC分类号： G11B7/1365 ,  G03H2001/2276 ,  G03H2222/31 ,  G11B7/0065 ,  G11B7/128 ,  G11B7/1369 ,  G11B7/1395 ,  G11B7/24044

摘要： Disclosed herein is a recording and reproducing device including: a light source; an intensity modulating section; a polarization beam splitter; a selective polarization direction controlling section; a linearly polarized light/circularly polarized light converting section; and a driving controlling section.

摘要翻译： 本文公开了一种记录和再现装置，包括：光源; 强度调制部; 偏振分束器; 选择性偏振方向控制部; 线偏振光/圆偏振光转换部; 和驱动控制部。

公开(公告)号：US08077563B2

公开(公告)日：2011-12-13

申请号：US12107588

申请日：2008-04-22

申请人： Kenji Tanaka ,  Atsushi Fukumoto

发明人： Kenji Tanaka ,  Atsushi Fukumoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0065 ,  G11B7/00781 ,  G11B7/1275 ,  G11B7/1365 ,  G11B7/24038 ,  G11B7/24044

摘要： In a beam applying method, recording and reproducing operations are performed on an optical recording medium, in which a signal is recorded and reproduced by applying a beam thereto and which has a recording layer on which the signal is recorded, a quarter-wavelength plate formed below the recording layer, a polarizing plate formed further below the quarter-wavelength plate, and a reflecting film formed below the quarter-wavelength plate. The beam applying method includes the steps of; emitting a beam to be applied to the optical recording medium; and driving a quarter-wavelength plate inserted into an optical system serving to guide the emitted beam to the optical recording medium so that the optical axis direction thereof has a predetermined angle difference at the time of performing a recording operation and reproduction.

摘要翻译： 在光束施加方法中，在光记录介质上执行记录和再现操作，其中通过向其施加光束来记录和再现信号，并且其上记录有信号的记录层，形成四分之一波长的板 在记录层下方，形成在四分之一波长板之下的偏振片，以及形成在四分之一波长板下方的反射膜。 光束施加方法包括以下步骤： 发射要施加到光学记录介质的光束; 并且驱动插入到用于将发射的光束引导到光学记录介质的光学系统中的四分之一波长的板，使得其在执行记录操作和再现时具有预定的角度差。

公开(公告)号：US20090323496A1

公开(公告)日：2009-12-31

申请号：US12107556

申请日：2008-04-22

申请人： Kenji Tanaka ,  Atsushi Fukumoto

发明人： Kenji Tanaka ,  Atsushi Fukumoto

IPC分类号： G11B7/00

CPC分类号： G03H1/02 ,  G03H1/0256 ,  G03H2222/31 ,  G03H2250/41 ,  G03H2250/42 ,  G11B7/0065 ,  G11B7/1365

摘要： A beam applying method includes the steps of: rotationally driving an optical recording medium, in which a signal is recorded and reproduced by applying a beam thereto and which has a recording layer on which the signal is recorded, a polarization element formed below the recording layer, and a reflecting film formed below the polarization element; and applying a beam to the rotating optical recording medium through a half-wavelength plate that is rotationally driven with the rotation of the optical recording medium.

摘要翻译： 光束施加方法包括以下步骤：旋转驱动光记录介质，其中通过向其施加光束来记录和再现信号，并且其上记录有信号的记录层，形成在记录层下方的偏振元件 以及形成在所述偏振元件下方的反射膜; 以及通过经过光记录介质的旋转旋转驱动的半波长板将光束施加到旋转光记录介质上。