公开(公告)号：US20070268539A1

公开(公告)日：2007-11-22

申请号：US11745931

申请日：2007-05-08

申请人： Mitsuru Toishi ,  Masaaki Hara ,  Kenji Tanaka ,  Koji Ishioka ,  Atsushi Fukumoto

发明人： Mitsuru Toishi ,  Masaaki Hara ,  Kenji Tanaka ,  Koji Ishioka ,  Atsushi Fukumoto

IPC分类号： G03H1/12

CPC分类号： G03H1/28 ,  G03H2001/2675 ,  G03H2225/60 ,  G11B7/00772 ,  G11B7/083

摘要： A holographic recording and reproducing apparatus is provided. The holographic recording and reproducing apparatus includes a signal-beam spatial light modulating unit that displays a signal beam pattern for a signal beam, a reference-beam spatial light modulating unit that displays a reference beam pattern for a reference beam, and a controller that controls the mode of the signal beam pattern and that of the reference beam pattern. The controller controls the modes of at least two signal beam patterns and the modes of at least two reference beam patterns. A first reference beam is made to interfere with a first signal beam based on first recording data to record the data as a first hologram in a predetermined area of the holographic recording medium. A second reference beam is made to interfere with a second signal beam based on second recording data to record the data as a second hologram such that the second hologram is superimposed on the first hologram.

摘要翻译： 提供全息记录和再现装置。 全息记录和再现装置包括：信号束空间光调制单元，其显示用于信号光束的信号光束图案;参考光束空间光调制单元，其显示用于参考光束的参考光束图案;以及控制器， 信号光束图案的模式和参考光束图案的模式。 控制器控制至少两个信号光束图案的模式和至少两个参考光束图案的模式。 基于第一记录数据使第一参考光束与第一信号光束相干扰，以在全息记录介质的预定区域中将数据记录为第一全息图。 基于第二记录数据使第二参考光束与第二信号光束相干以将数据记录为第二全息图，使得第二全息图叠加在第一全息图上。

公开(公告)号：US20070268538A1

公开(公告)日：2007-11-22

申请号：US11749571

申请日：2007-05-16

申请人： Koji Ishioka ,  Mikio Sugiki ,  Atsushi Fukumoto ,  Masaaki Hara

发明人： Koji Ishioka ,  Mikio Sugiki ,  Atsushi Fukumoto ,  Masaaki Hara

IPC分类号： G03H1/10

CPC分类号： G03H1/22 ,  G03H1/2286 ,  G11B7/005 ,  G11B7/0065 ,  G11B7/128

摘要： A holographic reconstruction apparatus is provided. The holographic reconstruction apparatus reconstructs recording data recorded on a holographic recording medium from diffracted light generated by emitting reference light from a laser light source to the holographic recording medium. The apparatus includes a spatial light modulator applying spatial modulation on a light beam to form a predetermined reference light pattern for generating the reference light; an array optical detector detecting the luminance of a reconstructed image generated by the diffracted light and generating reconstruction data based on the luminance; and a controller controlling the spatial light modulator to form, as the predetermined reference light pattern, a first reference light pattern and a second reference light pattern, which is a reversal of the first reference light pattern, and reconstructing the recording data on the basis of after-calculation reconstruction data according to a difference between first and second reconstruction data based on the first and second reference light patterns.

摘要翻译： 提供全息重建装置。 全息重建装置从由激光光源发出的参考光产生的衍射光全息记录介质上，记录在全息记录介质上记录的数据。 该装置包括空间光调制器，其对光束施加空间调制以形成用于产生参考光的预定参考光图案; 阵列光学检测器，检测由衍射光产生的重建图像的亮度，并基于亮度生成重建数据; 以及控制所述空间光调制器的控制器，作为所述预定参考光图案，形成作为所述第一参考光图案的反转的第一参考光图案和第二参考光图案，并且基于 根据第一和第二参考光图案，根据第一和第二重建数据之间的差异来计算后重建数据。

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：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：US20080310281A1

公开(公告)日：2008-12-18

申请号：US12107609

申请日：2008-04-22

申请人： Masaaki Hara ,  Kenji Tanaka ,  Atsushi Fukumoto ,  Kenjiro Watanabe

发明人： Masaaki Hara ,  Kenji Tanaka ,  Atsushi Fukumoto ,  Kenjiro Watanabe

IPC分类号： G11B7/00

CPC分类号： G11B7/00772 ,  G11B7/1369

摘要： A recording and reproducing apparatus includes a spatial-light-intensity modulating unit, a spatial-light-phase modulating unit, an optical system that transmits light and leads the light to a hologram recording medium, a converting unit that converts an input data sequence; an amplitude and phase controlling unit that controls, during recording, the spatial-light-intensity modulating unit and the spatial-light-phase modulating unit to generate a signal light and a reference light, and controls, during reproduction, light intensity of each of pixels in a reference light area and a signal light area and controls a phase of each of the pixels, an image-signal acquiring unit that receives the reproduced image and the DC light and obtains two kinds of image signals, a difference calculating unit that calculates a difference between the two kinds of image signals, and a decoding unit that decodes data formed by a combination of the two kinds of values.

摘要翻译： 记录和再现装置包括空间光强度调制单元，空间光相位调制单元，透光并将光引导到全息图记录介质的光学系统，转换单元，其转换输入数据序列; 幅度和相位控制单元，其在记录期间控制空间光强度调制单元和空间光相位调制单元以产生信号光和参考光，并且在再现期间控制每个的光强度 参考光区域中的像素和信号光区域，并且控制每个像素的相位;图像信号获取单元，接收再现图像和DC光，并获得两种图像信号;差分计算单元，其计算 两种图像信号之间的差异，以及对通过两种值的组合形成的数据进行解码的解码单元。

公开(公告)号：US20080080030A1

公开(公告)日：2008-04-03

申请号：US11862373

申请日：2007-09-27

申请人： Atsushi Fukumoto ,  Mikio Sugiki ,  Kenji Tanaka ,  Masaaki Hara ,  Kazuyuki Hirooka

发明人： Atsushi Fukumoto ,  Mikio Sugiki ,  Kenji Tanaka ,  Masaaki Hara ,  Kazuyuki Hirooka

IPC分类号： G03H1/00

CPC分类号： G11B7/0065 ,  G03H2223/13 ,  G03H2225/31 ,  G11B7/1367

摘要： A recording apparatus performing at least recording with respect to a hologram recording medium is disclosed. The recording medium includes: a light emitting means for emitting light to be radiated with respect to the hologram recording medium set at a prescribed position; a special light modulation means configured to be able to generate reference light and signal light to be radiated to the hologram recording medium by performing light intensity modulation to incident light in the unit of pixels; a phase modulation means for performing phase modulation to radiated light from the special light modulation means; and an optical system configured to guide light emitted from the light emitting means with respect to the hologram recording medium through the special modulation means and the phase modulation means.

摘要翻译： 公开了至少对全息图记录介质进行记录的记录装置。 记录介质包括：发光装置，用于发射相对于设置在规定位置的全息图记录介质辐射的光; 一种特殊的光调制装置，被配置为能够通过对以像素为单位的入射光进行光强度调制而产生将被照射到全息图记录介质的参考光和信号光; 相位调制装置，用于对来自特殊光调制装置的辐射光进行相位调制; 以及光学系统，被配置为通过专用调制装置和相位调制装置引导从发光装置相对于全息图记录介质发射的光。

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：US20090290471A1

公开(公告)日：2009-11-26

申请号：US12429883

申请日：2009-04-24

申请人： Kenji TANAKA ,  Atsushi Fukumoto ,  Masaaki Hara ,  Kazutatsu Tokuyama

发明人： Kenji TANAKA ,  Atsushi Fukumoto ,  Masaaki Hara ,  Kazutatsu Tokuyama

IPC分类号： G11B7/00

CPC分类号： G11B7/1369 ,  G11B7/0065 ,  G11B7/128 ,  G11B7/1381 ,  G11B7/1392

摘要： A recording and reproducing device performs recording and reproduction on a hologram recording medium on which data is recorded by the use of interference fringes formed by signal light and reference light. The device includes: a light generation device including a spatial light modulator which performs spatial light modulation on incident light, and generating the signal and reference lights in the recording and the reference light in the reproduction; an image sensor for receiving the incident light and obtaining a light reception signal; an optical system for guiding the signal and reference lights to the hologram recording medium and reproduction light to the image sensor; and a band limiting device inserted on a Fourier plane in an optical path of the optical system, and having a transmittance set to be lower in a central area thereof than in a peripheral area thereof, to perform band limitation on the incident light.

摘要翻译： 记录和再现装置在通过使用由信号光和参考光形成的干涉条纹记录数据的全息图记录介质上执行记录和再现。 该装置包括：发光装置，其包括对入射光进行空间光调制的空间光调制器，并且在再现中产生记录中的信号和参考光; 用于接收入射光并获得光接收信号的图像传感器; 用于将信号和参考光引导到全息图记录介质并将光再现到图像传感器的光学系统; 以及插入光学系统的光路中的傅立叶平面上的带限制装置，并且在其中心区域具有比在其周边区域更低的透射率，以对入射光进行带限制。

公开(公告)号：US07684097B2

公开(公告)日：2010-03-23

申请号：US11862373

申请日：2007-09-27

申请人： Atsushi Fukumoto ,  Mikio Sugiki ,  Kenji Tanaka ,  Masaaki Hara ,  Kazuyuki Hirooka

发明人： Atsushi Fukumoto ,  Mikio Sugiki ,  Kenji Tanaka ,  Masaaki Hara ,  Kazuyuki Hirooka

IPC分类号： G03H1/12 ,  G03H1/04

CPC分类号： G11B7/0065 ,  G03H2223/13 ,  G03H2225/31 ,  G11B7/1367

摘要： A recording apparatus performing at least recording with respect to a hologram recording medium is disclosed. The recording medium includes: a light emitting means for emitting light to be radiated with respect to the hologram recording medium set at a prescribed position; a spatial light modulation means configured to be able to generate reference light and signal light to be radiated to the hologram recording medium by performing light intensity modulation to incident light in the unit of pixels; a phase modulation means for performing phase modulation to radiated light from the spatial light modulation means; and an optical system configured to guide light emitted from the light emitting means with respect to the hologram recording medium through the spatial modulation means and the phase modulation means.

摘要翻译： 公开了至少对全息图记录介质进行记录的记录装置。 记录介质包括：发光装置，用于发射相对于设置在规定位置的全息图记录介质辐射的光; 空间光调制装置，其被配置为能够通过对以像素为单位的入射光进行光强度调制来产生将被照射到全息图记录介质的参考光和信号光; 相位调制装置，用于对来自空间光调制装置的辐射光进行相位调制; 以及光学系统，被配置为通过空间调制装置和相位调制装置引导从发光装置相对于全息图记录介质发射的光。

公开(公告)号：US20090219798A1

公开(公告)日：2009-09-03

申请号：US12357865

申请日：2009-01-22

申请人： Kenji TANAKA ,  Atsushi Fukumoto ,  Masaaki Hara

发明人： Kenji TANAKA ,  Atsushi Fukumoto ,  Masaaki Hara

IPC分类号： G11B7/00 ,  G03H1/04

CPC分类号： G03H1/02 ,  G03H2001/0224 ,  G03H2223/13 ,  G03H2225/31 ,  G03H2225/33 ,  G03H2225/55 ,  G11B7/0065 ,  G11B7/1275 ,  G11B7/128 ,  G11B7/24044

摘要： Disclosed is a reproduction method for a hologram recording medium on which information is recorded with interference fringes of signal light and reference light, including: generating, based on light from a first light source, the reference light and coherent light caused to have uniform amplitude and phase, and irradiating the hologram recording medium with the reference light and the coherent light, the hologram recording medium including a recording layer on which the information is recorded with the interference fringes of the signal light and the reference light, a first reflection film formed on a lower surface side of the recording layer, and a gap layer formed between the recording layer and the first reflection film; and receiving the coherent light and a reproduction image that corresponds to recording information and is obtained as reflection light from the hologram recording medium through light irradiation in the light irradiation step, and reproducing the information based on a result of the light received.

摘要翻译： 公开了一种全息图记录介质的再现方法，其上以信号光和参考光的干涉条纹记录信息，包括：基于来自第一光源的光，产生具有均匀振幅的参考光和相干光，以及 相位，并且用参考光和相干光照射全息图记录介质，全息图记录介质包括记录有信号光和参考光的干涉条纹的信息的记录层，形成在第一反射膜上的第一反射膜 记录层的下表面侧和形成在记录层和第一反射膜之间的间隙层; 并且在光照射步骤中通过光照射接收相干光和对应于记录信息并作为来自全息图记录介质的反射光获得的再现图像，并且基于所接收的光的结果再现信息。