公开(公告)号：US07333253B2

公开(公告)日：2008-02-19

申请号：US10514815

申请日：2003-05-19

申请人： Kazuo Kuroda ,  Satoshi Sugiura ,  Shuuichi Yanagisawa ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota

发明人： Kazuo Kuroda ,  Satoshi Sugiura ,  Shuuichi Yanagisawa ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota

IPC分类号： G11B7/00

CPC分类号： G11B7/128 ,  G03H1/26 ,  G03H1/265 ,  G03H2001/0232 ,  G11B7/0065 ,  G11B7/135 ,  G11C13/042

摘要： A hologram record apparatus (100) includes a parameter set device (19), a move device (20), and a control device (18). The parameter set device (19) modifies parameters for multiple recordings such as a record angle and a focal depth in relation to at least one of signal light (L3) and reference light (L2) and can fix the parameters. The move device (20) relatively moves the focus position of the signal light and the reference light in the direction along the record surface of a hologram record medium. The control device (18) performs control so that the parameter for the last recording used for recording at the m-th focus position is used as the parameter for the first recording at the m+1-th focus position.

摘要翻译： 全息记录装置（100）包括参数设定装置（19），移动装置（20）和控制装置（18）。 相对于信号光（L 3）和参考光（L 2）中的至少一个，参数设定装置（19）修改诸如记录角度和焦点深度的多个记录的参数，并且可以固定参数。 移动装置（20）沿着全息图记录介质的记录表面的方向相对地移动信号光和参考光的聚焦位置。 控制装置（18）进行控制，使得将用于第m个对焦位置的记录的最后记录的参数用作在第m + 1个焦点位置处的第一次记录的参数。

公开(公告)号：US20060109535A1

公开(公告)日：2006-05-25

申请号：US10514627

申请日：2003-05-19

申请人： Kazuo Kuroda ,  Satoshi Sugiura ,  Shuuichi Yanagisawa ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota

发明人： Kazuo Kuroda ,  Satoshi Sugiura ,  Shuuichi Yanagisawa ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota

IPC分类号： G03H1/26

CPC分类号： G11C13/042 ,  G03H1/265 ,  G03H2001/0232 ,  G11B7/0065 ,  G11B7/135

摘要： A hologram recording apparatus (100) includes a record angle change device (19) capable of relatively changing the record angle of a hologram recording medium (200) relative to signal light (L3) and reference light (L2); and a control device (18). The control device sets a record angle for recording a specific angle record plane as a standard record angle among a plurality of angle record planes on the hologram recording medium. Furthermore, the control device controls the record angle change device so as to change and fix the record angle after then by a predetermined angle from the set standard record angle.

摘要翻译： 全息记录设备（100）包括能够相对于信号光（L 3）和参考光（L 2）相对地改变全息图记录介质（200）的记录角度的记录角度改变装置（19）。 和控制装置（18）。 控制装置在全息图记录介质上的多个角度记录平面之间设置用于记录特定角度记录平面作为标准记录角度的记录角度。 此外，控制装置控制记录角度改变装置，从而从设定的标准记录角度改变并固定记录角度，然后固定预定角度。

公开(公告)号：US20050185230A1

公开(公告)日：2005-08-25

申请号：US10514826

申请日：2003-05-19

申请人： Kazuo Kuroda ,  Satoshi Sugiura ,  Shuuichi Yanagisawa ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota

发明人： Kazuo Kuroda ,  Satoshi Sugiura ,  Shuuichi Yanagisawa ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota

IPC分类号： G02F1/01 ,  G02F1/061 ,  G02F1/13 ,  G03H1/04 ,  G03H1/16 ,  G03H1/26 ,  G11B7/0065 ,  G11B7/125 ,  G11C13/04 ,  G03H1/02

CPC分类号： G11B7/128 ,  G03H1/0841 ,  G03H1/16 ,  G03H1/26 ,  G03H2210/22 ,  G03H2225/22 ,  G11B7/0065 ,  G11C13/042

摘要： A hologram record apparatus (100) includes a spatial light modulator (15) and a control device (18). The spatial light modulator (15) is arranged on an optical path of signal light (L1) and divided into a plurality of cell blocks (151) arranged in a matrix. Each of the cell blocks (151) is further divided into a plurality of cells (152) arranged in a matrix. The spatial light modulator (15) can perform modulation on the cell basis. The control device (18) controls the spatial light modulator so as to modulate the signal light according to a plurality of record information sets to be recorded on a hologram record medium (200). Pluralities of modulation units (153) existing in the same cell block are not made into identical patterns. Since a plurality of cell blocks having a large pitch as compared to the pixel pitch are simultaneously or successively turned on/off, it is possible to reduce the distance between the zeroth-order light and the higher-order light.

摘要翻译： 全息记录装置（100）包括空间光调制器（15）和控制装置（18）。 空间光调制器（15）被布置在信号光（L 1）的光路上，并被分成以矩阵排列的多个单元块（151）。 每个单元块（151）进一步被划分成矩阵排列的多个单元（152）。 空间光调制器（15）可以基于单元进行调制。 控制装置（18）控制空间光调制器，以便根据要记录在全息记录介质（200）上的多个记录信息集来调制信号光。 存在于相同单元块中的多个调制单元（153）不被制成相同的模式。 由于与像素间距相比具有大间距的多个单元块同时或连续地导通/截止，所以可以减少零级光和高阶光之间的距离。

公开(公告)号：US07324255B2

公开(公告)日：2008-01-29

申请号：US10521312

申请日：2003-07-23

申请人： Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

发明人： Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

IPC分类号： G02F1/01

CPC分类号： G03H1/02 ,  G02F1/134309 ,  G02F2203/22 ,  G03H1/265 ,  G03H2001/0224 ,  G03H2210/22 ,  G03H2225/22 ,  G03H2240/61 ,  G11B7/0065 ,  G11B7/128

摘要： A spatial light modulator, in which light modulation elements are arranged in a same plane. In the spatial light modulator, a plurality of the light modulation elements are arranged such that there are at least two periods of periodic structure corresponding to an arrangement of the light modulation elements in an arbitrary direction in the plane where the light modulation elements are arranged.

摘要翻译： 光调制元件布置在同一平面内的空间光调制器。 在空间光调制器中，多个光调制元件布置成使得在布置光调制元件的平面中存在至少两个周期性结构对应于光调制元件在任意方向上的布置的周期结构。

公开(公告)号：US07079469B2

公开(公告)日：2006-07-18

申请号：US10516692

申请日：2003-05-16

申请人： Yoshihisa Itoh ,  Satoru Tanaka ,  Akihiro Tachibana ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

发明人： Yoshihisa Itoh ,  Satoru Tanaka ,  Akihiro Tachibana ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

IPC分类号： G11B7/00

CPC分类号： G03H1/265 ,  G03H1/16 ,  G03H1/26 ,  G03H2260/54 ,  G11B7/0065

摘要： A hologram recording and reproducing system having compatibility has: a supporting unit for freely attachably supporting a recording medium including a photosensitive material; a signal light-generating unit for projecting a coherent light beam modulated according to a predetermined data into a recording medium and generating a diffraction grating by providing a three-dimensional light interference pattern in the recording medium; a detector unit for detecting and photoelectrically converting a diffracted light from the diffraction grating; and a demodulating unit for demodulating a predetermined data from an output from the detector unit. The detector unit has an intermediate data-generating unit for generating an intermediate data, and the demodulating unit has a conversion table in which the intermediate data and the predetermined data are uniquely associated, and demodulates the predetermined data by performing a computation based on a correlation in the conversion table.

摘要翻译： 具有兼容性的全息图记录和再现系统具有：用于可自由连接地支撑包括感光材料的记录介质的支撑单元; 信号光产生单元，用于将根据预定数据调制的相干光束投射到记录介质中，并通过在记录介质中提供三维光干涉图案来产生衍射光栅; 用于检测和光电转换衍射光栅的衍射光的检测器单元; 以及解调单元，用于从检测器单元的输出解调预定数据。 检测器单元具有用于产生中间数据的中间数据生成单元，并且解调单元具有其中中间数据和预定数据唯一相关联的转换表，并且通过基于相关性执行计算来解调预定数据 在转换表中。

公开(公告)号：US20050275919A1

公开(公告)日：2005-12-15

申请号：US10521312

申请日：2003-07-23

申请人： Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

发明人： Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

IPC分类号： G02F1/01 ,  G02F1/1343 ,  G02F1/135 ,  G03H1/26 ,  G11B7/0065 ,  G11B7/125 ,  G02B26/00

CPC分类号： G03H1/02 ,  G02F1/134309 ,  G02F2203/22 ,  G03H1/265 ,  G03H2001/0224 ,  G03H2210/22 ,  G03H2225/22 ,  G03H2240/61 ,  G11B7/0065 ,  G11B7/128

摘要： A spatial light modulator, in which light modulation elements are arranged in a same plane. In the spatial light modulator, a plurality of the light modulation elements are arranged such that there are at least two periods of periodic structure corresponding to an arrangement of the light modulation elements in an arbitrary direction in the plane where the light modulation elements are arranged.

摘要翻译： 光调制元件布置在同一平面内的空间光调制器。 在空间光调制器中，多个光调制元件布置成使得在布置光调制元件的平面中存在至少两个周期性结构对应于光调制元件在任意方向上的布置的周期结构。

公开(公告)号：US5999509A

公开(公告)日：1999-12-07

申请号：US22521

申请日：1998-02-12

申请人： Satoshi Sugiura ,  Akihiro Tachibana ,  Yoshihisa Kubota

发明人： Satoshi Sugiura ,  Akihiro Tachibana ,  Yoshihisa Kubota

IPC分类号： G11B7/00 ,  G11B7/09 ,  G11B7/135 ,  G02B13/00

CPC分类号： G11B7/1356 ,  G11B7/0909 ,  G11B2007/0006

摘要： An optical pickup or an optical head capable of favorably irradiating a plurality of independent different light beams and receiving return light with a simple structure. The optical pickup is composed of a beam emitting unit for supplying at least two independent light beams, a common light converging optical system for converging the light beams from the beam emitting unit to a recording medium, an integrated prism for guiding each of the light beams from the beam emitting unit incident thereto to the light converging optical system and for providing return light from the recording medium incident thereto with astigmatism, and a light receiving element for receiving the return light provided with astigmatism by the prism.

摘要翻译： 能够以简单的结构有利地照射多个独立的不同光束和接收返回光的光学拾取器或光学头。 光拾取器由用于提供至少两个独立光束的光束发射单元组成，用于将来自光束发射单元的光束会聚到记录介质的公共聚光光学系统，用于引导每个光束的一体化棱镜 从入射到其的光束发射单元到聚光光学系统，并用于从入射到其上的记录介质提供具有散光的返回光;以及光接收元件，用于接收由棱镜提供散光的返回光。

公开(公告)号：US07688699B2

公开(公告)日：2010-03-30

申请号：US11896402

申请日：2007-08-31

申请人： Akihiro Tachibana ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

发明人： Akihiro Tachibana ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

IPC分类号： G11B7/00

CPC分类号： G11B7/0938 ,  G11B7/0065 ,  G11B7/083 ,  G11B7/1362

摘要： A holographic recording and reproducing apparatus comprises: a pickup for moving an objective lens that focuses a coherent light beam along a recording track on a holographic recording medium and for detecting reflected light from the recording track to perform focus- and tracking-servo control; a relative velocity determination unit for determining a relative velocity of a converging position of the objective lens with respect to the holographic recording medium; a driving unit for changing a relative position of the objective lens with respect to an optical path of the coherent light beam so as to make the relative velocity fall within a predetermined range at least during a predetermined period; and a control unit for performing recording or reproduction for a recording layer during the predetermined period. The holographic recording medium includes a plurality of markers used for positioning an optical interference pattern of the coherent light beam.

摘要翻译： 一种全息记录和再现装置，包括：拾取器，用于移动物镜，沿着记录轨道将相干光束聚焦在全息记录介质上，并用于检测来自记录轨道的反射光，以执行对焦和跟踪伺服控制; 相对速度确定单元，用于确定物镜相对于全息记录介质的会聚位置的相对速度; 驱动单元，用于相对于所述相干光束的光路改变所述物镜的相对位置，以使所述相对速度至少在预定时段期间落在预定范围内; 以及控制单元，用于在预定时段期间执行记录层的记录或再现。 全息记录介质包括用于定位相干光束的光学干涉图案的多个标记。

公开(公告)号：US20080002553A1

公开(公告)日：2008-01-03

申请号：US11896402

申请日：2007-08-31

申请人： Akihiro Tachibana ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

发明人： Akihiro Tachibana ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Yoshihisa Kubota ,  Kazuo Kuroda ,  Satoshi Sugiura

IPC分类号： G11B7/00

CPC分类号： G11B7/0938 ,  G11B7/0065 ,  G11B7/083 ,  G11B7/1362

摘要： A holographic recording and reproducing apparatus comprises: a pickup for moving an objective lens that focuses a coherent light beam along a recording track on a holographic recording medium and for detecting reflected light from the recording track to perform focus- and tracking-servo control; a relative velocity determination unit for determining a relative velocity of a converging position of the objective lens with respect to the holographic recording medium; a driving unit for changing a relative position of the objective lens with respect to an optical path of the coherent light beam so as to make the relative velocity fall within a predetermined range at least during a predetermined period; and a control unit for performing recording or reproduction for a recording layer during the predetermined period. The holographic recording medium includes a plurality of markers used for positioning an optical interference pattern of the coherent light beam.

摘要翻译： 一种全息记录和再现装置，包括：拾取器，用于移动物镜，沿着记录轨道将相干光束聚焦在全息记录介质上，并用于检测来自记录轨道的反射光，以执行对焦和跟踪伺服控制; 相对速度确定单元，用于确定物镜相对于全息记录介质的会聚位置的相对速度; 驱动单元，用于相对于所述相干光束的光路改变所述物镜的相对位置，以使所述相对速度至少在预定时段期间落在预定范围内; 以及控制单元，用于在预定时段期间执行记录层的记录或再现。 全息记录介质包括用于定位相干光束的光学干涉图案的多个标记。

公开(公告)号：US20050231775A1

公开(公告)日：2005-10-20

申请号：US10522687

申请日：2003-07-30

申请人： Yoshihisa Kubota ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Kazuo Kuroda ,  Satoshi Sugiura

发明人： Yoshihisa Kubota ,  Satoru Tanaka ,  Yoshihisa Itoh ,  Akihiro Tachibana ,  Kazuo Kuroda ,  Satoshi Sugiura

IPC分类号： G03H1/04 ,  G03H1/16 ,  G03H1/26 ,  G11B7/0065 ,  G11B7/125 ,  G11B7/135 ,  G11B7/24 ,  G02B5/32

CPC分类号： G11B7/128 ,  G03H1/0402 ,  G03H1/0404 ,  G03H1/0493 ,  G03H1/16 ,  G03H1/26 ,  G03H2001/0419 ,  G03H2210/22 ,  G11B7/0065 ,  G11B7/1353 ,  G11B7/24

摘要： A method for holographic recording and reproducing includes a recording process and a reproducing process. In the recording process, a coherent reference beam is spatially modulated in accordance with information to be recorded to generate a signal beam, and the signal beam is converged. The converged signal beam enters and passes through a recording medium made of a photosensitive material. A diffraction grating area according to a light interference pattern is created in a portion where a 0th-order beam and a diffraction beam of the signal beam interfere with each other inside the recording medium. In the reproducing process, a reproduced wave corresponding to the signal beam is generated by illuminating the diffraction grating area with the reference beam.

摘要翻译： 一种用于全息记录和再现的方法包括记录处理和再现处理。 在记录过程中，根据待记录的信息对相干参考光束进行空间调制以产生信号光束，信号光束会聚。 会聚的信号光束进入并通过由感光材料制成的记录介质。 在信号光束的0级光束和衍射光束在记录介质内部彼此干扰的部分中产生根据光干涉图案的衍射光栅区域。 在再现处理中，通过用参考光束照射衍射光栅区域来产生对应于信号光束的再生波。