公开(公告)号：US07859972B2

公开(公告)日：2010-12-28

申请号：US11885259

申请日：2006-03-01

申请人： Kenichi Kasazumi ,  Tomoya Sugita ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shinichi Kadowaki

发明人： Kenichi Kasazumi ,  Tomoya Sugita ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shinichi Kadowaki

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G03H1/22 ,  G03H1/2286 ,  G03H2240/51 ,  G11B7/005 ,  G11B7/00772 ,  G11B7/126

摘要： A holographic optical information recording/reproducing device is provided with a laser light source 1 and a polarizing beam splitter 8 for splitting a light from the laser light source 1. At the time of recording information, one of light beams split by the polarizing beam splitter 8 is modulated by a spatial light modulating element 2 to form a beam array, which becomes a signal light 25, whereas the other split light beam becomes a reference light 22. Interference fringes generated by the signal light 25 and the reference light 22 are recorded as holograms in a holographic disc 5. At the time of reproducing the information, only the reference light 22 is irradiated to the holographic disc 5 and its diffracted light is detected. At this time, the holographic optical information recording/reproducing device makes the power of the reference light 22 in the holographic disc 5 for information reproduction larger than a sum of the power of the reference light 22 and the power of the signal light 25 in the holographic disc 5 for information recording.

摘要翻译： 全息光信息记录/再现装置设置有用于分离来自激光光源1的光的激光光源1和偏振光束分离器8.在记录信息时，由偏振分束器 8被空间光调制元件2调制以形成成为信号光25的光束阵列，而另一个分束光束变为参考光22.由信号光25和参考光22产生的干涉条纹被记录 作为全息光盘5中的全息图。在再现信息时，仅将参考光22照射到全息光盘5，并检测其衍射光。 此时，全息光信息记录/再现装置使信息再现的全息光盘5中的参考光22的功率大于参考光22的功率和信号光25的功率之和 全息光盘5用于信息记录。

公开(公告)号：US20080172687A1

公开(公告)日：2008-07-17

申请号：US11885444

申请日：2006-02-23

申请人： Tomoya Sugita ,  Kenichi Kasazumi ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shinichi Kadowaki ,  Teruyuki Takizawa

发明人： Tomoya Sugita ,  Kenichi Kasazumi ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shinichi Kadowaki ,  Teruyuki Takizawa

IPC分类号： G11B23/03

CPC分类号： G11B23/0308

摘要： It is aimed to make optical characteristics of a photon mode optical information recording medium difficult to easily degrade with a simple construction. A disc cartridge accommodating a photon mode optical information recording medium is provided with a disc case having an opening section, and a shutter movably disposed between a closing position to close the opening section and an opening position to open the opening section. The disc case includes a light path bending portion for bending a clearance between the shutter at the closing position and the disc case at least at two points. Stray lights propagating in the clearance between the disc case and shutter is bent at least at two points.

摘要翻译： 旨在使光子模式光信息记录介质的光学特性难以用简单的结构降级。 容纳光子模式光信息记录介质的盘盒设置有具有开口部分的盘盒和可动地设置在关闭开关部分的关闭位置和打开开口部分的打开位置之间的挡板。 盘盒包括光路弯曲部分，用于至少在两个点处弯曲关闭位置处的挡板与盘盒之间的间隙。 至少在两点处弯曲在盘盒和快门之间的间隙中传播的杂散光。

公开(公告)号：US20080037087A1

公开(公告)日：2008-02-14

申请号：US11889298

申请日：2007-08-10

申请人： Tomoya Sugita ,  Kenichi Kasazumi

发明人： Tomoya Sugita ,  Kenichi Kasazumi

IPC分类号： G03H1/28 ,  G03H1/26

CPC分类号： G03H1/28 ,  G03H2240/52 ,  G03H2260/12 ,  G03H2260/30 ,  G11B7/007

摘要： An object of the invention is to prevent lowering of a dynamic range of a hologram recording medium without lowering an average data transfer rate, and to provide stabilized recording sensitivity. A scheduler determines a recording interval time from the point of time when light is irradiated to record a certain hologram of holograms to be multiplex-recorded to the point of time when light is irradiated to record a succeeding hologram in such a manner that at least parts of the holograms are recorded one over the other in a certain recording area. A recording interval time controller controls a light source to irradiate the light depending on the recording interval time determined by the scheduler.

摘要翻译： 本发明的目的是防止全息图记录介质的动态范围的降低，而不降低平均数据传送速率，并提供稳定的记录灵敏度。 调度器确定从光照射的时间点开始的记录间隔时间，以记录要被多路复用记录的特定全息图，以便在照射光的时候记录下一个全息图，使得至少部分 的全息图在某个记录区域中彼此记录。 记录间隔时间控制器根据由调度器确定的记录间隔时间控制光源照射光。

公开(公告)号：US08064115B2

公开(公告)日：2011-11-22

申请号：US12049844

申请日：2008-03-17

申请人： Kenichi Kasazumi ,  Tomoya Sugita

发明人： Kenichi Kasazumi ,  Tomoya Sugita

IPC分类号： G03H1/16

CPC分类号： G03H1/12 ,  G03H2223/13 ,  G03H2223/19 ,  G03H2225/33 ,  G03H2225/55 ,  G03H2240/61 ,  G11B7/0065 ,  G11B7/128 ,  G11B7/1369

摘要： A hologram recording/reproducing apparatus includes: a coherent light source; a spatial light modulator which spatially modulates light from the coherent light source; a Fourier transform lens which concentrates light modulated by the spatial light modulator upon a hologram medium; and a two-dimensional light-receiving element array which receives light from the hologram medium. The spatial light modulator is divided into a reference light area and a signal light area, and the divergence angle of reference light emitted from the reference light area is wider than the divergence angle of signal light emitted from the signal light area.

摘要翻译： 全息记录/重放装置包括：相干光源; 空间光调制器，空间调制来自相干光源的光; 将由空间光调制器调制的光聚集在全息图介质上的傅里叶变换透镜; 以及从全息图介质接收光的二维光接收元件阵列。 空间光调制器被分为参考光区域和信号光区域，从参考光区域发射的参考光的发散角比从信号光区域发射的信号光的发散角宽。

公开(公告)号：US07852731B2

公开(公告)日：2010-12-14

申请号：US11885416

申请日：2006-02-22

申请人： Shinichi Kadowaki ,  Kenichi Kasazumi ,  Kazuhisa Yamamoto ,  Tetsuro Mizushima ,  Tomoya Sugita

发明人： Shinichi Kadowaki ,  Kenichi Kasazumi ,  Kazuhisa Yamamoto ,  Tetsuro Mizushima ,  Tomoya Sugita

IPC分类号： G09B7/00

CPC分类号： G11B7/00781 ,  G11B7/0065 ,  G11B7/09 ,  G11B7/24044

摘要： Disclosed is an arrangement that enables to keep a relative positional relation between a beam for servo control and a beam for information recording/reproduction constant concerning focusing control and tracking control, even if the two beams are different from each other. An optical storage medium has a reflection surface for reflecting a first beam having a first wavelength, and reflecting a second beam having a second wavelength different from the first wavelength; and an information storage layer for recording information as an interference pattern by incidence of the first beam, or reproducing the information from a wave surface based on the interference pattern. The reflection surface is formed with plural marks or guide grooves usable in a tracking operation or a focusing operation by irradiation of the second beam. The information storage layer is partially formed, in advance, with a reference interference pattern which is reproduced when the first beam is irradiated, and which is used as a reference for correcting the relative positional relation between the first beam and the second beam.

摘要翻译： 公开了一种能够保持用于伺服控制的光束和用于关于聚焦控制和跟踪控制的信息记录/再现的光束之间的相对位置关系的布置，即使两个光束彼此不同。 光学存储介质具有用于反射具有第一波长的第一光束的反射表面，并且反射具有不同于第一波长的第二波长的第二光束; 以及信息存储层，用于通过第一光束的入射记录信息作为干涉图案，或者基于干涉图案从波面再现信息。 反射面形成有多个标记或引导槽，可用于通过第二光束照射的跟踪操作或聚焦操作。 信息存储层预先以照射第一光束时再现的参考干涉图案部分地形成，并且用作用于校正第一光束和第二光束之间的相对位置关系的参考。

公开(公告)号：US20090303856A1

公开(公告)日：2009-12-10

申请号：US11885416

申请日：2006-02-22

申请人： Shinichi Kadowaki ,  Kenichi Kasazumi ,  Kazuhisa Yamamoto ,  Tetsuro Mizushima ,  Tomoya Sugita

发明人： Shinichi Kadowaki ,  Kenichi Kasazumi ,  Kazuhisa Yamamoto ,  Tetsuro Mizushima ,  Tomoya Sugita

IPC分类号： G11B7/00 ,  G11B7/24

CPC分类号： G11B7/00781 ,  G11B7/0065 ,  G11B7/09 ,  G11B7/24044

摘要： Disclosed is an arrangement that enables to keep a relative positional relation between a beam for servo control and a beam for information recording/reproduction constant concerning focusing control and tracking control, even if the two beams are different from each other. An optical storage medium has a reflection surface for reflecting a first beam having a first wavelength, and reflecting a second beam having a second wavelength different from the first wavelength; and an information storage layer for recording information as an interference pattern by incidence of the first beam, or reproducing the information from a wave surface based on the interference pattern. The reflection surface is formed with plural marks or guide grooves usable in a tracking operation or a focusing operation by irradiation of the second beam. The information storage layer is partially formed, in advance, with a reference interference pattern which is reproduced when the first beam is irradiated, and which is used as a reference for correcting the relative positional relation between the first beam and the second beam.

摘要翻译： 公开了一种能够保持用于伺服控制的光束和用于关于聚焦控制和跟踪控制的信息记录/再现的光束之间的相对位置关系的布置，即使两个光束彼此不同。 光学存储介质具有用于反射具有第一波长的第一光束的反射表面，并且反射具有不同于第一波长的第二波长的第二光束; 以及信息存储层，用于通过第一光束的入射记录信息作为干涉图案，或者基于干涉图案从波面再现信息。 反射面形成有多个标记或引导槽，可用于通过第二光束照射的跟踪操作或聚焦操作。 信息存储层预先以照射第一光束时再现的参考干涉图案部分地形成，并且用作用于校正第一光束和第二光束之间的相对位置关系的参考。

公开(公告)号：US20090225641A1

公开(公告)日：2009-09-10

申请号：US12293337

申请日：2007-03-14

申请人： Tomoya Sugita ,  Kenichi Kasazumi

发明人： Tomoya Sugita ,  Kenichi Kasazumi

IPC分类号： G11B7/00

CPC分类号： G03H1/28 ,  G03H1/265 ,  G11B7/00772

摘要： An information recording/reproducing device irradiates a signal light beam containing arbitrary two-dimensional information and a reference beam emitted from the same light source as the signal light beam to an arbitrary region of a hologram recording medium to record a first hologram. After the first hologram is recorded, the device changes the incident angle of the signal light beam with respect to the hologram recording medium and multiplex-records a second hologram, which is different from the first hologram, in the same region as the region in which the first hologram is recorded by irradiating a signal light beam whose incident angle has been changed and a reference beam substantially the same as the reference beam used when recording the first hologram while the device obtains at least a part of a diffracted beam from the first hologram simultaneously.

摘要翻译： 信息记录/再现装置将包含任意二维信息的信号光束和从与该信号光束相同的光源发射的参考光束照射到全息图记录介质的任意区域以记录第一全息图。 在记录第一全息图之后，该装置改变相对于全息图记录介质的信号光束的入射角，并将与第一全息图不同的第二全息图与其中 通过照射入射角已经改变的信号光束和在记录第一全息图时使用的参考光束基本相同的参考光束来记录第一全息图，同时该装置从第一全息图获得至少一部分衍射光束 同时。

公开(公告)号：US20090080466A1

公开(公告)日：2009-03-26

申请号：US11661314

申请日：2006-02-17

申请人： Kazuhisa Yamamoto ,  Kenichi Kasazumi ,  Tomoya Sugita ,  Tetsuro Mizushima ,  Shinichi Kadowaki

发明人： Kazuhisa Yamamoto ,  Kenichi Kasazumi ,  Tomoya Sugita ,  Tetsuro Mizushima ,  Shinichi Kadowaki

IPC分类号： H01S3/11 ,  H01S3/30 ,  H01S5/00 ,  H01S3/13

CPC分类号： G11B7/0065 ,  G03H1/02 ,  G03H1/0486 ,  G03H2001/0212 ,  G03H2222/10 ,  G03H2222/23 ,  G11B7/127 ,  H01S3/0092 ,  H01S3/025 ,  H01S3/0405 ,  H01S3/09415 ,  H01S3/109 ,  H01S3/113 ,  H01S3/1618 ,  H01S3/1643 ,  H01S5/02208 ,  H01S5/02248 ,  H01S5/06256

摘要： For performing hologram recording or reproduction, an oscillation wavelength half value width Δλ of a coherent light source 21 satisfies a relationship of Δλ

摘要翻译： 为了执行全息图记录或再现，相干光源21的振荡波长半值宽度Deltalambda在基本全息图尺寸为S时满足Deltalλλ2/（Sx2sinθ）的关系，参考光与 信号光为θ，相干光源的振荡波长为λ。 即使当产生杂散光时，相干光源21可以抑制由于杂散光而产生不必要的干涉条纹，并且稳定地记录和再现全息图。

公开(公告)号：US20080158512A1

公开(公告)日：2008-07-03

申请号：US11884751

申请日：2006-02-24

申请人： Tetsuro Mizushima ,  Kenichi Kasazumi ,  Tomoya Sugita ,  Kazuhisa Yamamoto

发明人： Tetsuro Mizushima ,  Kenichi Kasazumi ,  Tomoya Sugita ,  Kazuhisa Yamamoto

IPC分类号： G03B21/14 ,  G02B5/30

CPC分类号： G03B21/208 ,  G02B5/3083 ,  G03B21/2033 ,  G03B21/2073 ,  G03B33/12 ,  G03B33/14 ,  H04N9/3129 ,  H04N9/3161

摘要： A two-dimensional image formation device of the present invention is provided with a spatial light modulation element (7) for modulating light having a linear polarization and emitted from a laser light source (1), and a depolarization means (21) for depolarizing the modulated light before it is incident on an image display surface. The light having a linear polarization is used before and after incidence of irradiated light to the spatial light modulation element (7), and the linear polarization of the irradiated light is depolarized after the modulation, whereby randomly polarized light is projected on a screen (11). Thereby, speckle noise is significantly reduced, and a high-definition image can be formed.

摘要翻译： 本发明的二维图像形成装置设置有用于调制具有线偏振光并从激光光源发射的光的空间光调制元件（7），以及去极化装置（21），用于使 调制光在其入射到图像显示表面之前。 具有线偏振的光在照射光入射到空间光调制元件（7）之前和之后使用，并且在调制之后照射光的线偏振被去极化，从而随机偏振光投射在屏幕（11）上 ）。 因此，斑点噪声显着降低，并且可以形成高清晰度图像。

公开(公告)号：US08010975B2

公开(公告)日：2011-08-30

申请号：US11885444

申请日：2006-02-23

申请人： Tomoya Sugita ,  Kenichi Kasazumi ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shinichi Kadowaki ,  Teruyuki Takizawa

发明人： Tomoya Sugita ,  Kenichi Kasazumi ,  Tetsuro Mizushima ,  Kazuhisa Yamamoto ,  Shinichi Kadowaki ,  Teruyuki Takizawa

IPC分类号： G11B17/04

CPC分类号： G11B23/0308

摘要： A disc cartridge accommodating a photon mode optical information recording medium is provided with a disc case having an opening section, and a shutter movably disposed between a closing position to close the opening section and an opening position to open the opening section. The disc case includes a light path bending portion for bending a clearance between the shutter at the closing position and the disc case at least at two points. Stray light propagating in the clearance between the disc case and the shutter is bent at least at two points.

摘要翻译： 容纳光子模式光信息记录介质的盘盒设置有具有开口部分的盘盒和可动地设置在关闭开关部分的关闭位置和打开开口部分的打开位置之间的挡板。 盘盒包括光路弯曲部分，用于至少在两个点处弯曲关闭位置处的挡板与盘盒之间的间隙。 至少在两个点处，在盘盒和挡板之间的间隙中传播的杂散光弯曲。