公开(公告)号：US07787347B2

公开(公告)日：2010-08-31

申请号：US11918426

申请日：2006-04-10

申请人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

发明人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/1356 ,  G11B7/0901 ,  G11B7/0912 ,  G11B7/0938 ,  G11B7/123 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B2007/0013

摘要： A laser beam 32 reflected by an information layer of a multilayer optical disc 26 is reflected and split by reflecting surfaces 31a′, 31b, 31c and 31d to be incident on a photodetector element 36 as laser beams 33, 34 and 35. The laser beam 34 is collected on a light receiving region 38 for RF detection to generate an RF signal. The laser beams 33, 35 are incident on light receiving regions 37a, 37b for focus detection, and a focus error signal is generated by an SSD method. A laser beam 65 reflected by an information layer adjacent to the above information layer partially transmits through the reflecting surface 31a′ to be imaged on a light receiving region 66 for tracking detection, and a tracking error signal is generated.

摘要翻译： 由多层光盘26的信息层反射的激光束32被作为激光束33,34,35的入射到光电检测元件36的反射面31a'，31b，31c，31d反射并分割。激光束 34被收集在用于RF检测的光接收区域38上以产生RF信号。 激光束33,35入射到受光区域37a，37b上进行焦点检测，通过SSD方法产生聚焦误差信号。 由与上述信息层相邻的信息层反射的激光束65通过反射面31a'进行部分透射，以被成像在用于跟踪检测的光接收区域66上，并产生跟踪误差信号。

公开(公告)号：US20090052304A1

公开(公告)日：2009-02-26

申请号：US11918426

申请日：2006-04-10

申请人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

发明人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

IPC分类号： G11B7/135

CPC分类号： G11B7/1356 ,  G11B7/0901 ,  G11B7/0912 ,  G11B7/0938 ,  G11B7/123 ,  G11B7/131 ,  G11B7/133 ,  G11B7/1353 ,  G11B2007/0013

摘要： A laser beam 32 reflected by an information layer of a multilayer optical disc 26 is reflected and split by reflecting surfaces 31a′, 31b, 31c and 31d to be incident on a photodetector element 36 as laser beams 33, 34 and 35. The laser beam 34 is collected on a light receiving region 38 for RF detection to generate an RF signal. The laser beams 33, 35 are incident on light receiving regions 37a, 37b for focus detection, and a focus error signal is generated by an SSD method. A laser beam 65 reflected by an information layer adjacent to the above information layer partially transmits through the reflecting surface 31a′ to be imaged on a light receiving region 66 for tracking detection, and a tracking error signal is generated.

摘要翻译： 由多层光盘26的信息层反射的激光束32被作为激光束33,34,35的入射到光电检测元件36的反射面31a'，31b，31c，31d反射并分割。激光束 34被收集在用于RF检测的光接收区域38上以产生RF信号。 激光束33,35入射到受光区域37a，37b上进行焦点检测，通过SSD方法产生聚焦误差信号。 由与上述信息层相邻的信息层反射的激光束65通过反射面31a'进行部分透射，以被成像在用于跟踪检测的光接收区域66上，并产生跟踪误差信号。

公开(公告)号：US07764589B2

公开(公告)日：2010-07-27

申请号：US10595995

申请日：2005-04-20

申请人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

发明人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  G02B21/0032 ,  G02B21/006 ,  G02B21/008 ,  G11B2007/0013

摘要： In a confocal optical system having a light source 13, a first focusing means 14, a second focusing means 16, an aperture 17, and a detector 18 including a plurality of light reception regions, a position displacement is detected by detecting an intensity distribution of an image caused by a position displacement between a focusing spot of the second focusing means 16 and the aperture 17, by the detector 18. Further, the position displacement is corrected by controlling the aperture position using driving means 19 and control means 20. Also, a position displacement of the aperture 17 in the optical axis direction is detected and corrected on the basis of a change in an output of the detector 18 by oscillating the aperture 17 in the optical axis direction.

摘要翻译： 在具有光源13，第一聚焦装置14，第二聚焦装置16，孔17和包括多个光接收区域的检测器18的共焦光学系统中，通过检测位置偏移来检测位置偏移 由检测器18由第二聚焦装置16的聚焦光点与光圈17之间的位置偏移引起的图像。此外，通过使用驱动装置19和控制装置20控制光圈位置来校正位置偏移。另外， 基于孔17在光轴方向的振荡，基于检测器18的输出的变化来检测和校正孔17的光轴方向的位置位移。

公开(公告)号：US20060140070A1

公开(公告)日：2006-06-29

申请号：US10563274

申请日：2004-11-01

申请人： Teruhiro Shiono ,  Seiji Nishino ,  Tatsuo Itoh

发明人： Teruhiro Shiono ,  Seiji Nishino ,  Tatsuo Itoh

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  B82Y10/00 ,  G11B7/00452 ,  G11B7/00454 ,  G11B7/00455 ,  G11B7/1275 ,  G11B7/1365 ,  G11B7/24038 ,  G11B7/24085 ,  G11B2007/0013

摘要： An information recording medium (21) of the optical information reproduction device of the present invention includes a recording unit (3) capable of recording information three-dimensionally and provided with a track, and information is recorded by forming a plurality of recording marks along the track of the recording unit by a mark length recording method. When the track direction of the recording marks is assumed to be their longitudinal direction and the direction perpendicular to the track direction is assumed to be their lateral direction, with the present invention, for recording marks located substantially in the same plane, the total area of elongated recording marks, whose longitudinal length is greater than their lateral length, is greater than the total area of recording marks having other than elongated shapes. The optical information reproduction device of the present invention includes a first light source (20a) for emitting a reproduction light (22b) having a wavelength λ1, an objective lens (6) for focusing the reproduction light on the recording unit, and a first photodetector (19a) for detecting a reproduction signal from the reflected light from the recording unit. The focused reproduction light includes as its main component a polarized light component that is polarized perpendicular to the track direction. Also, the recording unit has a track pitch of no more than 1.3 times the wavelength λ1 of the reproduction light.

摘要翻译： 本发明的光学信息再现装置的信息记录介质（21）包括一个记录单元（3），它能够三维地记录信息并提供一个轨道，并且通过沿着该轨迹形成多个记录标记来记录信息 通过标记长度记录方法记录单元的轨迹。 假设记录标记的轨道方向为纵向方向，并且垂直于轨迹方向的方向被认为是其横向方向，根据本发明，对于基本位于同一平面上的记录标记， 其长度大于其横向长度的细长记录标记大于具有不同于细长形状的记录标记的总面积。 本发明的光信息再现装置包括用于发射具有波长λ1的再现光（22b）的第一光源（20b），用于聚焦再现的物镜（6） 记录单元上的光，以及用于检测来自记录单元的反射光的再现信号的第一光电检测器（100a）。 聚焦再现光包括垂直于轨道方向偏振的偏振光分量作为其主要分量。 此外，记录单元具有不超过再现光的波长λ1的1.3倍的轨道间距。

公开(公告)号：US08018801B2

公开(公告)日：2011-09-13

申请号：US10563274

申请日：2004-11-01

申请人： Teruhiro Shiono ,  Seiji Nishino ,  Tatsuo Itoh

发明人： Teruhiro Shiono ,  Seiji Nishino ,  Tatsuo Itoh

IPC分类号： G11B7/00

CPC分类号： G11B7/1381 ,  B82Y10/00 ,  G11B7/00452 ,  G11B7/00454 ,  G11B7/00455 ,  G11B7/1275 ,  G11B7/1365 ,  G11B7/24038 ,  G11B7/24085 ,  G11B2007/0013

摘要： An information recording medium of the optical information reproduction device of the present invention includes a recording unit capable of recording information three-dimensionally and provided with a track, and information is recorded by forming a plurality of recording marks along the track of the recording unit by a mark length recording method. When the track direction of the recording marks is assumed to be their longitudinal direction and the direction perpendicular to the track direction is assumed to be their lateral direction, with the present invention, for recording marks located substantially in the same plane, the total area of elongated recording marks, whose longitudinal length is greater than their lateral length, is greater than the total area of recording marks having other than elongated shapes. The optical information reproduction device of the present invention includes a first light source for emitting a reproduction light having a wavelength λ1, an objective lens for focusing the reproduction light on the recording unit, and a first photodetector for detecting a reproduction signal from the reflected light from the recording unit. The focused reproduction light includes as its main component a polarized light component that is polarized perpendicular to the track direction. Also, the recording unit has a track pitch of no more than 1.3 times the wavelength λ1of the reproduction light.

摘要翻译： 本发明的光信息再现装置的信息记录介质包括一个记录单元，它能够三维地记录信息并提供一个轨道，并且通过沿记录单元的轨道形成多个记录标记来记录信息。 标记长度记录方法。 假设记录标记的轨道方向为纵向方向，并且垂直于轨迹方向的方向被认为是其横向方向，根据本发明，对于基本位于同一平面上的记录标记， 其长度大于其横向长度的细长记录标记大于具有不同于细长形状的记录标记的总面积。 本发明的光学信息再现装置包括用于发射具有波长λ1的再现光的第一光源，用于将再现光聚焦在记录单元上的物镜和用于检测来自反射光的再现信号的第一光电检测器 从录音单元。 聚焦再现光包括垂直于轨道方向偏振的偏振光分量作为其主要分量。 此外，记录单元的轨道间距不大于再现光的波长λ1的1.3倍。

公开(公告)号：US07898925B2

公开(公告)日：2011-03-01

申请号：US11667765

申请日：2005-11-08

申请人： Teruhiro Shiono ,  Tatsuo Itoh ,  Seiji Nishino

发明人： Teruhiro Shiono ,  Tatsuo Itoh ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/257 ,  B82Y10/00 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/244 ,  G11B7/245 ,  G11B7/25 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2538 ,  G11B2007/24612 ,  G11B2007/24624

摘要： An information recording medium includes a substrate and a recording portion having recording layers on the substrate, wherein the recording portion is capable of three-dimensional recording by changing an optical constant of the recording layers by irradiation of recording light, and a first reflected-light reducing portion for reducing reflected lights of reproducing light from the substrate side is provided at a side opposite to an incident side of the reproducing light with respect to the recording portion, and an optical information recording/reproducing apparatus records and reproduces information to and from the medium.

摘要翻译： 信息记录介质包括基板和在基板上具有记录层的记录部分，其中通过记录光的照射改变记录层的光学常数，记录部分能够进行三维记录，并且第一反射光 用于减少从基板侧再现光的反射光的减少部分设置在与记录部分的再现光的入射侧相对的一侧，并且光学信息记录/再现装置记录和再现信息 中。

公开(公告)号：US20080316898A1

公开(公告)日：2008-12-25

申请号：US10595995

申请日：2005-04-20

申请人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

发明人： Tatsuo Itoh ,  Teruhiro Shiono ,  Seiji Nishino

IPC分类号： G11B7/135

CPC分类号： G11B7/1381 ,  G02B21/0032 ,  G02B21/006 ,  G02B21/008 ,  G11B2007/0013

摘要： In a confocal optical system provided with a light source 13, a first focusing means 14, a second focusing means 16, an aperture 17, and a detector 18, the detector has plural light reception regions. A position displacement is detected by detecting an intensity distribution of an image caused by a position displacement between the focusing spot of the second focusing means 16 and the aperture 17 by the detector 18, and the position displacement is corrected by controlling the aperture position using driving means 19 and control means 20. Also, a position displacement of the aperture 17 in the optical axis direction is detected and corrected on the basis of a change in output of the detector 18 by oscillating the aperture 17 in the optical axis direction.

摘要翻译： 在具有光源13，第一聚焦装置14，第二聚焦装置16，孔17和检测器18的共焦光学系统中，检测器具有多个光接收区域。 通过检测由第二聚焦装置16的聚焦光点与检测器18之间的位置偏移引起的图像的强度分布来检测位置位移，并且通过使用驱动来控制光圈位置来校正位置偏移 装置19和控制装置20.此外，通过使光圈17沿光轴方向振荡，基于检测器18的输出变化来检测和校正孔17在光轴方向上的位置偏移。

公开(公告)号：US20080130458A1

公开(公告)日：2008-06-05

申请号：US11667765

申请日：2005-11-08

申请人： Teruhiro Shiono ,  Tatsuo Itoh ,  Seiji Nishino

发明人： Teruhiro Shiono ,  Tatsuo Itoh ,  Seiji Nishino

IPC分类号： G11B7/00

CPC分类号： G11B7/257 ,  B82Y10/00 ,  G11B7/00455 ,  G11B7/24038 ,  G11B7/244 ,  G11B7/245 ,  G11B7/25 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2538 ,  G11B2007/24612 ,  G11B2007/24624

摘要： An information recording medium includes a substrate and a recording portion having recording layers on the substrate, wherein the recording portion is capable of three-dimensional recording by changing an optical constant of the recording layers by an irradiation of a recording light, and a first reflected-light reducing portion for reducing reflected lights of a reproducing light from the substrate side is provided at a side opposite to an incident side of the reproducing light with respect to the recording portion, and an optical information recording/reproducing apparatus records and reproduces information to and from the medium.

摘要翻译： 信息记录介质包括基板和在基板上具有记录层的记录部分，其中记录部分能够通过记录光的照射改变记录层的光学常数而进行三维记录，并且第一反射 在与再现光的相对于记录部分的入射侧相反的一侧设置有用于减少来自基板侧的再现光的反射光的减光部分，并且光学信息记录/再现装置将信息记录和再现 和从媒介。

公开(公告)号：US20090067313A1

公开(公告)日：2009-03-12

申请号：US11913013

申请日：2006-04-26

申请人： Teruhiro Shiono ,  Tatsuo Itoh

发明人： Teruhiro Shiono ,  Tatsuo Itoh

IPC分类号： G11B7/00

CPC分类号： B82Y10/00 ,  G11B7/1275 ,  G11B7/24038 ,  G11B7/241 ,  G11B7/245 ,  G11B7/25 ,  G11B7/257 ,  G11B2007/0013 ,  G11B2007/24624

摘要： An information-recording medium having a substrate and a recording part formed on the substrate allowing three-dimensional formation of recording pits, the recording part, comprising multiple recording layers, in which the recording pits are formed with a converged recording light at a wavelength of λ2 and reproduced with a converged reproducing light with a wavelength λ1 shorter than the wavelength λ2, and intermediate layers alternately laminated between the recording layers, wherein the reflectance at the recording light wavelength of λ2 in the unrecorded region is smaller than the reflectance at the reproducing light wavelength of λ1 in the unrecorded regions of the recording layers.

摘要翻译： 一种信息记录介质，具有基板和形成在基板上的记录部分，允许记录凹坑的三维形成，记录部分包括多个记录层，其中记录凹坑以会聚的记录光形成波长为 λ2并用波长λ1比波长λ2短的会聚再现光再现，并且在记录层之间交替层叠的中间层，其中未记录区域中记录光波长λ2处的反射率小于再现时的反射率 记录层的未记录区域的λ1的光波长。

公开(公告)号：US07477407B2

公开(公告)日：2009-01-13

申请号：US11268663

申请日：2005-11-08

申请人： Tatsuo Itoh ,  Teruhiro Shiono ,  Kazuya Hisada

发明人： Tatsuo Itoh ,  Teruhiro Shiono ,  Kazuya Hisada

IPC分类号： G01B11/28

CPC分类号： G01B11/0616 ,  G01B9/04 ,  G02B21/0072

摘要： A confocal optical device and a spherical-aberration correction method reduce the generation of spherical aberration. This confocal optical device includes a drive mechanism which moves a sample board to change the distance between an objective lens and the sample board. A spherical-aberration correction element is disposed between a light source and the objective lens. A reference-position detection section, based on a detection result by a photo-detector, detects the position of the sample board when the focal position of the objective lens coincides with the surface of the sample. A movement-distance derivation section, based on a detection result by the photo-detector, calculates a distance by which the sample board is moved until the focal position of the objective lens coincides with an object to be measured inside of the sample, and derives the depth at which the measured object is located in the sample. A correction control section controls the spherical-aberration correction element according to the inside-sample depth of the measured object.

摘要翻译： 共焦光学装置和球面像差校正方法减少了球面像差的产生。 该共焦光学装置包括驱动机构，该驱动机构移动样品板以改变物镜与样品板之间的距离。 在光源和物镜之间设置球面像差校正元件。 当基准位置检测部分基于光检测器的检测结果，当物镜的焦点位置与样品的表面一致时，检测样品板的位置。 基于光检测器的检测结果的运动距离导出部分计算样品板移动到物镜的焦点位置与样品内部待测物体重合的距离，并导出 测量对象位于样品中的深度。 校正控制部根据测量对象的内部样本深度控制球面像差校正元件。