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71. 发明授权

US5440536A Optical disk apparatus for producing information recorded on a recording track 失效
标题翻译：用于产生记录在记录磁道上的信息的光盘装置
公开(公告)号：US5440536A
公开(公告)日：1995-08-08
申请号：US202518
申请日：1994-02-28
申请人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
发明人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0045 , G11B7/0943
摘要： An optical disk apparatus includes a photodetector divided into eight segments which receive the laser beam reflected from the optical disk and produce signals based on the laser beam sport thereon. In this apparatus, these eight segments are combined in several patterns for the recorded information reproduction, the tracking error detection, and the focus error detection, respectively. For the recorded information reproduction, eight segments are used as combined in three segment cells RC1, RC2, and RC3 which extend in a direction parallel to each other such that the segment cell RC1 is in center and is sandwitched by other segment cell RC2 and RC3. The segment cells RC1, RC2, and RC3 are located perpendicular to the recording track of the optical disk and produce three signals C, R, and L indicative of the laser beam intensity of the laser beam spot thereon, respectively. Thus obtained signals C is multiplied by a constant K and then added to the other signals R and L. By selecting suitable value as the constant K, the crosstalk component in the reproduced signal can be reduced.
摘要翻译：光盘装置包括被分成八个部分的光电检测器，其接收从光盘反射的激光束并基于其上的激光束运动产生信号。在这种装置中，这八个段分别以记录信息再现，跟踪误差检测和聚焦误差检测的多种模式组合。对于记录的信息再现，八个段被组合在三个分段单元RC1，RC2和RC3中，它们在彼此平行的方向上延伸，使得分段单元RC1处于中心并被其它分段单元RC2和RC3 。分段单元RC1，RC2和RC3垂直于光盘的记录轨道定位，并分别产生表示激光束点的激光束强度的三个信号C，R和L。这样获得的信号C乘以常数K，然后加到其他信号R和L.通过选择合适的值作为常数K，可以减少再现信号中的串扰分量。

72. 发明申请

US20130083645A1 OPTICAL PICKUP, INCLINATION ANGLE DETECTION METHOD, OPTICAL INFORMATION DEVICE AND INFORMATION PROCESSING DEVICE 有权
标题翻译：光学拾取，放大角度检测方法，光学信息设备和信息处理设备
公开(公告)号：US20130083645A1
公开(公告)日：2013-04-04
申请号：US13702882
申请日：2011-11-09
申请人： Hidenori Wada , Kousei Sano , Keiichi Matsuzaki , Sadao Mizuno
发明人： Hidenori Wada , Kousei Sano , Keiichi Matsuzaki , Sadao Mizuno
IPC分类号： G11B7/13
CPC分类号： G11B7/13 , G11B7/0956 , G11B7/131 , G11B7/1353 , G11B7/1365 , G11B7/1387 , G11B2007/0013
摘要： An optical pickup, an inclination angle detection method, an optical information device, and an information processing device capable of reliably and accurately detecting a relative inclination angle between an end face of a solid immersion lens and a surface of an optical recording medium are provided. A convergence position modifying unit modifies convergence states of a first beam and a second beam according to layers of an optical recording medium, a first optical detector includes a first light receiving section which receives the converged first beam and a second light receiving section which receives the converged second beam, and the first optical detector detects a relative inclination angle between an end face of a solid immersion lens and a surface of the optical recording medium based on a difference in quantities of received light between the first light receiving section and the second light receiving section.
摘要翻译：提供能够可靠且准确地检测固体浸没透镜的端面与光记录介质的表面之间的相对倾斜角度的光学拾取器，倾斜角度检测方法，光学信息装置和信息处理装置。会聚位置修改单元根据光记录介质的层来修改第一光束和第二光束的会聚状态，第一光检测器包括接收会聚的第一光束的第一光接收部分和接收第一光接收部分的第二光接收部分，会聚第二光束，并且第一光学检测器基于第一光接收部分和第二光线之间的接收光量的差异来检测固体浸没透镜的端面与光记录介质的表面之间的相对倾斜角度接收部分。

73. 发明授权

US07079456B2 Optical recording head capable of correcting spherical aberration 失效
标题翻译：能够校正球面像差的光学记录头
公开(公告)号：US07079456B2
公开(公告)日：2006-07-18
申请号：US10613672
申请日：2003-07-03
申请人： Hidenori Wada , Yasuhiro Tanaka , Hideki Hayashi , Sadao Mizuno
发明人： Hidenori Wada , Yasuhiro Tanaka , Hideki Hayashi , Sadao Mizuno
IPC分类号： G11B7/95
CPC分类号： G11B7/1378 , G11B7/1392 , G11B7/13925 , G11B7/13927 , G11B2007/0006
摘要： An optical element having a high capture efficiency and rim intensity is provided. The optical element includes a central axis, a first curved surface extending in the transverse direction with respect to the central axis, a second curved surface extending in the transverse direction with respect to the central axis, and a peripheral surface extending between the first curved surface and the second curved surface. Light is refracted from the time light is incident on the first curved surface to the time the light is emitted from the second curved surface. Thereby, a light intensity distribution of the light emitted from the second curved surface and a light intensity distribution of the light incident on the first curved surface are different from each other, and a rim intensity improvement rate R, which is a rate of the rim intensity of the emitted light with respect to the rim intensity of the incident light is 1.07 or more and 1.5 or less, in which the rim intensity represents a ratio of the central intensity to the peripheral intensity.
摘要翻译：提供具有高捕获效率和边缘强度的光学元件。光学元件包括中心轴线，相对于中心轴线在横向方向上延伸的第一弯曲表面，相对于中心轴线沿横向方向延伸的第二弯曲表面，以及在第一弯曲表面和第二曲面。光从第一弯曲表面入射到光从第二弯曲表面发射的时间被折射。由此，从第二曲面发出的光的光强度分布和入射在第一曲面上的光的光强度分布彼此不同，作为轮缘的速度的轮辋强度提高率R 相对于入射光的边缘强度的发射光的强度为1.07以上且1.5以下，其中边缘强度表示中心强度与周边强度的比率。

74. 发明申请

US20050058052A1 Optical head and optical recording and reproducing apparatus 失效
标题翻译：光头和光记录和再现装置
公开(公告)号：US20050058052A1
公开(公告)日：2005-03-17
申请号：US10817836
申请日：2004-04-06
申请人： Hidenori Wada , Tomotada Kamei , Sadao Mizuno , Hideki Hayashi
发明人： Hidenori Wada , Tomotada Kamei , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/09 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1263 , G11B7/1378 , G11B7/1381 , G11B7/13922 , G11B2007/0006
摘要： An optical head is provided with: an objective-lens-use opening that determines an aperture of the objective lens; a light-source light-quantity controlling opening that aperture-controls light that has been separated by the light separation device; a light detector that receives light that has been aperture-controlled by the light-source light-quantity controlling opening; and a light detector that receives light that has been reflected by the optical recording medium, and has an arrangement in which: the length of the optical light path from the spherical aberration correcting device to the objective-lens-use opening is made virtually the same as a length of the optical light path from the spherical aberration correcting device to the light-source light-quantity controlling opening, and the aperture of the light-source light-quantity controlling opening has virtually the same size as the aperture of the objective-lens-use opening. The objective of the present invention is to provide an optical head in which a signal outputted from the light quantity detection device is unchanged even when the spherical aberration correcting device is driven so that by using this signal, the quantity of light from the light source is set to an appropriate value.
摘要翻译：光学头设置有：确定物镜孔径的物镜使用开口; 光源光量控制开口，其对由所述光分离装置分离的光进行开光控制; 光检测器，其接收由光源光量控制开口进行了光圈控制的光; 以及光检测器，其接收由光记录介质反射的光，并且具有以下配置：使从球面像差校正装置到物镜使用开口的光路的长度基本上相同作为从球面像差校正装置到光源光量控制开口的光路的长度，并且光源光量控制开口的开口具有与物镜光源控制开口的孔径几乎相同的尺寸，透镜使用开口。本发明的目的是提供一种光头，其中从光量检测装置输出的信号即使在球面像差校正装置被驱动时也不变，从而通过使用该信号，来自光源的光量是设置为适当的值。

75. 发明授权

US5347504A Optical disk apparatus for optically recording or reproducing information on an optical recording medium 失效
标题翻译：用于在光学记录介质上光学记录或再现信息的光盘装置
公开(公告)号：US5347504A
公开(公告)日：1994-09-13
申请号：US993384
申请日：1992-12-18
申请人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
发明人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0045 , G11B7/0943
摘要： An optical disk apparatus includes a photodetector divided into eight segments which receive the laser beam reflected from the optical disk and produce signals based on the laser beam sport thereon. In this apparatus, these eight segments are combined in several patterns for the recorded information reproduction, the tracking error detection, and the focus error detection, respectively. For the recorded information reproduction, eight segments are used as combined in three segment cells RC1, RC2, and RC3 which extend in a direction parallel to each other such that the segment cell RC1 is in center and is sandwitched by other segment cell RC2 and RC3. The segment cells RC1, RC2, and RC3 are located perpendicular to the recording track of the optical disk and produce three signals C, R, and L indicative of the laser beam intensity of the laser beam spot thereon, respectively. Thus obtained signals C is multiplied by a constant K and then added to the other signals R and L. By selecting suitable value as the constant K, the crosstalk component in the reproduced signal can be reduced.
摘要翻译：光盘装置包括被分成八个部分的光电检测器，其接收从光盘反射的激光束并基于其上的激光束运动产生信号。在这种装置中，这八个段分别以记录信息再现，跟踪误差检测和聚焦误差检测的多种模式组合。对于记录的信息再现，八个段被组合在三个分段单元RC1，RC2和RC3中，它们在彼此平行的方向上延伸，使得分段单元RC1处于中心并被其它分段单元RC2和RC3 。分段单元RC1，RC2和RC3垂直于光盘的记录轨道定位，并分别产生表示激光束点的激光束强度的三个信号C，R和L。这样获得的信号C乘以常数K，然后加到其他信号R和L.通过选择合适的值作为常数K，可以减少再现信号中的串扰分量。

76. 发明授权

US07254107B2 Optical head and optical recording and reproducing apparatus 失效
标题翻译：光头和光记录和再现装置
公开(公告)号：US07254107B2
公开(公告)日：2007-08-07
申请号：US10817836
申请日：2004-04-06
申请人： Hidenori Wada , Tomotada Kamei , Sadao Mizuno , Hideki Hayashi
发明人： Hidenori Wada , Tomotada Kamei , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00
CPC分类号： G11B7/1263 , G11B7/1378 , G11B7/1381 , G11B7/13922 , G11B2007/0006
摘要： An optical head is provided with: an objective-lens-use opening that determines an aperture of the objective lens; a light-source light-quantity controlling opening that aperture-controls light that has been separated by the light separation device; a light detector that receives light that has been aperture-controlled by the light-source light-quantity controlling opening; and a light detector that receives light that has been reflected by the optical recording medium, and has an arrangement in which: the length of the optical light path from the spherical aberration correcting device to the objective-lens-use opening is made virtually the same as a length of the optical light path from the spherical aberration correcting device to the light-source light-quantity controlling opening, and the aperture of the light-source light-quantity controlling opening has virtually the same size as the aperture of the objective-lens-use opening. The objective of the present invention is to provide an optical head in which a signal outputted from the light quantity detection device is unchanged even when the spherical aberration correcting device is driven so that by using this signal, the quantity of light from the light source is set to an appropriate value.
摘要翻译：光学头设置有：确定物镜孔径的物镜使用开口; 光源光量控制开口，其对由所述光分离装置分离的光进行开光控制; 光检测器，其接收由光源光量控制开口进行了光圈控制的光; 以及光检测器，其接收由光记录介质反射的光，并且具有以下配置：使从球面像差校正装置到物镜使用开口的光路的长度基本上相同作为从球面像差校正装置到光源光量控制开口的光路的长度，并且光源光量控制开口的开口具有与物镜光源控制开口的孔径几乎相同的尺寸，透镜使用开口。本发明的目的是提供一种光头，其中从光量检测装置输出的信号即使在球面像差校正装置被驱动时也不变，从而通过使用该信号，来自光源的光量是设置为适当的值。

77. 发明授权

US06532202B1 Optical element, optical head and optical recording reproducing apparatus 有权
标题翻译：光学元件，光学头和光学记录再生装置
公开(公告)号：US06532202B1
公开(公告)日：2003-03-11
申请号：US09611575
申请日：2000-07-07
申请人： Hidenori Wada , Shin-ichi Kadowaki , Hiroaki Yamamoto , Tetsuo Saimi , Daisuke Ogata , Naoya Hotta , Sadao Mizuno
发明人： Hidenori Wada , Shin-ichi Kadowaki , Hiroaki Yamamoto , Tetsuo Saimi , Daisuke Ogata , Naoya Hotta , Sadao Mizuno
IPC分类号： G11B700
CPC分类号： G11B7/13925 , G02F1/133502 , G02F1/134309 , G02F2203/18 , G11B7/0956 , G11B7/1369 , G11B7/13927
摘要： An optical element has a phase change layer for changing the phase of light passing therethrough; a plurality of aberration correcting electrodes, arranged on one side of said phase change layer, for correcting optical aberrations, each of said aberration correcting electrodes being split into a plurality of regions; an insulating film interposed between said aberration correcting electrodes; and a specific electrode arranged on the other side of said phase change layer, and wherein: said aberration correcting electrodes, at least other than the outermost aberration correcting electrode as viewed from said phase change layer, have openings formed in prescribed positions, and each of said aberration correcting electrodes, other than the innermost aberration correcting electrode, faces said phase change layer through said openings formed in other aberration correcting electrodes.
摘要翻译：光学元件具有用于改变通过其中的光的相位的相变层; 多个像差校正电极，布置在所述相变层的一侧，用于校正光学像差，每个所述像差校正电极被分成多个区域; 介于所述像差校正电极之间的绝缘膜; 以及布置在所述相变层的另一侧的特定电极，并且其中：所述像差校正电极至少在从所述相变层观察的最外侧像差修正电极之外具有在规定位置形成的开口，除最内像素修正电极以外的所述像差校正电极通过形成在其它像差校正电极中的所述开口面向所述相变层。

78. 发明授权

US5430701A Optical disk apparatus for optically recording or reproducing information on an optical recording medium 失效
标题翻译：用于在光学记录介质上光学记录或再现信息的光盘装置
公开(公告)号：US5430701A
公开(公告)日：1995-07-04
申请号：US202822
申请日：1994-02-28
申请人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
发明人： Noboru Ito , Shinichi Tanaka , Hidenori Wada , Sadao Mizuno , Hideki Hayashi
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0045 , G11B7/0943
摘要： An optical disk apparatus includes a photodetector divided into eight segments which receive the laser beam reflected from the optical disk and produce signals based on the laser beam sport thereon. In this apparatus, these eight segments are combined in several patterns for the recorded information reproduction, the tracking error detection, and the focus error detection, respectively. For the recorded information reproduction, eight segments are used as combined in three segment cells RC1, RC2, and RC3 which extend in a direction parallel to each other such that the segment cell RC1 is in center and is sandwitched by other segment cell RC2 and RC3. The segment cells RC1, RC2, and RC3 are located perpendicular to the recording track of the optical disk and produce three signals C, R, and L indicative of the laser beam intensity of the laser beam spot thereon, respectively. Thus obtained signals C is multiplied by a constant K and then added to the other signals R and L. By selecting suitable value as the constant K, the crosstalk component in the reproduced signal can be reduced.
摘要翻译：光盘装置包括被分成八个部分的光电检测器，其接收从光盘反射的激光束并基于其上的激光束运动产生信号。在这种装置中，这八个段分别以记录信息再现，跟踪误差检测和聚焦误差检测的多种模式组合。对于记录的信息再现，八个段被组合在三个分段单元RC1，RC2和RC3中，它们在彼此平行的方向上延伸，使得分段单元RC1处于中心并被其它分段单元RC2和RC3 。分段单元RC1，RC2和RC3垂直于光盘的记录轨道定位，并分别产生表示激光束点的激光束强度的三个信号C，R和L。这样获得的信号C乘以常数K，然后加到其他信号R和L.通过选择合适的值作为常数K，可以减少再现信号中的串扰分量。

79. 发明授权

US07113472B2 Optical head including an active polymer film for switching voltage during recording and reproducing processes 有权
标题翻译：光头包括用于在记录和再现过程中切换电压的活性聚合物膜
公开(公告)号：US07113472B2
公开(公告)日：2006-09-26
申请号：US10096674
申请日：2002-03-12
申请人： Hidenori Wada , Seiji Nishino , Shin-ichi Kadowaki , Hiroaki Yamamoto , Daisuke Ogata
发明人： Hidenori Wada , Seiji Nishino , Shin-ichi Kadowaki , Hiroaki Yamamoto , Daisuke Ogata
IPC分类号： G11B7/00
CPC分类号： G11B7/128 , G02F1/061 , G02F2203/07 , G11B7/1369
摘要： An optical head for recording or reproducing a signal with respect to an optical recording medium, which includes an optical element disposed between a light source and an optical recording medium. The optical element has an optically active polymer film in which an optical rotation property changes with respect to an applied voltage, a pair of conductive transparent thin films for applying a voltage to the optically active polymer film, and a transmittance polarization anisotropic part having a different transmittance with respect to a polarization direction, which is disposed on one of the conductive transparent thin films. By changing the applied voltage to the optically active polymer film, a light quantity of a linearly polarized light transmitted through the optical element can be changed substantially instantaneously. Therefore, the power of light reaching the optical recording medium can be switched substantially instantaneously at the time when switched between recording and reproduction.
摘要翻译：一种用于记录或再现关于光学记录介质的信号的光学头，其包括设置在光源和光学记录介质之间的光学元件。光学元件具有光学旋转特性相对于施加电压发生变化的光学活性聚合物膜，用于向光学活性聚合物膜施加电压的一对导电透明薄膜和具有不同的透射率偏振各向异性部分相对于偏振方向的透射率，其设置在导电透明薄膜之一上。通过将施加的电压改变为光学活性聚合物膜，可以基本上瞬时地改变透过光学元件的线偏振光的光量。因此，到达光记录介质的光的功率可以在记录和再现之间切换时基本瞬时切换。

80. 发明授权

US06987615B2 Diffractive optical element and optical head using the same 有权
$Diffractive optical element and optical head using the same$
标题翻译：衍射光学元件和使用其的光学头
公开(公告)号：US06987615B2
公开(公告)日：2006-01-17
申请号：US10264467
申请日：2002-10-04
申请人： Teruhiro Shiono , Hidenori Wada , Seiji Nishino
发明人： Teruhiro Shiono , Hidenori Wada , Seiji Nishino
IPC分类号： G02B5/18
CPC分类号： G11B7/1275 , G02B5/1871 , G11B2007/0006
摘要： A diffractive optical element emits substantially zero order diffracted light when light with a wavelength of 0.35 μm to 0.45 μm is incident and emits substantially first-order diffracted light when light with a wavelength of 0.6 μm to 0.7 μm is incident. The diffractive optical element includes a substrate and a grating portion formed on the substrate. The grating portion has a step-wise cross section with any one of levels selected from four levels, five levels and six levels. The diffractive optical element emits substantially zero-order diffracted light when light with a first wavelength λ1 satisfying the relationship: 0.35 μm≦λ1≦0.45 μm is incident and emits substantially first-order diffracted light when light with a second wavelength λ2 satisfying the relationship: 0.6 μm≦λ2≦0.7 μm is incident.
摘要翻译：当波长为0.35μm至0.45μm的光入射时，衍射光学元件发射基本为零级的衍射光，并且当入射具有0.6μm至0.7μm波长的光时，发射基本上为一级的衍射光。衍射光学元件包括基板和形成在基板上的光栅部分。光栅部分具有从四个级别，五个级别和六个级别中选择的任何一个级别的逐步横截面。当具有第一波长λ1的满足0.35μm<λλ=0.45μm的关系的光入射时，衍射光学元件发射基本上为零级的衍射光，并且当具有第二波长λ的光时发射基本上一级的衍射光 2满足关系：0.6mum <=λ2 <=0.7μm是入射的。

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