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1. 发明申请

US20100135146A1 OPTICAL PICKUP DEVICE AND OPTICAL DISC DEVICE 有权
标题翻译：光学拾取装置和光盘装置
公开(公告)号：US20100135146A1
公开(公告)日：2010-06-03
申请号：US12598779
申请日：2008-04-17
申请人： Jun-iti Asada , Seiji Nishiwaki , Kazuo Momoo
发明人： Jun-iti Asada , Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B7/135
CPC分类号： G11B7/094 , G11B7/1275 , G11B7/131 , G11B7/1353 , G11B7/1381 , G11B2007/0006 , G11B2007/13727
摘要： When first-order diffracted beams leak into a region, which is for receiving only a zeroth-order diffracted beam from an optical disc, due to positional displacement between an objective lens and a hologram element, an offset compensation signal includes an AC component, the offset compensation signal preferably including a DC component only. Accordingly, there may be caused deterioration in a modulation degree of the tracking error (TE) signal. A partial light shielding element 110 is formed on a hologram surface 112a along boundaries between a light receiving region (121a), which receives a zeroth-order diffracted beam, and light receiving regions (121b, 121c), which receive the zeroth-order diffracted beam and first-order diffracted beams, so as to cover the light receiving region (121a). Further, the partial light shielding element 110 shifts phases of transmitted light beams by π, whereby the TE signal is offset-compensated, and the modulation degree can be improved.
摘要翻译：当一级衍射光束由于物镜和全息元件之间的位置偏移而泄漏到仅用于从光盘接收零级衍射光束的区域中时，偏移补偿信号包括AC分量，偏移补偿信号优选地仅包括DC分量。因此，可能导致跟踪误差（TE）信号的调制度的劣化。部分遮光元件110沿着接收零级衍射光束的光接收区域（121a）和接收零级衍射光的受光区域（121b，121c）之间的边界形成在全息图表面112a上光束和一级衍射光束，以覆盖光接收区域（121a）。此外，部分遮光元件110将透射光束的相位移位＆pgr，由此TE信号被偏移补偿，并且可以提高调制度。

2. 发明授权

US08000184B2 Optical pickup device and optical disc device with offset compensation 有权
标题翻译：具有偏移补偿的光学拾取装置和光盘装置
公开(公告)号：US08000184B2
公开(公告)日：2011-08-16
申请号：US12598779
申请日：2008-04-17
申请人： Jun-iti Asada , Seiji Nishiwaki , Kazuo Momoo
发明人： Jun-iti Asada , Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B7/00
CPC分类号： G11B7/094 , G11B7/1275 , G11B7/131 , G11B7/1353 , G11B7/1381 , G11B2007/0006 , G11B2007/13727
摘要： When first-order diffracted beams leak into a region, which is for receiving only a zeroth-order diffracted beam from an optical disc, due to positional displacement between an objective lens and a hologram element, an offset compensation signal includes an AC component, the offset compensation signal preferably including a DC component only. Accordingly, there may be caused deterioration in a modulation degree of the tracking error (TE) signal. A partial light shielding element 110 is formed on a hologram surface 112a along boundaries between a light receiving region (121a), which receives a zeroth-order diffracted beam, and light receiving regions (121b, 121c), which receive the zeroth-order diffracted beam and first-order diffracted beams, so as to cover the light receiving region (121a). Further, the partial light shielding element 110 shifts phases of transmitted light beams by π, whereby the TE signal is offset-compensated, and the modulation degree can be improved.
摘要翻译：当一级衍射光束由于物镜和全息元件之间的位置偏移而泄漏到仅用于从光盘接收零级衍射光束的区域中时，偏移补偿信号包括AC分量，偏移补偿信号优选仅包括DC分量。因此，可能导致跟踪误差（TE）信号的调制度的劣化。部分遮光元件110沿着接收零级衍射光束的光接收区域（121a）和接收零级衍射光的受光区域（121b，121c）之间的边界形成在全息图表面112a上光束和一级衍射光束，以覆盖光接收区域（121a）。此外，部分遮光元件110将透射光束的相位移位＆pgr，由此TE信号被偏移补偿，并且可以提高调制度。

3. 发明申请

US20050226120A1 Information processing device and information recording medium 失效
标题翻译：信息处理装置和信息记录介质
公开(公告)号：US20050226120A1
公开(公告)日：2005-10-13
申请号：US11100028
申请日：2005-04-06
申请人： Seiji Nishiwaki , Kazuo Momoo
发明人： Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G03H1/04 , G03H1/22 , G11B7/00 , G11B7/0065 , G11B7/125
CPC分类号： G11B7/0065 , G03H2001/0415 , G03H2250/42 , G11B7/128
摘要： There is provided an information processing device which is capable of suppressing generation of stray light at the time of recording and reproduction of information, thus enabling quality information recording and reproduction. The information processing device includes: a radiation light source 2; and a converging section for converging rays emitted from the light source toward an information recording medium having a photosensitive layer 11b, wherein the converging section splits the rays into first and second rays 3′ and 3 respectively traveling through first and second spaces as divided by a plane at least containing a point optical axis L, and converges the first and second rays 3′ and 3 onto first and second points 12′ and 12 in the information recording medium 11, the photosensitive layer 11b being interposed between the first and second points 12′ and 12. Between the first and second points 12′ and 12, the first and second rays 3′ and 3 interfere with each other to form interference fringes, the interference fringes representing information to be recorded in the photosensitive layer 11b of the information recording medium 11.
摘要翻译：提供了一种信息处理装置，其能够抑制在记录和再现信息时的杂散光的产生，从而实现质量信息的记录和再现。信息处理装置包括：辐射光源2; 以及会聚部分，用于将从光源发射的光线朝向具有感光层11b的信息记录介质会聚，其中会聚部分将光线分裂成分别穿过第一和第二空间的第一和第二光线3'和3，除以至少包含点光轴L的平面，并且将第一和第二光线3'和3收敛在信息记录介质11中的第一和第二点12'和12上，感光层11b介于第一和第二 12点和12点。在第一和第二点12'和12之间，第一和第二射线3'和3彼此干涉以形成干涉条纹，干涉条纹表示要记录在信息记录介质11的感光层11b中的信息。

4. 发明授权

US06920101B2 Optical information processor and optical element 有权
公开(公告)号：US06920101B2
公开(公告)日：2005-07-19
申请号：US10616859
申请日：2003-07-10
申请人： Youichi Saitoh , Junichi Asada , Yuichi Takahashi , Seiji Nishiwaki , Kenji Nagashima , Kazuo Momoo , Junji Nagaoka
发明人： Youichi Saitoh , Junichi Asada , Yuichi Takahashi , Seiji Nishiwaki , Kenji Nagashima , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B7/09 , G11B7/135 , G11B7/00
CPC分类号： G11B7/139 , G11B7/1353
摘要： An optical disk device has an aperture of an objective lens in an incoming path of a beam from a semiconductor laser to an optical disk formed larger than an aperture in a return path from the optical disk or an aperture is varied in recording and in reproduction. This configuration improves recording/reproducing ability since light is focused on an optical disk with high numerical aperture. In addition, since reflected light from the optical disk is detected with low numerical aperture, margins for tilt and defocus are not reduced. Furthermore, since unnecessary signal components contained in the reflected light can be eliminated, a S/N (signal-to-noise ratio) of an information signal also increases. Thus, a high-performance optical disk device can be obtained. Alternatively, by varying the aperture of an objective lens in recording and in reproduction, an optical disk device in which recording density and recording quality are increased without deteriorating reproduction quality can be obtained.

5. 发明授权

US06704254B1 Optical disk device, control method of optical system, medium, and information aggregate 有权
标题翻译：光盘装置，光学系统的控制方法，介质和信息聚合
公开(公告)号：US06704254B1
公开(公告)日：2004-03-09
申请号：US09698904
申请日：2000-10-27
申请人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
发明人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B700
CPC分类号： G11B7/0956 , G11B7/0901 , G11B7/0938 , G11B7/0943
摘要： This optical disk device includes an objective lens (7) for condensing radiated light from a light source on an optical disk (8), an optical detecting unit for detecting reflected light from the optical disk (8), and a control unit for performing the tracking control and/or the tilt control of the objective lens (7) by utilizing the output from the optical detecting unit, in which the control unit uses the off-track quantity and/or the tilt quantity of the objective lens (7) when performing the above described control.
摘要翻译：该光盘装置包括用于将来自光源的辐射光聚焦在光盘（8）上的物镜（7），用于检测来自光盘（8）的反射光的光学检测单元，以及用于执行通过利用来自光学检测单元的输出来跟踪控制和/或物镜（7）的倾斜控制，其中控制单元使用物镜（7）的越野量和/或倾斜量，当执行上述控制。

6. 发明授权

US06618343B1 Optical information processor and optical element 有权
标题翻译：光信息处理器和光学元件
公开(公告)号：US06618343B1
公开(公告)日：2003-09-09
申请号：US09436847
申请日：1999-11-09
申请人： Youichi Saitoh , Junichi Asada , Yuichi Takahashi , Seiji Nishiwaki , Kenji Nagashima , Kazuo Momoo , Junji Nagaoka
发明人： Youichi Saitoh , Junichi Asada , Yuichi Takahashi , Seiji Nishiwaki , Kenji Nagashima , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B700
CPC分类号： G11B7/139 , G11B7/1353
摘要： An optical disk device has an aperture of an objective lens in an incoming path of a beam from a semiconductor laser to an optical disk formed larger than an aperture in a return path from the optical disk or an aperture is varied in recording and in reproduction. This configuration improves recording/reproducing ability since light is focused on an optical disk with high numerical aperture. In addition, since reflected light from the optical disk is detected with low numerical aperture, margins for tilt and defocus are not reduced. Furthermore, since unnecessary signal components contained in the reflected light can be eliminated, a S/N (signal-to-noise ratio) of an information signal also increases. Thus, a high-performance optical disk device can be obtained. Alternatively, by varying the aperture of an objective lens in recording and in reproduction, an optical disk device in which recording density and recording quality are increased without deteriorating reproduction quality can be obtained.
摘要翻译：光盘装置在从半导体激光器到形成大于来自光盘的返回路径的孔径的光盘的入射路径中具有物镜的孔径，或者在记录和重放中变化。这种配置改善了记录/再现能力，因为光聚焦在具有高数值孔径的光盘上。此外，由于以较低的数值孔径检测出来自光盘的反射光，因此不会降低用于倾斜和散焦的余量。此外，由于可以消除包含在反射光中的不必要的信号分量，信息信号的S / N（信噪比）也增加。因此，可以获得高性能光盘装置。或者，通过在记录和再现中改变物镜的孔径，可以获得其中增加记录密度和记录质量而不恶化再现质量的光盘装置。

7. 发明授权

US07468939B2 Optical disk apparatus with phase difference offset 有权
标题翻译：具有相位偏移的光盘设备
公开(公告)号：US07468939B2
公开(公告)日：2008-12-23
申请号：US10552193
申请日：2004-04-06
申请人： Hiroaki Matsumiya , Seiji Nishiwaki , Kazuo Momoo
发明人： Hiroaki Matsumiya , Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B7/085
CPC分类号： G11B7/0903 , G11B7/094 , G11B7/0943
摘要： An optical pickup device capable of correcting an off-tracking which is ascribable to a phase shift of a differential push-pull signal waveform, even when an optical disk or an objective lens is tilted along a radial direction of the optical disk, so that stable tracking control can be performed; and, an optical disk apparatus comprising such an optical pickup device.
摘要翻译：即使当光盘或物镜沿着光盘的径向方向倾斜时，能够校正归因于差分推挽信号波形的相移的偏离跟踪的光拾取装置，使得稳定可执行跟踪控制; 以及包括这种光学拾取装置的光盘装置。

8. 发明授权

US07330418B2 Optical disk with plural signal mark positions in a direction substantially perpendicular to tracks 失效
标题翻译：光盘在与轨迹大致垂直的方向上具有多个信号标记位置
公开(公告)号：US07330418B2
公开(公告)日：2008-02-12
申请号：US11072292
申请日：2005-03-07
申请人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
发明人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B7/00
CPC分类号： G11B7/24085 , G11B7/007 , G11B7/00718 , G11B7/0901 , G11B7/0943 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/1369 , G11B7/1381 , G11B7/24088
摘要： An optical disk device has a light source which emits light; and light converging means of, in each of signal mark forming regions, each of lands, or each of grooves of an optical disk, converging the light from the light source onto a signal surface of the optical disk with selectively positioning a signal mark at any one of plural positions which are arranged in a direction that is substantially perpendicular to tracks, each of the signal mark forming regions surrounded by adjacent two of boarder lines which are between two the tracks on the signal surface of the optical disk, and which are substantially parallel to the tracks, and each of which substantially divides an area between adjacent tracks in two parts.
摘要翻译：光盘装置具有发光的光源; 以及在每个信号标记形成区域中的光会聚装置，每个光阑的凹槽或每个凹槽中，将来自光源的光会聚到光盘的信号表面上，从而选择性地将信号标记定位在任何多个位置中的一个被布置在基本上垂直于轨道的方向上，每个信号标记形成区被围绕在光盘的信号表面上的两个轨道之间的相邻的两个边缘线包围，并且基本上平行于轨道，并且其中的每一个在两个部分中基本上划分相邻轨道之间的区域。

9. 发明申请

US20060077858A1 Wavelength plate, optical element, and optical pickup 失效
标题翻译：波长板，光学元件和光学拾取器
公开(公告)号：US20060077858A1
公开(公告)日：2006-04-13
申请号：US11237197
申请日：2005-09-28
申请人： Jun-ichi Asada , Seiji Nishiwaki , Kazuo Momoo
发明人： Jun-ichi Asada , Seiji Nishiwaki , Kazuo Momoo
IPC分类号： G11B7/00
CPC分类号： G11B7/1365 , G11B7/1369 , G11B2007/0006
摘要： There is provided, in an optical disk apparatus which is capable of recording data to or reading data from a plurality of types of optical disks, a wavelength plate and an optical pickup which can reduce deterioration in signal quality even in the presence of a large birefringence of the substrate of an optical disk. A wavelength plate 6 according to the present invention is a wavelength plate to be placed in an optical path through which rays of a plurality of wavelengths travel back and forth, the plurality of wavelengths including a ray having a wavelength λ. The wavelength plate includes a two-dimensional array of a plurality of birefringent regions, the birefringent regions including first regions D1 and second regions D2 having different optic axis directions from each other. The relationship 240°≦Δ1≦300° is true, where Δ1 is a retardation of the wavelength plate 6 for the ray of the wavelength λ.
摘要翻译：在能够将数据记录到或从多种类型的光盘读取数据的光盘装置中，提供了即使存在大的双折射也能够降低信号质量劣化的波长板和光学拾取器的光盘的基板。根据本发明的波长板6是放置在多个波长的光线前后移动的光路中的波长板，多个波长包括具有波长λ的射线。波长板包括多个双折射区域的二维阵列，双折射区域包括具有与每个双折射区域不同的光轴方向的第一区域D 1 1和第二区域D 2＆lt; 2＆gt; 其他。对于波长λ的光线，相位差240°<=> 1°<= 300°为真，其中Δ1≤1是波长板6的延迟。

10. 发明申请

US20050157634A1 Optical disk device, optical disk, data recording method, and data reproducing method 失效
标题翻译：光盘装置，光盘，数据记录方法和数据再现方法
公开(公告)号：US20050157634A1
公开(公告)日：2005-07-21
申请号：US11072292
申请日：2005-03-07
申请人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
发明人： Seiji Nishiwaki , Kazuo Momoo , Junji Nagaoka
IPC分类号： G11B7/24 , G11B7/004 , G11B7/007 , G11B7/013 , G11B7/09 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/24085 , G11B7/007 , G11B7/00718 , G11B7/0901 , G11B7/0943 , G11B7/131 , G11B7/133 , G11B7/1353 , G11B7/1369 , G11B7/1381 , G11B7/24088
摘要： An optical disk device has a light source which emits light; and light converging means of, in each of signal mark forming regions, each of lands, or each of grooves of an optical disk, converging the light from the light source onto a signal surface of the optical disk with selectively positioning a signal mark at any one of plural positions which are arranged in a direction that is substantially perpendicular to tracks, each of the signal mark forming regions surrounded by adjacent two of boarder lines which are between two the tracks on the signal surface of the optical disk, and which are substantially parallel to the tracks, and each of which substantially divides an area between adjacent tracks in two parts.
摘要翻译：光盘装置具有发光的光源; 以及在每个信号标记形成区域中的光会聚装置，每个光阑的凹槽或每个凹槽中，将来自光源的光会聚到光盘的信号表面上，并选择性地将信号标记定位在任何多个位置中的一个被布置在基本上垂直于轨道的方向上，每个信号标记形成区被围绕在光盘的信号表面上的两个轨道之间的相邻的两个边缘线包围，并且基本上平行于轨道，并且其中的每一个在两个部分中基本上划分相邻轨道之间的区域。

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