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1. 发明专利

JP2010198676A Optical pickup and optical disk device 有权
标题翻译：光学拾取和光盘设备
公开(公告)号：JP2010198676A
公开(公告)日：2010-09-09
申请号：JP2009041054
申请日：2009-02-24
申请人： Sony Corp , ソニー株式会社
发明人： NAKANO FUMIAKI , ANDO NOBUHIKO , NISHI NORIAKI , NAKAO TAKASHI , NAKAGAWA HIROAKI , AMATAKU YUTAKA
IPC分类号： G11B7/135 , G11B7/09 , G11B7/13
CPC分类号： G11B7/1353 , G11B7/0903 , G11B7/131 , G11B2007/0013
摘要： PROBLEM TO BE SOLVED: To enable generation of a light receiving signal required for tracking control without being influenced by interlayer stray light, even if an optical disk has many recording layers, and lens shifting occurs. SOLUTION: An optical pickup 17 carries out diffraction of the reflected light beam LR by a hologram element 27, separates reflected light beams LR1E and LR1F containing a push pull component and a lens shifting component into an inner periphery side and an outer peripheral side of a longitudinal direction and makes them advance, makes reflected light beams LR1G and LR1H containing lens shifting components advance to a horizontal direction, respectively, and generates the light receiving signal S by light receiving areas RE and RF, light receiving areas RG and RH, which are isolated only for the distance d2 in lateral direction, and stray light receiving areas which are arranged adjoining the light receiving areas RE, RF, RG and RH respectively in a photodetector 29. An optical disk device 10 eliminates the influence of a stray light pattern W and the lens shifting by computing a tracking error signal STE2 using the light receiving signal S. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：即使光盘具有多个记录层，并且发生透镜偏移，为了能够产生跟踪控制所需的光接收信号而不受层间杂散光的影响。解决方案：光学拾取器17通过全息元件27进行反射光束LR的衍射，将包含推挽元件和透镜移位元件的反射光束LR1E和LR1F分离成内周侧和外周并使其前进，使包含透镜偏移分量的反射光束LR1G和LR1H分别前进到水平方向，并且通过光接收区域RE和RF，光接收区域RG和RH产生光接收信号S 它们分别仅在横向方向上隔开距离d2隔离，并且在光电检测器29中分别邻近光接收区域RE，RF，RG和RH布置的杂散光接收区域。光盘装置10消除了杂散影响光模式W和透镜通过使用光接收信号S计算跟踪误差信号STE2而移位。（C）2010，JPO＆INPIT

2. 发明专利

JP2005327394A Optical pickup and optical disk device 有权
标题翻译：光学拾取和光盘设备
公开(公告)号：JP2005327394A
公开(公告)日：2005-11-24
申请号：JP2004145608
申请日：2004-05-14
申请人： Sony Corp , ソニー株式会社
发明人： NISHI NORIAKI , OKAMOTO YOSHIKI , SEO KATSUHIRO , IMAI SATOSHI , YAMAMOTO KENJI , YONEZAWA TAKESHI , KANETANI MIDORI , NAKAGAWA HIROAKI
IPC分类号： G11B7/135 , G11B7/00 , G11B7/125 , H01S5/00
CPC分类号： G11B7/1369 , G11B7/1378 , G11B7/13925 , G11B2007/0006 , G11B2007/13727 , H01S5/005
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup and an optical disk device for easily coping with the difference in NA in an objective lens. SOLUTION: The optical pickup comprises a laser light source for emitting a laser beam; the objective lens for condensing the laser beam emitted from the laser light source on an optical disk; and an image-forming magnification varying means for changing an image-forming magnification when the laser beam is condensed on the optical disk. By changing the image-forming magnification corresponding to the difference in NA in the objective lens, deterioration in optical coupling efficiency or the like can be prevented. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于容易地处理物镜中的NA差异的光学拾取器和光盘装置。光拾取器包括用于发射激光束的激光光源; 用于将从激光光源发射的激光束聚光在光盘上的物镜; 以及用于当激光束在光盘上聚焦时改变成像倍率的图像形成倍率改变装置。通过改变与物镜中的NA差异相对应的图像形成倍率，可以防止光耦合效率的劣化等。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2014142979A Information recording medium and disc 有权
标题翻译：信息记录媒体和唱片
公开(公告)号：JP2014142979A
公开(公告)日：2014-08-07
申请号：JP2013009294
申请日：2013-01-22
申请人： Sony Corp , ソニー株式会社
发明人： SUZUKI YUICHI , TAKAHASHI KENSAKU , ANDO NOBUHIKO , INOUE TETSUYA , AMATAKU YUTAKA , NAKAGAWA HIROAKI
IPC分类号： G11B7/24082 , G11B7/007
CPC分类号： G11B7/007 , G11B7/0053 , G11B7/24082 , G11B2007/00754
摘要： PROBLEM TO BE SOLVED: To provide an information recording medium which can suppress a decrease in characteristics of an optical disc caused by a phase mismatch of adjacent wobbles.SOLUTION: An information recording medium includes a plurality of wobbled tracks. A phase mismatch range of adjacent wobbles is a portion of a range of one track.
摘要翻译：要解决的问题：提供一种信息记录介质，其可以抑制由相邻摆动的相位失配引起的光盘的特性的降低。解决方案：信息记录介质包括多个摆动的轨道。相邻摆动的相位不匹配范围是一个轨道范围的一部分。

4. 发明专利

JP2010287309A Optical pickup and optical disk device 有权
标题翻译：光学拾取和光盘设备
公开(公告)号：JP2010287309A
公开(公告)日：2010-12-24
申请号：JP2010173769
申请日：2010-08-02
申请人： Sony Corp , ソニー株式会社
发明人： NAKAO TAKASHI , NAKANO FUMIAKI , NISHI NORIAKI , ANDO NOBUHIKO , NAKAGAWA HIROAKI , AMATAKU YUTAKA
IPC分类号： G11B7/09 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To generate a light receiving signal required for tracking control without affected by interlayer stray light. SOLUTION: In an optical disk device, a reflected light beam is diffracted, a reflected light beam comprising of zeroth-order light excluding one part of a region is made to progress almost straightly, it is detected by a light receiving part D1 of a photodetector 49, a light receiving signal is generated, a part reflected light beam of the first-order light is diffracted in the vertical direction respectively, it is received in a light receiving region D2, and the light receiving signal is generated, a part reflected light beam out of first-order light is diffracted to the horizontal direction respectively, it is received in a light receiving region D3 respectively, and the light receiving signal is generated. Thereby, in the optical disk device, a tracking error signal in which influence of stray light patterns W5, W50 formed respectively by interlayer stray beam from a plurality of recording layers is excluded can be generated, then, tracking control can be accurately performed. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：产生跟踪控制所需的光接收信号，而不受层间杂散光的影响。解决方案：在光盘装置中，反射光束被衍射，使除了一部分区域以外的零级光包括的反射光束几乎直线地进行，由光接收部分D1 在光检测器49中，产生光接收信号，一级光的一部分反射光分别沿垂直方向衍射，在受光区D2中被接收，产生光接收信号，一级光中的一部分反射光束分别衍射到水平方向，分别被接收在光接收区域D3中，并且产生光接收信号。因此，在光盘装置中，可以产生排除来自多个记录层的由层间杂散光束分别形成的杂散光图案W5，W50的影响的跟踪误差信号，能够准确地进行追踪控制。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2012003828A Diffraction optical element, optical pickup and optical disk drive 审中-公开
$Diffraction optical element, optical pickup and optical disk drive$
标题翻译：衍射光学元件，光学拾取和光盘驱动器
公开(公告)号：JP2012003828A
公开(公告)日：2012-01-05
申请号：JP2010140710
申请日：2010-06-21
申请人： Sony Corp , ソニー株式会社
发明人： AMATAKU YUTAKA , NISHI NORIAKI , NAKANO FUMIAKI , ANDO NOBUHIKO , NAKAGAWA HIROAKI
IPC分类号： G11B7/135 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To make it possible to perform tracking control with high accuracy even if the center of an optical disk is deviated from the transferring line of an object lens.SOLUTION: A hologram element 32 has, at the time in which an object lens 8A is transferred such that the focal point of outgoing radiation light beam L1 resides between the innermost track groove MIT and the outermost track groove MOT of the optical disc 100, a region 32A including all ranges in which a push-pull part PPI at the inner peripheral side rotates about the center point LRP1 of the reflective light beam LR, a region 32B including all ranges in which a push-pull part PPO at the outer peripheral side rotates about the center point LRP1 of the reflective light beam LR, a region 32C in which the portion of the reflective light beam LR corresponding to the inner peripheral side of the optical disc 100 is irradiated and the push-pull part PP is not included and a region 32D in which the portion of the reflective light beam LR corresponding to the outer peripheral side of the optical disc 100 is irradiated and the push-pull part PP is not included.
摘要翻译：要解决的问题：即使光盘的中心偏离物镜的传送线，也可以高精度地执行跟踪控制。解决方案：全息元件32在转印物镜8A时，出射辐射光束L1的焦点位于最内侧的轨道槽MIT和光盘的最外侧的轨道槽MOT之间， 100是包括内周侧的推挽部PPI围绕反射光束LR的中心点LRP1旋转的全部范围的区域32A，包括所有范围的区域32B，在该区域中，外周侧围绕反射光束LR的中心点LRP1旋转，反射光束LR的与光盘100的内周侧对应的部分被照射的区域32C，推挽部PP为不包括其中照射与光盘100的外周侧对应的反射光束LR的部分的区域32D，并且不包括推挽部分PP。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2010044847A Optical pickup and optical disk system 有权
标题翻译：光学拾取和光盘系统
公开(公告)号：JP2010044847A
公开(公告)日：2010-02-25
申请号：JP2009041055
申请日：2009-02-24
申请人： Sony Corp , ソニー株式会社
发明人： NAKAO TAKASHI , NAKANO FUMIAKI , NISHI NORIAKI , ANDO NOBUHIKO , NAKAGAWA HIROAKI , AMATAKU YUTAKA
IPC分类号： G11B7/135 , G11B7/09
CPC分类号： G11B7/1381 , G11B7/0903 , G11B7/131 , G11B7/1353 , G11B2007/0006 , G11B2007/0013
摘要： PROBLEM TO BE SOLVED: To generate a light reception signal required for tracking control without being affected by interlayer stray light. SOLUTION: An optical disk device 190 calculates a tracking error signal STE3 according to expression (12). In expression (12), an optical pickup 197 removes, when a stray light layer distance dn is within a stray light layer distance range dh1, a rapidly increasing stray light component from a push-pull component by utilizing values obtained from stray light reception regions D52P and D52Q which are substantially proportional to the stray light component included in the push-pull component. As a result, even when the stray light layer distance dn is small and a lens shift occurs, the optical disk device 190 generates the tracking error signal STE3 having no influence of stray light patterns W formed from interlayer stray light beams LN from a plurality of recording layers Y, thereby achieving tracking control with high accuracy. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：产生跟踪控制所需的光接收信号，而不受层间杂散光的影响。解决方案：光盘装置190根据表达式（12）计算跟踪误差信号STE3。在表达式（12）中，光拾取器197当杂散光层距离dn在杂散光层距离范围dh1内时，通过利用从杂散光接收区域获得的值，去除来自推挽成分的杂散光分量 D52P和D52Q，其与包括在推挽组件中的杂散光分量基本成比例。结果，即使当杂散光层距离dn较小并且发生透镜偏移时，光盘装置190生成对从多个层间杂散光束LN形成的杂散光图案W没有影响的跟踪误差信号STE3 记录层Y，从而以高精度实现跟踪控制。版权所有（C）2010，JPO＆INPIT

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