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11. 发明授权

US07583570B2 Optical pickup and disc drive apparatus 失效
标题翻译：光学拾取和光盘驱动装置
公开(公告)号：US07583570B2
公开(公告)日：2009-09-01
申请号：US11155512
申请日：2005-06-20
申请人： Hiroaki Yukawa , Midori Kanaya
发明人： Hiroaki Yukawa , Midori Kanaya
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/0903
摘要： An optical pickup includes a diffracting element having a plurality of regions for dividing the laser light emitted from the light-emitting element into a main beam and pairs of first, second, third, and fourth sub-beams. When the first to fourth sub-beams form first to fourth sub-spots, respectively, in that order along a radial direction on a recording surface of an arbitrary kind of disc-shaped recording medium which does not have the largest track pitch, n is a natural number, and the track pitch is Pa, the distance Da12 between the first and second sub-spots is approximately (2n12−1)×Pa/2, the distance Da34 between the third and fourth sub-spots is approximately (2n34−1)×Pa/2, the distance Da13 between the first and third sub-spots is approximately (2n13−1)×Pa, and the distance Da24 between the second and fourth sub-spots is approximately (2n24−1)×Pa.
摘要翻译：光学拾取器包括具有多个区域的衍射元件，该多个区域用于将从发光元件发射的激光分成主光束和成对的第一，第二，第三和第四子光束。当第一至第四子光束分别以不具有最大轨道间距的任意种类的盘形记录介质的记录表面上沿径向的顺序形成第一至第四子光点时，n为自然数，轨道间距为Pa，第一和第二子点之间的距离Da12约为（2n12-1）×Pa / 2，第三和第四子点之间的距离Da34为大约（2n34-1 ）×Pa / 2，第一和第三子点之间的距离Da13约为（2n13-1）×Pa，第二和第四子点之间的距离Da24约为（2n24-1）×Pa。

12. 发明授权

US08289826B2 Optical pickup and optical disc apparatus 有权
标题翻译：光拾取和光盘装置
公开(公告)号：US08289826B2
公开(公告)日：2012-10-16
申请号：US12977153
申请日：2010-12-23
申请人： Kazuhiko Nemoto , Midori Kanaya , Katsuhiro Seo , Tamotsu Ishii
发明人： Kazuhiko Nemoto , Midori Kanaya , Katsuhiro Seo , Tamotsu Ishii
IPC分类号： G11B7/00
CPC分类号： G11B7/0903 , G11B7/0906 , G11B7/131 , G11B7/1353 , G11B2007/0013
摘要： Provided is an optical pickup including: a light-source emitting a light-beam; an objective lens collecting the light-beam on a desired recording layer among one or two recording layers or more installed in an optical disc and where spirally- or concentrically-shaped tracks are formed; a lens-moving unit moving the objective lens in a tracking direction toward at least an inner-circumference or outer-circumference side; a light splitting device splitting a reflected light-beam into reflected light-beams and propagating the light-beams; a light-detecting device generating central, inner-circumference-side, and outer-circumference-side light-detecting signals according to received light amounts thereof by central, inner-circumference-side, and outer-circumference-side light-detecting areas, receiving central, inner-circumference-side, and outer-circumference-side portions of an image of the reflected light-beam in the radial direction and allowing a signal processing unit to generate a tracking error signal by using the inner-circumference-side and outer-circumference-side-light-detecting signals, being added with a product of a predetermined coefficient and the central-light-detecting signal.
摘要翻译：提供一种光学拾取器，包括：发射光束的光源; 将光束收集在安装在光盘中的一个或两个记录层之中的所需记录层上并且形成螺旋状或同心圆状的轨道的物镜; 透镜移动单元，沿着跟踪方向朝向至少内周或外周侧移动物镜; 将反射光束分解成反射光束并传播光束的分光装置; 光检测装置，其通过中央，内周侧和外周侧光检测区域的接收光量产生中心，内周侧和外周侧光检测信号，在径向上接收反射光束的图像的中心，内周侧和外周侧部分，并且允许信号处理单元通过使用内周侧产生跟踪误差信号，以及外周侧光检测信号，加上预定系数和中央光检测信号的乘积。

13. 发明授权

US07986593B2 Optical integrated device, method for detecting light, optical pickup, and optical disc apparatus 失效
标题翻译：光集成装置，光检测方法，光拾取装置及光盘装置
公开(公告)号：US07986593B2
公开(公告)日：2011-07-26
申请号：US12638124
申请日：2009-12-15
申请人： Takashi Kobayashi , Katsuhiro Seo , Midori Kanaya
发明人： Takashi Kobayashi , Katsuhiro Seo , Midori Kanaya
IPC分类号： G11B7/00
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0912 , G11B7/123 , G11B7/1353 , G11B7/1356 , G11B2007/0006
摘要： An optical integrated device includes a light source; a light splitting-and-guiding section that splits a reflected light beam into two end light beams, a connection light beam, and a residual light beam, and guides the two end light beams and the connection light beam in directions different from a direction of the residual light beam; and a light receiving section that receives the two end light beams and the connection light beam with photodetection devices divided, in the tangential direction, into at least two regions within a range in which the connection light beam is incident, receives the residual light beam with photodetection devices divided, in the tangential direction, into regions having widths corresponding to portions on which the two end light beams are incident, and outputs a detection signal in accordance with an amount of light received with each of the photodetection devices.
摘要翻译：光学集成装置包括光源; 将反射光束分成两个端部光束，连接光束和残余光束的光分离引导部，并且将两端部光束和连接光束沿与剩余光束; 以及光接收部，其将所述两端光束和所述连接光束与所述连接光束以切线方向分成连接光束入射的范围内的至少两个区域，并将所述残留光束光检测装置在切线方向上划分为具有对应于两端光束入射的部分的宽度的区域，并且根据与每个光检测装置接收的光量输出检测信号。

14. 发明申请

US20110164488A1 OPTICAL PICKUP AND OPTICAL DISC APPARATUS 有权
标题翻译：光学拾取和光盘设备
公开(公告)号：US20110164488A1
公开(公告)日：2011-07-07
申请号：US12977153
申请日：2010-12-23
申请人： Kazuhiko Nemoto , Midori Kanaya , Katsuhiro Seo , Tamotsu Ishii
发明人： Kazuhiko Nemoto , Midori Kanaya , Katsuhiro Seo , Tamotsu Ishii
IPC分类号： G11B7/135
CPC分类号： G11B7/0903 , G11B7/0906 , G11B7/131 , G11B7/1353 , G11B2007/0013
摘要： Provided is an optical pickup including: a light-source emitting a light-beam; an objective lens collecting the light-beam on a desired recording layer among one or two recording layers or more installed in an optical disc and where spirally- or concentrically-shaped tracks are formed; a lens-moving unit moving the objective lens in a tracking direction toward at least an inner-circumference or outer-circumference side; a light splitting device splitting a reflected light-beam into reflected light-beams and propagating the light-beams; a light-detecting device generating central, inner-circumference-side, and outer-circumference-side light-detecting signals according to received light amounts thereof by central, inner-circumference-side, and outer-circumference-side light-detecting areas, receiving central, inner-circumference-side, and outer-circumference-side portions of an image of the reflected light-beam in the radial direction and allowing a signal processing unit to generate a tracking error signal by using the inner-circumference-side and outer-circumference-side-light-detecting signals, being added with a product of a predetermined coefficient and the central-light-detecting signal.
摘要翻译：提供一种光学拾取器，包括：发射光束的光源; 将光束收集在安装在光盘中的一个或两个记录层之中的所需记录层上并且形成螺旋状或同心圆状的轨道的物镜; 透镜移动单元，沿着跟踪方向朝向至少内周或外周侧移动物镜; 将反射光束分解成反射光束并传播光束的分光装置; 光检测装置，其通过中央，内周侧和外周侧光检测区域的接收光量产生中心，内周侧和外周侧光检测信号，在径向上接收反射光束的图像的中心，内周侧和外周侧部分，并且允许信号处理单元通过使用内周侧产生跟踪误差信号，以及外周侧光检测信号，加上预定系数和中央光检测信号的乘积。

15. 发明申请

US20100149956A1 OPTICAL INTEGRATED DEVICE, METHOD FOR DETECTING LIGHT, OPTICAL PICKUP, AND OPTICAL DISC APPARATUS 失效
标题翻译：光学集成装置，用于检测光，光学拾取和光盘装置的方法
公开(公告)号：US20100149956A1
公开(公告)日：2010-06-17
申请号：US12638124
申请日：2009-12-15
申请人： Takashi Kobayashi , Katsuhiro Seo , Midori Kanaya
发明人： Takashi Kobayashi , Katsuhiro Seo , Midori Kanaya
IPC分类号： G11B7/00 , G11B7/135
CPC分类号： G11B7/1381 , G11B7/0901 , G11B7/0912 , G11B7/123 , G11B7/1353 , G11B7/1356 , G11B2007/0006
摘要： An optical integrated device includes a light source; a light splitting-and-guiding section that splits a reflected light beam into two end light beams, a connection light beam, and a residual light beam, and guides the two end light beams and the connection light beam in directions different from a direction of the residual light beam; and a light receiving section that receives the two end light beams and the connection light beam with photodetection devices divided, in the tangential direction, into at least two regions within a range in which the connection light beam is incident, receives the residual light beam with photodetection devices divided, in the tangential direction, into regions having widths corresponding to portions on which the two end light beams are incident, and outputs a detection signal in accordance with an amount of light received with each of the photodetection devices.
摘要翻译：光学集成装置包括光源; 将反射光束分成两个端部光束，连接光束和残余光束的光分离引导部，并且将两端部光束和连接光束沿与剩余光束; 以及光接收部，其将所述两端光束和所述连接光束与所述连接光束以切线方向分成连接光束入射的范围内的至少两个区域，并将所述残留光束光检测装置在切线方向上划分为具有对应于两端光束入射的部分的宽度的区域，并且根据与每个光检测装置接收的光量输出检测信号。

16. 发明申请

US20060007811A1 Optical pickup and disc drive apparatus 失效
标题翻译：光学拾取和光盘驱动装置
公开(公告)号：US20060007811A1
公开(公告)日：2006-01-12
申请号：US11155512
申请日：2005-06-20
申请人： Hiroaki Yukawa , Midori Kanaya
发明人： Hiroaki Yukawa , Midori Kanaya
IPC分类号： G11B7/00
CPC分类号： G11B7/1353 , G11B7/0903
摘要： An optical pickup includes a diffracting element having a plurality of regions for dividing the laser light emitted from the light-emitting element into a main beam and pairs of first, second, third, and fourth sub-beams. When the first to fourth sub-beams form first to fourth sub-spots, respectively, in that order along a radial direction on a recording surface of an arbitrary kind of disc-shaped recording medium which does not have the largest track pitch, n is a natural number, and the track pitch is Pa, the distance Da12 between the first and second sub-spots is approximately (2n12−1)×Pa/2, the distance Da34 between the third and fourth sub-spots is approximately (2n34−1)×Pa/2, the distance Da13 between the first and third sub-spots is approximately (2n13−1)×Pa, and the distance Da24 between the second and fourth sub-spots is approximately (2n24−1)×Pa.
摘要翻译：光学拾取器包括具有多个区域的衍射元件，该多个区域用于将从发光元件发射的激光分成主光束和成对的第一，第二，第三和第四子光束。当第一至第四子光束分别以不具有最大轨道间距的任意种类的盘形记录介质的记录表面上沿径向的顺序形成第一至第四子光点时，n为自然数，轨道间距为Pa，第一和第二子点之间的距离Da 12大约为（2n-12-1）×Pa / 2，第三子点与第四子点之间的距离Da S 34大约为（2n-34-1）×Pa / 2，距离Da> 13 < 第一和第三子点近似为（2n-13-1）×Pa，第二和第四子点之间的距离Da Sub2大约为（2n < 24-1）xPa。

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