公开(公告)号：US08087038B2

公开(公告)日：2011-12-27

申请号：US11668034

申请日：2007-01-29

申请人： Yasushi Kinoshita ,  Seiichi Katou ,  Katsuhiko Kimura ,  Seiji Ono ,  Naomitsu Kuroda ,  Hidenao Saito

发明人： Yasushi Kinoshita ,  Seiichi Katou ,  Katsuhiko Kimura ,  Seiji Ono ,  Naomitsu Kuroda ,  Hidenao Saito

IPC分类号： G11B7/135

CPC分类号： G11B7/13925 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13927 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An aspect of the invention provides an optical pickup in which an optical axis is not displaced even if ambient temperature is changed. The optical pickup of the invention has an optical unit and an optical pickup case. The optical unit has a lens member having an optical axis, and the optical axis of the lens member is offset to one side from the center of the optical unit. The optical pickup case holds the optical unit from both sides. A thermal expansion amount of the optical unit is absorbed by compression amounts of a first adhesive and a second adhesive such that the optical axis of the lens member is not displaced when the optical unit is thermal expanded.

摘要翻译： 本发明的一个方面提供了一种光学拾取器，其中光轴即使环境温度改变也不会移动。 本发明的光拾取器具有光学单元和光拾取盒。 光学单元具有具有光轴的透镜构件，透镜构件的光轴偏离光学单元的中心一侧。 光拾取器盒从两侧保持光学单元。 光学单元的热膨胀量被第一粘合剂和第二粘合剂的压缩量吸收，使得当光学单元热膨胀时透镜构件的光轴不移位。

公开(公告)号：US07552455B2

公开(公告)日：2009-06-23

申请号：US11229559

申请日：2005-09-20

申请人： Katsuhiko Kimura ,  Seiichi Katou ,  Kazuyuki Fukuda ,  Hidenao Saito

发明人： Katsuhiko Kimura ,  Seiichi Katou ,  Kazuyuki Fukuda ,  Hidenao Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/0932

摘要： The invention can obtain an excellent linear property in a focusing direction and a tracking direction and can obtain a stable operation, in an objective lens driving means of an optical pickup. In an optical pickup reading and writing an information with respect to an optical disc by using an objective lens, a movable portion mounting the objective lens thereon is supported by a support member constituted by a pair of flexible printed circuit boards respectively curved in opposite directions in a parallel direction to an optical axis of the objective lens so as to be movable with respect to a fixed portion, in both side surfaces of the movable portion facing with holding the objective lens therebetween.

摘要翻译： 本发明可以在光学拾取器的物镜驱动装置中获得聚焦方向和跟踪方向上的良好的线性特性并且可以获得稳定的操作。 在通过使用物镜读取和写入关于光盘的信息的光学拾取器中，将物镜安装在其上的可移动部分由支撑部件支撑，该支撑部件由分别在相反方向上弯曲的一对柔性印刷电路板构成 与物镜的光轴平行的方向，以能够相对于固定部分移动的可动部分的两侧表面中，并将物镜保持在其间。

公开(公告)号：US20080189726A1

公开(公告)日：2008-08-07

申请号：US11668034

申请日：2007-01-29

申请人： Yasushi Kinoshita ,  Seiichi Katou ,  Katsuhiko Kimura ,  Seiji Ono ,  Naomitsu Kuroda ,  Hidenao Saito

发明人： Yasushi Kinoshita ,  Seiichi Katou ,  Katsuhiko Kimura ,  Seiji Ono ,  Naomitsu Kuroda ,  Hidenao Saito

IPC分类号： G11B7/00

CPC分类号： G11B7/13925 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13927 ,  G11B2007/0006 ,  G11B2007/13727

摘要： An aspect of the invention provides an optical pickup in which an optical axis is not displaced even if ambient temperature is changed. The optical pickup of the invention has an optical unit and an optical pickup case. The optical unit has a lens member having an optical axis, and the optical axis of the lens member is offset to one side from the center of the optical unit. The optical pickup case holds the optical unit from both sides. A thermal expansion amount of the optical unit is absorbed by compression amounts of a first adhesive and a second adhesive such that the optical axis of the lens member is not displaced when the optical unit is thermal expanded.

摘要翻译： 本发明的一个方面提供了一种光学拾取器，其中光轴即使环境温度改变也不会移动。 本发明的光拾取器具有光学单元和光拾取盒。 光学单元具有具有光轴的透镜构件，透镜构件的光轴偏离光学单元的中心一侧。 光拾取器盒从两侧保持光学单元。 光学单元的热膨胀量被第一粘合剂和第二粘合剂的压缩量吸收，使得当光学单元热膨胀时透镜构件的光轴不移位。

公开(公告)号：US20080100931A1

公开(公告)日：2008-05-01

申请号：US11698106

申请日：2007-01-26

申请人： Yoshihiro Satou ,  Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

发明人： Yoshihiro Satou ,  Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

IPC分类号： G02B7/02

CPC分类号： G02B27/646 ,  G02B7/02

摘要： An objective lens actuator that can accommodate higher density and speed is provided by improving frequency characteristics of an objective lens.The objective lens actuator includes an objective lens, a cylindrical lens holder that holds the objective lens, and a reinforcement part disposed in an opening opposite to the objective lens of the lens holder. The reinforcement part has a size that occupies one third to one half of the cylindrical wall of the lens holder from the end of an aperture along the optical axis. In this range, the high order resonance frequencies of the lens holder can be increased, and therefore, it is possible to obtain an objective lens actuator that can minimize the vibration amplitude at the high order resonance frequencies.

摘要翻译： 可以通过改善物镜的频率特性来提供可以适应较高密度和速度的物镜致动器。 物镜致动器包括物镜，保持物镜的柱面透镜保持器和设置在与透镜保持器的物镜相对的开口中的加强部。 加强部分具有沿着光轴从孔的端部占据透镜保持器的圆柱形壁的三分之一到一半的尺寸。 在该范围内，可以提高透镜架的高次谐振频率，因此可以获得能够使高次谐振频率下的振动振幅最小化的物镜致动器。

公开(公告)号：US08166495B2

公开(公告)日：2012-04-24

申请号：US11668098

申请日：2007-01-29

申请人： Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato ,  Takahiro Yamaguchi

发明人： Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato ,  Takahiro Yamaguchi

IPC分类号： G11B7/00

CPC分类号： G11B7/0933 ,  G11B7/0935

摘要： An optical pickup in which the position of a magnet can be adjusted with respect to a yoke is provided. The optical pickup has an objective lens, a lens holder that holds the objective lens, a magnet disposed opposite to a side surface of the lens holder, and a yoke to the inside of which the magnet is attached. The yoke has an opening at least near the bottom of the magnet, through which the magnet can be visually observed from the outside of the yoke, the bottom being on the side of the yoke that is farther from an optical disc and the top being on the side of the yoke that is closer to the optical disc along the optical axis of the objective lens.

摘要翻译： 提供了一种可以相对于磁轭调节磁体位置的光学拾取器。 光学拾取器具有物镜，保持物镜的透镜保持器，与透镜保持器的侧表面相对设置的磁体以及磁铁安装在其内部的磁轭。 轭具有至少接近磁体底部的开口，通过该开口可以从轭的外部目视观察磁体，底部位于离光盘更远的磁轭侧，顶部位于 轭的侧面沿着物镜的光轴更靠近光盘。

公开(公告)号：US07630150B2

公开(公告)日：2009-12-08

申请号：US11698106

申请日：2007-01-26

申请人： Yoshihiro Satou ,  Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

发明人： Yoshihiro Satou ,  Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

IPC分类号： G02B7/02

CPC分类号： G02B27/646 ,  G02B7/02

摘要： An objective lens actuator that can accommodate higher density and speed is provided by improving frequency characteristics of an objective lens.The objective lens actuator includes an objective lens, a cylindrical lens holder that holds the objective lens, and a reinforcement part disposed in an opening opposite to the objective lens of the lens holder. The reinforcement part has a size that occupies one third to one half of the cylindrical wall of the lens holder from the end of an aperture along the optical axis. In this range, the high order resonance frequencies of the lens holder can be increased, and therefore, it is possible to obtain an objective lens actuator that can minimize the vibration amplitude at the high order resonance frequencies.

摘要翻译： 可以通过改善物镜的频率特性来提供可以适应较高密度和速度的物镜致动器。 物镜致动器包括物镜，保持物镜的柱面透镜保持器和设置在与透镜保持器的物镜相对的开口中的加强部。 加强部分具有沿着光轴从孔的端部占据透镜保持器的圆柱形壁的三分之一到一半的尺寸。 在该范围内，可以提高透镜架的高次谐振频率，因此可以获得能够使高次谐振频率下的振动振幅最小化的物镜致动器。

公开(公告)号：US20070274168A1

公开(公告)日：2007-11-29

申请号：US11668098

申请日：2007-01-29

申请人： Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato ,  Takahiro Yamaguchi

发明人： Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato ,  Takahiro Yamaguchi

IPC分类号： G11B7/00

CPC分类号： G11B7/0933 ,  G11B7/0935

摘要： An optical pickup in which the position of a magnet can be adjusted with respect to a yoke is provided. The optical pickup has an objective lens, a lens holder that holds the objective lens, a magnet disposed opposite to a side surface of the lens holder, and a yoke to the inside of which the magnet is attached. The yoke has an opening at least near the bottom of the magnet, through which the magnet can be visually observed from the outside of the yoke, the bottom being on the side of the yoke that is farther from an optical disc and the top being on the side of the yoke that is closer to the optical disc along the optical axis of the objective lens.

摘要翻译： 提供了一种可以相对于磁轭调节磁体位置的光学拾取器。 光学拾取器具有物镜，保持物镜的透镜保持器，与透镜保持器的侧表面相对设置的磁体以及磁铁安装在其内部的磁轭。 轭具有至少接近磁体底部的开口，通过该开口可以从轭的外部目视观察磁体，底部位于离光盘更远的磁轭侧，顶部位于 轭的侧面沿着物镜的光轴更靠近光盘。

公开(公告)号：US20070079316A1

公开(公告)日：2007-04-05

申请号：US11527412

申请日：2006-09-27

申请人： Manabu Ochi ,  Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

发明人： Manabu Ochi ,  Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

IPC分类号： G11B7/00

CPC分类号： G11B7/0935 ,  G11B7/22

摘要： In an object lens actuator, stiffness of a lens holder is improved and the higher order resonance frequency is sufficiently increased. The stiffness of the lens holder is improved by providing a flat plate perpendicular to the focusing direction between the side wall of a lens holding part and the outer sidewall along the tracking direction at approximately the middle of both ends of the lens holder along the focusing direction.

摘要翻译： 在物镜致动器中，透镜架的刚度提高，高次谐振频率充分提高。 通过在透镜保持部的侧壁沿着跟踪方向设置垂直于聚焦方向的平板，沿着聚焦方向在透镜保持器的两端的大致中间处设置透镜保持器的刚度， 。

公开(公告)号：US07975275B2

公开(公告)日：2011-07-05

申请号：US12014123

申请日：2008-01-15

申请人： Manabu Ochi ,  Katsuhiko Kimura ,  Ryuichiro Mizuno

发明人： Manabu Ochi ,  Katsuhiko Kimura ,  Ryuichiro Mizuno

IPC分类号： G11B7/09

CPC分类号： G11B7/0935

摘要： The present invention has an object to provide an object lens actuator that reduces the amplitude of vibration of an object lens related to a torsional vibration of a lens holder and to enable a disc drive using the same to record information on a disc at high speeds. The above object has been achieved by placing the thickest one of the four walls, which are in an envelope of two opening portions provided in the lens holder and which are perpendicular to a flat plate between the two opening portions, in a position which is opposite to the object lens with respect to the center line between a first support member and a second support member which resiliently support the lens holder therebetween and which is opposite to the object lens with respect to the flat plate.

摘要翻译： 本发明的目的是提供一种减少与透镜架的扭转振动相关的物镜的振动幅度的物镜致动器，并且能够使用该物镜驱动器以高速度将信息记录在盘上。 上述目的已经通过将四个壁中最厚的一个放置在设置在透镜保持器中的两个开口部分的外壳中并且垂直于两个开口部分之间的平板的位置处于相反的位置 相对于第一支撑构件和第二支撑构件之间的中心线相对于物镜相对于物镜相对于物镜弹性地支撑透镜保持器的物镜。

公开(公告)号：US20080172685A1

公开(公告)日：2008-07-17

申请号：US12014123

申请日：2008-01-15

申请人： Manabu OCHI ,  Katsuhiko Kimura ,  Ryuichiro Mizuno

发明人： Manabu OCHI ,  Katsuhiko Kimura ,  Ryuichiro Mizuno

IPC分类号： G11B7/09

CPC分类号： G11B7/0935

摘要： The present invention has an object to provide an object lens actuator that reduces the amplitude of vibration of an object lens related to a torsional vibration of a lens holder and to enable a disc drive using the same to record information on a disc at high speeds. The above object has been achieved by placing the thickest one of the four walls, which are in an envelope of two opening portions provided in the lens holder and which are perpendicular to a flat plate between the two opening portions, in a position which is opposite to the object lens with respect to the center line between a first support member and a second support member which resiliently support the lens holder therebetween and which is opposite to the object lens with respect to the flat plate.

摘要翻译： 本发明的目的是提供一种减少与透镜架的扭转振动相关的物镜的振动幅度的物镜致动器，并且能够使用该物镜驱动器以高速度将信息记录在盘上。 上述目的已经通过将四个壁中最厚的一个放置在设置在透镜保持器中的两个开口部分的外壳中并且垂直于两个开口部分之间的平板的位置处于相反的位置 相对于第一支撑构件和第二支撑构件之间的中心线相对于物镜相对于物镜相对于物镜弹性地支撑透镜保持器的物镜。