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。

公开(公告)号：US08000183B2

公开(公告)日：2011-08-16

申请号：US12255077

申请日：2008-10-21

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0932 ,  G11B7/0935

摘要： The present invention provides an object lens actuator, an optical pickup, and an optical disk drive, which can increase the size of the object lens actuator driving a lens holder in the tangential tilt direction, and drive and control the lens holder with a small amount of drive current.An object lens actuator comprising a lens holder having an object lens and a first coil; a first magnet fixed to a yoke; plural elastic support parts for supporting said lens holder with a first fulcrum; a moving part for supporting said elastic support parts with a second fulcrum different from said first fulcrum, and a fixed part having a moving mechanism for moving said moving part, wherein said first coil and said first magnet constitute a first magnetic circuit, said first magnetic circuit makes said lens holder movable in a focusing direction, a tracking direction and a radial tilt direction of an optical disk for read/write, and said moving mechanism makes said moving part movable.

摘要翻译： 本发明提供一种物镜驱动器，光拾取器和光盘驱动器，其可以增加沿切线倾斜方向驱动透镜保持器的物镜致动器的尺寸，并且以少量驱动和控制透镜保持器 的驱动电流。 一种物镜致动器，包括具有物镜和第一线圈的透镜保持器; 固定到轭的第一磁体; 用于以第一支点支撑所述透镜支架的多个弹性支撑部件; 用于以不同于所述第一支点的第二支点支撑所述弹性支撑部分的移动部件和具有用于移动所述移动部件的移动机构的固定部分，其中所述第一线圈和所述第一磁体构成第一磁路，所述第一磁体 电路使得所述透镜架能够在用于读/写的光盘的聚焦方向，跟踪方向和径向倾斜方向上移动，并且所述移动机构使得所述移动部件可移动。

公开(公告)号：US20100149954A1

公开(公告)日：2010-06-17

申请号：US12632891

申请日：2009-12-08

申请人： Yoshihiro SATO ,  Hidenao Saito ,  Seiichi Kato ,  Jun Hato ,  Ryuichiro Mizuno ,  Katsuhiko Kimura

发明人： Yoshihiro SATO ,  Hidenao Saito ,  Seiichi Kato ,  Jun Hato ,  Ryuichiro Mizuno ,  Katsuhiko Kimura

IPC分类号： G11B7/00

CPC分类号： G11B7/0932 ,  G11B7/0933 ,  G11B7/22

摘要： An objective lens actuator 25, for driving an objective lens 1 for focusing lights upon a recoding surface of an optical disc, comprises a moving part 2, which comprises the objective lens 1 and a coil; a magnet, which is fixed on a yoke and drives the moving part 2; a plural number of elastic support parts, each of which supports the moving part 2 at an end thereof; a first fixing portion 5a and a second fixing portion 5b, which fix other ends of the plural number of elastic support parts 4 and are disposed opposite to each other in a focus direction; and a moving mechanism 6, which is provided on the first and second fixing portion 5a and 5b, so that the first and second fixing portions 5a and 5b can move in the focus direction, relatively, and thereby providing the objective lens actuator 25 enabling to reduce the dynamic relative tilt between the optical disc and the objective lens 1 (i.e., reducing the tilt of the objective lens 1 in the tangential direction when operating), as well as, an optical pickup and an optical disc drive.

摘要翻译： 用于驱动用于将光聚焦在光盘的记录表面上的物镜1的物镜致动器25包括包括物镜1和线圈的移动部分2; 磁体，其固定在磁轭上并驱动移动部件2; 多个弹性支撑部件，每个弹性支撑部件在其一端支撑移动部件2; 第一固定部分5a和第二固定部分5b，其固定多个弹性支撑部分4的另一端，并且在聚焦方向上彼此相对设置; 以及设置在第一和第二固定部分5a和5b上的移动机构6，使得第一和第二固定部分5a和5b可相对于聚焦方向移动，从而使物镜致动器25能够 降低光盘和物镜1之间的动态相对倾斜度（即，当操作时减小物镜1在切线方向上的倾斜度）以及光拾取器和光盘驱动器。

公开(公告)号：US07697381B2

公开(公告)日：2010-04-13

申请号：US11527478

申请日：2006-09-27

申请人： Seiichi Katou ,  Katsuhiko Kimura ,  Ryuichiro Mizuno ,  Hidenao Saito ,  Jun Hato

发明人： Seiichi Katou ,  Katsuhiko Kimura ,  Ryuichiro Mizuno ,  Hidenao Saito ,  Jun Hato

IPC分类号： G11B7/00

CPC分类号： G11B7/0932 ,  G11B7/0935 ,  G11B7/0956

摘要： An object lens drive unit in which an undesired displacement or inclination of an object lens with respect to an optical disc is reduced. The position at which a lens holder for the object lens is supported by a pair of rod-shaped elastic support members in the focusing direction substantially coincides with the center of the tracking coil in the focusing direction.

摘要翻译： 物镜驱动单元，其中物镜相对于光盘的不期望的位移或倾斜减小。 用于物镜的透镜保持器在聚焦方向上被一对棒状弹性支撑构件支撑的位置基本上与聚焦方向上的跟踪线圈的中心重合。

公开(公告)号：US20110149713A1

公开(公告)日：2011-06-23

申请号：US12967104

申请日：2010-12-14

申请人： Yoshihiro Sato ,  Hidenao Saito ,  Jun Hato ,  Ryuichiro Mizuno ,  Katsuhiko Kimura ,  Seiichi Kato

发明人： Yoshihiro Sato ,  Hidenao Saito ,  Jun Hato ,  Ryuichiro Mizuno ,  Katsuhiko Kimura ,  Seiichi Kato

IPC分类号： G11B7/135

CPC分类号： G11B7/0933 ,  G11B7/0932 ,  G11B7/0935

摘要： In an optical pickup equipped with a semiconductor laser, electro-optical components such as a lens, and an objective lens drive device, the objective lens drive device includes objective lenses, a holder holding the objective lenses, a focusing coil, and tracking coils. The focusing coil is wound in parallel to the optical surface of the objective lens, and formed in a parallelogram shape having inclined portions provided near the tracking coils. The two tracking coils are placed on diagonal portions of the lens holder.

摘要翻译： 在配备有半导体激光器的光学拾取器，诸如透镜的电光部件和物镜驱动装置中，物镜驱动装置包括物镜，保持物镜的保持器，聚焦线圈和跟踪线圈。 聚焦线圈与物镜的光学表面平行地缠绕，并且形成为具有设置在跟踪线圈附近的倾斜部分的平行四边形。 两个跟踪线圈被放置在透镜架的对角部分上。

公开(公告)号：US20070189129A1

公开(公告)日：2007-08-16

申请号：US11527478

申请日：2006-09-27

申请人： Seiichi Katou ,  Katsuhiko Kimura ,  Ryuichiro Mizuno ,  Hidenao Saito ,  Jun Hato

发明人： Seiichi Katou ,  Katsuhiko Kimura ,  Ryuichiro Mizuno ,  Hidenao Saito ,  Jun Hato

IPC分类号： G11B7/00

CPC分类号： G11B7/0932 ,  G11B7/0935 ,  G11B7/0956

摘要： An object lens drive unit in which an undesired displacement or inclination of an object lens with respect to an optical disc is reduced. The position at which a lens holder for the object lens is supported by a pair of rod-shaped elastic support members in the focusing direction substantially coincides with the center of the tracking coil in the focusing direction.

摘要翻译： 物镜驱动单元，其中物镜相对于光盘的不期望的位移或倾斜减小。 用于物镜的透镜保持器在聚焦方向上被一对棒状弹性支撑构件支撑的位置基本上与聚焦方向上的跟踪线圈的中心重合。

公开(公告)号：US08743668B2

公开(公告)日：2014-06-03

申请号：US12967104

申请日：2010-12-14

申请人： Yoshihiro Sato ,  Hidenao Saito ,  Jun Hato ,  Ryuichiro Mizuno ,  Katsuhiko Kimura ,  Seiichi Kato

发明人： Yoshihiro Sato ,  Hidenao Saito ,  Jun Hato ,  Ryuichiro Mizuno ,  Katsuhiko Kimura ,  Seiichi Kato

IPC分类号： G11B7/00

CPC分类号： G11B7/0933 ,  G11B7/0932 ,  G11B7/0935

摘要： In an optical pickup equipped with a semiconductor laser, electro-optical components such as a lens, and an objective lens drive device, the objective lens drive device includes objective lenses, a holder holding the objective lenses, a focusing coil, and tracking coils. The focusing coil is wound in parallel to the optical surface of the objective lens, and formed in a parallelogram shape having inclined portions provided near the tracking coils. The two tracking coils are placed on diagonal portions of the lens holder.

摘要翻译： 在配备有半导体激光器的光学拾取器，诸如透镜的电光部件和物镜驱动装置中，物镜驱动装置包括物镜，保持物镜的保持器，聚焦线圈和跟踪线圈。 聚焦线圈与物镜的光学表面平行地缠绕，并且形成为具有设置在跟踪线圈附近的倾斜部分的平行四边形。 两个跟踪线圈被放置在透镜架的对角部分上。

公开(公告)号：US08407730B2

公开(公告)日：2013-03-26

申请号：US12632891

申请日：2009-12-08

申请人： Yoshihiro Sato ,  Hidenao Saito ,  Seiichi Kato ,  Jun Hato ,  Ryuichiro Mizuno ,  Katsuhiko Kimura

发明人： Yoshihiro Sato ,  Hidenao Saito ,  Seiichi Kato ,  Jun Hato ,  Ryuichiro Mizuno ,  Katsuhiko Kimura

IPC分类号： G11B7/00

CPC分类号： G11B7/0932 ,  G11B7/0933 ,  G11B7/22

摘要： An objective lens actuator 25, for driving an objective lens 1 for focusing lights upon a recoding surface of an optical disc, comprises a moving part 2, which comprises the objective lens 1 and a coil; a magnet, which is fixed on a yoke and drives the moving part 2; a plural number of elastic support parts, each of which supports the moving part 2 at an end thereof; a first fixing portion 5a and a second fixing portion 5b, which fix other ends of the plural number of elastic support parts 4 and are disposed opposite to each other in a focus direction; and a moving mechanism 6, which is provided on the first and second fixing portion 5a and 5b, so that the first and second fixing portions 5a and 5b can move in the focus direction, relatively, and thereby providing the objective lens actuator 25 enabling to reduce the dynamic relative tilt between the optical disc and the objective lens 1 (i.e., reducing the tilt of the objective lens 1 in the tangential direction when operating), as well as, an optical pickup and an optical disc drive.

摘要翻译： 用于驱动用于将光聚焦在光盘的记录表面上的物镜1的物镜致动器25包括包括物镜1和线圈的移动部分2; 磁体，其固定在磁轭上并驱动移动部件2; 多个弹性支撑部件，每个弹性支撑部件在其一端支撑移动部件2; 第一固定部分5a和第二固定部分5b，其固定多个弹性支撑部分4的另一端，并且在聚焦方向上彼此相对设置; 以及设置在第一和第二固定部分5a和5b上的移动机构6，使得第一和第二固定部分5a和5b可相对于聚焦方向移动，从而使物镜致动器25能够 降低光盘和物镜1之间的动态相对倾斜度（即，当操作时减小物镜1在切线方向上的倾斜度）以及光拾取器和光盘驱动器。

公开(公告)号：US06195314B1

公开(公告)日：2001-02-27

申请号：US08968753

申请日：1997-08-19

申请人： Shinro Inui ,  Naohiko Otoshi ,  Katsuhiko Izumi ,  Michio Miura ,  Naomitsu Kuroda ,  Ryuichiro Mizuno

发明人： Shinro Inui ,  Naohiko Otoshi ,  Katsuhiko Izumi ,  Michio Miura ,  Naomitsu Kuroda ,  Ryuichiro Mizuno

IPC分类号： G11B700

CPC分类号： G11B7/1374 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

摘要： It is an object to perform a thin and compact design of the objective lens driving device. In order to achieve the above object, optical beam is passed through a space surrounded by a tracking coil and a focusing coil which are adjacent to each other and fixed in a holder. Further, it is another object to position the objective lens with high precision in an objective lens driving device for switching a plurality of objective lenses in accordance with the type of an optical disc. In order to achieve this object, magnetic substances which are radially extended with the sliding shaft at the center are provided in the lens holder, and the magnetic substances are located within a plane perpendicular to the plane constituting the magnetic gap and at the outside of the magnetic gap. Still further, in an objective lens driving device it is another object to prevent the occurrence of positional displacement of the objective lens due to resistance force of current supply means such as FPC. To achieve this object, a first objective lens and a second objective lens are arranged so that the objective lens arrangement angle at which the first and second objective lenses are arranged with respect to the shaft center of the sliding shaft is displaced, by a predetermined amount, from the magnetic circuit arrangement angle at which the magnetic substances and the magnets are arranged with respect to the shaft center of the sliding shaft.

摘要翻译： 本发明的目的是实现物镜驱动装置的薄型紧凑设计。 为了实现上述目的，光束通过彼此相邻并固定在保持器中的由跟踪线圈和聚焦线圈包围的空间。 此外，另一目的是将物镜高精度地定位在用于根据光盘的类型切换多个物镜的物镜驱动装置中。 为了实现这个目的，在透镜保持器中设置有以中心的滑动轴径向延伸的磁性物质，并且磁性物质位于垂直于构成磁隙的平面的平面内，并且在 磁隙。 此外，在物镜驱动装置中，另一个目的是防止由于诸如FPC的电流供给装置的阻力而导致的物镜的位置偏移。 为了实现该目的，第一物镜和第二物镜被布置成使得第一和第二物镜相对于滑动轴的轴中心布置的物镜布置角度被移动预定量 从磁性物质和磁体相对于滑动轴的轴心配置的磁路配置角度。