公开(公告)号：US08589966B2

公开(公告)日：2013-11-19

申请号：US13430831

申请日：2012-03-27

申请人： Katsuhiko Kimura ,  Jun Hato ,  Zhiyan Gao

发明人： Katsuhiko Kimura ,  Jun Hato ,  Zhiyan Gao

IPC分类号： G11B7/09

CPC分类号： G11B7/0935 ,  G11B7/0956

摘要： An optical pickup whose thickness is small and power consumption is low is provided, in which these advantages are achieved by increasing the driving force generated in the tilt coil in an objective lens driving apparatus and by making the thickness of the objective lens driving apparatus to be small.In an optical pickup including: an objective lens for condensing light onto an optical disc; a lens holder to which the objective lens has been attached; a focusing coli, a tracking coil, and a tilt coil, which have been attached to the lens holder; and a reflection mirror for reflecting light toward the optical axis of the objective lens, the tilt coil is made to have a shape in which the tilt coil is not brought into contact with the side of the reflection mirror, the side being near to the objective lens.

摘要翻译： 提供了一种厚度小且功耗低的光学拾取器，其中通过增加在物镜驱动装置中的倾斜线圈中产生的驱动力并且通过使物镜驱动装置的厚度为 小。 一种光学拾取器，包括：将光聚光到光盘上的物镜; 已经安装了物镜的透镜架; 聚焦大肠杆菌，跟踪线圈和倾斜线圈，其已经附接到透镜保持器; 以及反射镜，用于朝向物镜的光轴反射光，使倾斜线圈具有其中倾斜线圈不与反射镜侧接触的形状，该侧靠近物镜 镜片。

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：US07684290B2

公开(公告)日：2010-03-23

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：US20070079317A1

公开(公告)日：2007-04-05

申请号：US11526649

申请日：2006-09-26

申请人： Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

发明人： Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

IPC分类号： G11B7/00

CPC分类号： G11B7/0935 ,  G11B7/0933

摘要： This invention aims at reducing a rolling moment generated in coils mounted to lens holder side face without losing drive forces in a focusing direction and tracking direction in an objective lens drive means of an optical pickup device. By shifting a coil line portion near the objective lens of two coil line portions substantially parallel to the tracking direction of the first coil in a direction departing from a lens optical axis, increase and decrease in drive forces generated in right and left first coils when the lens holder is moved in the tracking direction cancel each other so as to eliminate imbalance between the right and left drive forces.

摘要翻译： 本发明的目的在于减少安装在透镜架侧面的线圈中产生的滚动力矩，而不会损失光拾取装置的物镜驱动装置中的聚焦方向和跟踪方向的驱动力。 通过沿着离开透镜光轴的方向基本上平行于第一线圈的跟踪方向的两个线圈线部分的物镜附近的线圈线部分移动，当左右第一线圈产生的驱动力的增加和减小 镜片保持器在跟踪方向上移动彼此抵消，以消除左右驱动力之间的不平衡。

公开(公告)号：US09070380B2

公开(公告)日：2015-06-30

申请号：US13015740

申请日：2011-01-28

申请人： Yoshihiro Sato ,  Jun Hato ,  Katsuhiko Kimura ,  Seiichi Kato ,  Takahiro Yamaguchi

发明人： Yoshihiro Sato ,  Jun Hato ,  Katsuhiko Kimura ,  Seiichi Kato ,  Takahiro Yamaguchi

IPC分类号： G11B7/095 ,  G11B7/09

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

摘要： High-performance and reliable objective lens driving apparatus and optical pickup wherein the tilt of an objective lens relative to an optical disc is suppressed are provided. The optical pickup is equipped with a semiconductor laser, an electro-optic component, and the objective lens driving apparatus. In this optical pickup, the objective lens driving apparatus is comprised of: a moving part including an objective lens, a holder that holds the objective lens, a focusing coil, and a tracking coil; a holding member for elastic support members that couples together multiple elastic support members providing elastic support on a fixed part and the moving part and is mounted on the moving part; the elastic support members that elastically support the moving part from the fixed part; and the fixed part. The holding member for elastic support members mounted on the moving part and the holder that holds the objective lens are joined together by fitting together a concavity and a convexity.

摘要翻译： 提供了高性能且可靠的物镜驱动装置和光学拾取器，其中抑制了物镜相对于光盘的倾斜。 光学拾取器配备有半导体激光器，电光部件和物镜驱动装置。 在该光学拾取器中，物镜驱动装置包括：包括物镜的移动部件，保持物镜的保持器，聚焦线圈和跟踪线圈; 用于弹性支撑构件的保持构件，其将固定部件和所述移动部件上提供弹性支撑的多个弹性支撑构件联接在一起并安装在所述移动部件上; 所述弹性支撑构件从所述固定部弹性地支撑所述移动部件; 和固定部分。 安装在移动部件上的弹性支撑部件的保持部件和保持物镜的保持器通过将凹凸嵌合而接合在一起。

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：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：US20080037377A1

公开(公告)日：2008-02-14

申请号：US11699024

申请日：2007-01-29

申请人： Katsuhiko Kimura ,  Jun Hato

发明人： Katsuhiko Kimura ,  Jun Hato

IPC分类号： G11B11/00

CPC分类号： G11B7/0935

摘要： [Problem] An optical pickup that can incline an objective lens in the same direction as that of a bend of an optical disc is provided.[Means of solving the Problem] The optical pickup includes a lens holder that holds an objective lens, focusing coils attached to the lens holder, a yoke to which magnets are attached, and inner yokes disposed opposite to the magnets via the focusing coils, and the optical pickup is structured so that a cross-sectional area of the inner yoke disposed toward the outer periphery of the optical disc is greater than a cross-sectional area of the inner yoke disposed on the inner periphery of the optical disc.

摘要翻译： [问题]提供一种能够使物镜沿与光盘的弯曲部相同的方向倾斜的光学拾取器。 解决问题的手段光学拾取器包括：保持物镜的透镜保持器，安装在透镜保持器上的聚焦线圈，安装有磁铁的磁轭和经由聚焦线圈与磁体相对设置的内轭铁;以及 光学拾取器被构造成使得朝向光盘的外周设置的内轭铁的横截面面积大于设置在光盘内周上的内轭铁的横截面面积。

公开(公告)号：US08037488B2

公开(公告)日：2011-10-11

申请号：US11526649

申请日：2006-09-26

申请人： Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

发明人： Katsuhiko Kimura ,  Hidenao Saito ,  Jun Hato

IPC分类号： G11B7/24 ,  G11B23/03 ,  G11B3/00

CPC分类号： G11B7/0935 ,  G11B7/0933

摘要： This invention aims at reducing a rolling moment generated in coils mounted to lens holder side face without losing drive forces in a focusing direction and tracking direction in an objective lens drive of an optical pickup device. By shifting a coil line portion near the objective lens of two coil line portions substantially parallel to the tracking direction of the first coil in a direction departing from a lens optical axis, increase and decrease in drive forces generated in right and left first coils when the lens holder is moved in the tracking direction cancel each other so as to eliminate imbalance between the right and left drive forces.

摘要翻译： 本发明的目的在于减少安装在透镜架侧面的线圈中产生的滚动力矩，而不会在光学拾取装置的物镜驱动器中的聚焦方向和跟踪方向上丧失驱动力。 通过沿着离开透镜光轴的方向基本上平行于第一线圈的跟踪方向的两个线圈线部分的物镜附近的线圈线部分移动，当左右第一线圈产生的驱动力的增加和减小 镜片保持器在跟踪方向上移动彼此抵消，以消除左右驱动力之间的不平衡。