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公开(公告)号：US6134058A
公开(公告)日：2000-10-17
申请号：US342585
申请日：1999-06-29
申请人： Masanari Mohri , Hitoshi Fujii , Kanji Wakabayashi , Hiroshi Yamamoto , Teruyuki Takizawa , Takeo Santo
发明人： Masanari Mohri , Hitoshi Fujii , Kanji Wakabayashi , Hiroshi Yamamoto , Teruyuki Takizawa , Takeo Santo
IPC分类号： G11B7/09 , G11B7/095 , H02K41/035 , G02B7/02 , G11B7/00
CPC分类号： G11B7/0956 , G11B7/0932 , G11B7/0933 , G11B7/0935 , H02K41/0354 , H02K2201/18
摘要： An object lens driving device of the present invention includes a movable section, supporting sections for supporting the movable section and a base for holding the supporting sections. The movable section includes an object lens for recording and/or reproducing optical information to and/or from a disk-shaped recording medium, a lens holder for holding the object lens and at least four permanent magnets adhered to the lens holder. The supporting sections include at least four metal wires substantially parallel to each other, each wire having a first end fixed to the lens holder and a second end connected to the base, and elastic deformable elements connected to the base and having connecting sections thereof connected to the second end of each respective metal wire. The base includes yokes fixed to the base and facing the respective permanent magnets, focusing coils wound around the respective yokes, wound axes of the focusing coils being oriented in a direction of an optical axis of the object lens, and tracking coils wound around the respective yokes, wound axes of the tracking coils being oriented in a direction perpendicular to the wound axes of the focusing coils.
摘要翻译： 本发明的物镜驱动装置包括可动部，用于支撑可动部的支撑部和用于保持支撑部的基部。 可移动部分包括用于记录和/或再现光盘信息到和/或来自盘形记录介质的物镜，用于保持物镜的透镜保持器和粘附到透镜保持器的至少四个永磁体。 所述支撑部分包括至少四条彼此平行的金属线，每条线具有固定到所述透镜保持器的第一端和连接到所述基座的第二端，以及连接到所述基座的弹性变形元件，并且其连接部分连接到 每个相应金属线的第二端。 底座包括固定在基座上并面向各个永久磁铁的轭，围绕各轭轭的聚焦线圈，聚焦线圈的缠绕轴线沿着物镜的光轴方向定向，并且缠绕在相应的磁轭上的跟踪线圈 磁轭，跟踪线圈的绕线轴线在垂直于聚焦线圈的绕线轴线的方向上定向。
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公开(公告)号：US06587284B2
公开(公告)日：2003-07-01
申请号：US09967078
申请日：2001-09-28
IPC分类号： G02B702
CPC分类号： G11B7/0956 , G11B7/0933 , G11B7/0935
摘要： An objective lens driving apparatus is improved in a tracking drive sensitivity, and is capable of suppressing the occurrence of a tilt when a moving member is driven for tracking and focusing motions. To achieve this, the objective lens driving apparatus comprises: a substantially rectangularly shaped focusing coil and a substantially rectangularly shaped tracking coil, both arranged in the same plane, and fixed to a lens holder to drive the lens holder on which an objective lens is held; and a magnet having mutually opposite magnetic poles arranged at positions opposite winding portions of the focusing coil which lie on two sides thereof extending perpendicularly to a focusing direction, and also having mutually opposite magnetic poles arranged at positions opposite winding portions of the tracking coil which lie on two sides thereof extending perpendicularly to a tracking direction.
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公开(公告)号：US06344936B1
公开(公告)日：2002-02-05
申请号：US09672847
申请日：2000-09-28
IPC分类号： G02B702
CPC分类号： G11B7/0956 , G11B7/0933 , G11B7/0935
摘要： An objective lens driving apparatus is improved in a tracking drive sensitivity, and is capable of suppressing the occurrence of a tilt when a moving member is driven for tracking and focusing motions. To achieve this, the objective lens driving apparatus comprises: a substantially rectangularly shaped focusing coil and a substantially rectangularly shaped tracking coil, both arranged in the same plane, and fixed to a lens holder to drive the lens holder on which an objective lens is held; and a magnet having mutually opposite magnetic poles arranged at positions opposite winding portions of the focusing coil which lie on two sides thereof extending perpendicularly to a focusing direction, and also having mutually opposite magnetic poles arranged at positions opposite winding portions of the tracking coil which lie on two sides thereof extending perpendicularly to a tracking direction.
摘要翻译： 物镜驱动装置的跟踪驱动灵敏度得到改善，并且当驱动移动部件进行跟踪和聚焦运动时能够抑制倾斜的发生。 为了实现这一点，物镜驱动装置包括：基本上矩形的聚焦线圈和基本上矩形的跟踪线圈，均布置在同一平面中，并且固定到透镜保持器以驱动保持物镜的透镜保持器 ; 以及具有相互相对的磁极的磁体，其布置在聚焦线圈的相对的卷绕部分的相对于聚焦方向垂直延伸的两侧上的位置处，并且还具有相互相对的磁极，该磁极布置在跟踪线圈的绕组部分相对的位置， 在其两侧垂直于跟踪方向延伸。
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4.发明授权公开(公告)号：US06747921B2
公开(公告)日：2004-06-08
申请号：US10390129
申请日：2003-03-17
申请人： Kanji Wakabayashi , Hitoshi Fujii , Hiroshi Yamamoto , Masanari Mohri , Takayuki Kojima , Daisaburo Kubota , Kenichiro Urairi
发明人： Kanji Wakabayashi , Hitoshi Fujii , Hiroshi Yamamoto , Masanari Mohri , Takayuki Kojima , Daisaburo Kubota , Kenichiro Urairi
IPC分类号： G11B7095
CPC分类号： G11B7/0932 , G11B7/0933 , G11B7/0935
摘要： An apparatus for driving an objective lens of the present invention includes: a base which is moved along an optical disk; an objective lens disposed so as to be opposed to the optical disk and having an optical axis in a vertical direction with respect to the optical disk, for optically recording information onto the optical disk or optically reproducing information from the optical disk; a holder portion for holding the objective lens; a plurality of elastic arms extending between the base and the holder portion in a tangent direction of the optical disk, for supporting the holder portion movably with respect to the base; and a driving portion for generating an electromagnetic force for moving the holder portion with respect to the base, wherein the elastic arms are disposed away from each other in a vertical direction, the base includes each movable portion for supporting one end of each of the elastic arms, and each of the movable portions is supported at each position in a vertical direction outside of one end of each of the elastic arms, so as to be elastically pivotable around each axis in a radius direction of the optical disk.
摘要翻译： 本发明的用于驱动物镜的装置包括：沿着光盘移动的基座; 物镜，其设置成与光盘相对并且在相对于光盘的垂直方向上具有光轴，用于将信息光学地记录到光盘上或从光盘再现信息; 用于保持物镜的保持器部分; 多个弹性臂，在所述基座和所述保持部之间沿所述光盘的切线方向延伸，用于相对于所述基座可移动地支撑所述保持部; 以及用于产生用于相对于基座移动保持器部分的电磁力的驱动部分，其中弹性臂在垂直方向上彼此远离地设置，所述基座包括用于支撑每个弹性体的一端的每个可移动部分 臂，并且每个可动部分在每个弹性臂的一端的垂直方向的每个位置处被支撑，以便能够围绕每个轴在光盘的半径方向上弹性地枢转。
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5.发明授权公开(公告)号：US07272101B2
公开(公告)日：2007-09-18
申请号：US10663596
申请日：2003-09-16
申请人： Masanari Mohri , Yoshiaki Komma , Hiroshi Yamamoto
发明人： Masanari Mohri , Yoshiaki Komma , Hiroshi Yamamoto
CPC分类号： G11B7/1353 , G02B13/06 , G11B7/1374 , G11B2007/0006
摘要： A light beam emitted from a light source is focused by an objective lens onto an information recording surface of an optical information recording medium. The objective lens has a substantially truncated-cone-shaped portion on its surface on the side of the optical information recording medium. This makes it possible to prevent interference with a DVD-RAM cartridge and ensure optical compatibility with a BD and a DVD.
摘要翻译： 从光源发射的光束被物镜聚焦到光学信息记录介质的信息记录表面上。 物镜在光信息记录介质一侧的表面上具有大致截头圆锥形的部分。 这使得可以防止对DVD-RAM盒的干扰，并确保与BD和DVD的光学兼容性。
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公开(公告)号：US06657944B2
公开(公告)日：2003-12-02
申请号：US09790830
申请日：2001-02-22
申请人： Masanari Mohri , Hiroshi Yamamoto
发明人： Masanari Mohri , Hiroshi Yamamoto
IPC分类号： G11B709
CPC分类号： G11B7/22 , G11B7/0932 , G11B7/0935 , G11B7/121 , G11B21/16
摘要： In an objective lens driving device having a movable portion including an objective lens held by a lens holder, a damage prevention system for preventing the objective lens or a disk from being damaged when the objective lens or the lens holder collides with the disk is provided. The damage prevention system is constituted by inserting a protecting member formed of an elastic member in a fitting portion on an upper surface of the lens holder while being deformed. In this manner, it is possible to generate a sufficient holding power with respect to the protecting member without using glue or the like.
摘要翻译： 在具有包括由透镜架保持的物镜的可移动部分的物镜驱动装置中，设置有用于防止在物镜或镜架与盘碰撞时物镜或盘损坏的防损系统。 损伤防止系统通过将由弹性构件形成的保护构件插入透镜架的上表面的配合部分而变形而构成。 以这种方式，可以在不使用胶水等的情况下相对于保护构件产生足够的保持力。
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公开(公告)号：US06791772B2
公开(公告)日：2004-09-14
申请号：US10397810
申请日：2003-03-25
IPC分类号： G02B702
CPC分类号： G11B7/0935 , G11B7/093 , G11B7/0933
摘要： An objective lens driver includes a movable body, a base, a supporting portion, a first multipolar magnet and a second multipolar magnet. The movable body includes an objective lens, a lens holder, and a coil substrate. The coil substrate includes a focusing coil and a tracking coil. The supporting portion allows the movable body to move in a focusing direction and a tracking direction with respect to the base. The focusing direction is parallel to the optical axis of the objective lens, while the tracking direction is perpendicular to the focusing direction. The first and second multipolar magnets sandwich the coil substrate between them. The focusing and tracking coils are arranged as two flat coils on two mutually parallel separate planes so as to overlap with each other at least partially in a direction that is perpendicular to the focusing and tracking directions.
摘要翻译： 物镜驱动器包括可移动体，基座，支撑部分，第一多极磁体和第二多极磁体。 可移动体包括物镜，透镜保持器和线圈基板。 线圈基板包括聚焦线圈和跟踪线圈。 支撑部分允许可移动体相对于基座在聚焦方向和跟踪方向上移动。 聚焦方向平行于物镜的光轴，而跟踪方向垂直于聚焦方向。 第一和第二多极磁体将线圈基板夹在它们之间。 聚焦和跟踪线圈在两个相互平行的分开的平面上被布置为两个扁平线圈，以便至少部分地在垂直于聚焦和跟踪方向的方向上彼此重叠。
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8.发明授权Position sensor, optical head device, head moving mechanism, information recording and reproduction device and position control system 有权位置传感器，光头装置，头移动机构，信息记录和再现装置和位置控制系统公开(公告)号：US08299782B2
公开(公告)日：2012-10-30
申请号：US11918613
申请日：2006-04-18
申请人： Osamu Mizuno , Hiroshi Yamamoto , Takuya Wada , Hideki Aikoh , Kanji Wakabayashi , Takatoshi Yukimasa
发明人： Osamu Mizuno , Hiroshi Yamamoto , Takuya Wada , Hideki Aikoh , Kanji Wakabayashi , Takatoshi Yukimasa
IPC分类号： G01B7/14
CPC分类号： G01D5/145 , G11B7/08505 , G11B7/1378 , G11B7/13925 , G11B2007/0013
摘要： As imaging devices are miniaturized, and optical devices are miniaturized, lens moving mechanisms are also miniaturized. Thus, position sensors for them are required to be miniaturized and have high accuracy at low cost. A magnet of a pillar shape and a yoke which move in the X axis direction with respect to a magnetic field detection element are provided, and a shape of a cross section of the yoke which is orthogonal to a longitudinal direction of the magnet changes along the longitudinal direction.
摘要翻译： 随着成像装置小型化，光学装置小型化，透镜移动机构也小型化。 因此，它们的位置传感器需要小型化并且以低成本具有高精度。 提供了相对于磁场检测元件沿X轴方向移动的柱状磁轭和磁轭，并且与磁体的长度方向正交的轭的截面形状沿着 纵向。
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公开(公告)号：US5905255A
公开(公告)日：1999-05-18
申请号：US7145
申请日：1998-01-14
CPC分类号： G11B7/0956 , G11B7/0933 , G11B7/0935 , G11B7/093 , G11B7/0932
摘要： In a objective lens driver, at least one permanent magnet is mounted on a movable member, and plural yokes, each being wound with a coil having its winding axis in the focusing direction, are disposed facing the permanent magnet. The yokes are arranged almost symmetrically about a plane including the center of gravity of the movable member and being perpendicular to the tracking direction. In this structure, even when the movable member moves in the tracking direction, since the permanent magnet (a magnetic field source) also moves with the movable member, the distribution of magnetic flux density that contributes to the drive also shifts according to the movement of the movable member, so that the distribution of magnetic flux density maintains being almost symmetrical about the center of gravity of the movable member. Accordingly, in tilt drive, a constant sensitivity to tilt drive is obtained regardless of the position of the movable member. Further, since the rotation axis of tilt drive is fixed, there arises no crosstalk of displacement in the focusing direction and the tracking direction. Furthermore, since the point of action of driving force on the movable member is fixed, there arises no crosstalk of angular displacement in the tilt direction due to focusing drive and tracking drive. Consequently, stable focusing control, tracking control and tilt correction control are realized in an objective lens driver capable of correcting a tilt.
摘要翻译： 在物镜驱动器中，至少一个永久磁铁被安装在可动件上，并且每个缠绕有沿聚焦方向的卷绕轴的线圈的多个轭设置成面向永磁体。 轭围绕包括可动构件的重心且垂直于跟踪方向的平面几乎对称地布置。 在该结构中，即使可动部件沿跟踪方向移动，由于永磁体（磁场源）也随着可动部件移动，所以有助于驱动的磁通密度的分布也根据 可动构件，使得磁通密度的分布保持关于可移动构件的重心几乎对称。 因此，在倾斜驱动中，无论移动部件的位置如何，都能够获得对倾斜驱动的恒定灵敏度。 此外，由于倾斜驱动的旋转轴是固定的，所以在聚焦方向和跟踪方向上不产生位移的串扰。 此外，由于可动构件上的驱动力的作用点是固定的，所以由于聚焦驱动和跟踪驱动，不会产生倾斜方向上的角位移的串扰。 因此，可以在能够校正倾斜的物镜驱动器中实现稳定的聚焦控制，跟踪控制和倾斜校正控制。
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10.发明申请Position sensor, optical head device, head moving mechanism, information recordng/reproducing device and position control system 有权位置传感器，光头装置，头移动机构，信息记录/再现装置和位置控制系统公开(公告)号：US20090072818A1
公开(公告)日：2009-03-19
申请号：US11918613
申请日：2006-04-18
申请人： Osamu Mizuno , Hiroshi Yamamoto , Takuya Wada , Hideki Aikoh , Kanji Wakabayashi , Takatoshi Yukimasa
发明人： Osamu Mizuno , Hiroshi Yamamoto , Takuya Wada , Hideki Aikoh , Kanji Wakabayashi , Takatoshi Yukimasa
IPC分类号： G01B7/14
CPC分类号： G01D5/145 , G11B7/08505 , G11B7/1378 , G11B7/13925 , G11B2007/0013
摘要： As imaging devices are miniaturized, and optical devices are miniaturized, lens moving mechanisms are also miniaturized. Thus, position sensors for them are required to be miniaturized and have high accuracy at low cost. A magnet 2 of a pillar shape and a yoke 3 which move in X axis direction with respect to a magnetic field detection element 1 are provided, and a shape of a cross section of the yoke 3 which is orthogonal to a longitudinal direction of the magnet 2 changes along the longitudinal direction.
摘要翻译： 随着成像装置小型化，光学装置小型化，透镜移动机构也小型化。 因此，它们的位置传感器需要小型化并且以低成本具有高精度。 设置有相对于磁场检测元件1在X轴方向上移动的柱状的磁体2和磁轭3，并且与磁体的长度方向正交的磁轭3的截面形状 2沿纵向变化。
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