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11. 发明申请

US20060156324A1 Objective lens driving drive 失效
标题翻译：物镜驱动驱动
公开(公告)号：US20060156324A1
公开(公告)日：2006-07-13
申请号：US10532141
申请日：2003-10-23
申请人： Koji Ieki , Hiroshi Yamamoto , Yoshihiro Ikawa
发明人： Koji Ieki , Hiroshi Yamamoto , Yoshihiro Ikawa
IPC分类号： G11B7/09 , G11B7/085 , G11B7/08
CPC分类号： G11B7/0932 , G11B7/0956
摘要： In order to obtain a preferred recording/reproducing characteristic in an apparatus for optical disks having higher density, an objective lens drive is provided for driving an objective lens (1) in the optical axis direction, a direction perpendicular to the optical axis, and a tilting direction along the radius of an optical disk, by which operating sensitivity is improved and a stable operating characteristic is realized. Sections of two (7b, 7e) of six fixing portions (7a to 7f) for supporting six support members (6a to 6f) which support a movable part (5), are set lower in stiffness than another sections of the other four fixing portions (7a, 7c, 7d, 7f), thereby improving the operating sensitivity of the movable part (5) and stabilizing the operation of the movable part (5).
摘要翻译：为了在具有较高密度的光盘的装置中获得优选的记录/再现特性，提供了一种用于在光轴方向，垂直于光轴的方向驱动物镜（1）的物镜驱动器，以及沿着光盘的半径倾斜方向，从而提高操作灵敏度并实现稳定的工作特性。用于支撑支撑可移动部分（5）的六个支撑构件（6a至6f）的六个固定部分（7a至7f）的两个（7b，7e）的部分的刚度比另一部分（7a，7c，7d，7f），从而提高可动部（5）的操作灵敏度，稳定可动部（5）的动作。

12. 发明授权

US06661415B1 Liquid crystal driver and optical head for tilt correction 失效
标题翻译：液晶驱动器和光学头用于倾斜校正
公开(公告)号：US06661415B1
公开(公告)日：2003-12-09
申请号：US09598972
申请日：2000-06-22
申请人： Katsuhiko Yasuda , Hidenori Wada , Daisuke Ogata , Kanji Wakabayashi , Naoya Hotta , Yoshihiro Ikawa , Yoshihiro Kanda , Masahiro Inata
发明人： Katsuhiko Yasuda , Hidenori Wada , Daisuke Ogata , Kanji Wakabayashi , Naoya Hotta , Yoshihiro Ikawa , Yoshihiro Kanda , Masahiro Inata
IPC分类号： G09G500
CPC分类号： G11B7/0956 , G09G3/3696 , G09G2320/0247
摘要： Tilt which is inclination of a normal of optical disk relative to optical axis of optical head is corrected with a liquid crystal element. In a driver for the liquid crystal element, a periodic waveform generator generates periodic waveform and an inverting element inverts the periodic waveform. The periodic waveform and the inverted waveform are connected to two ends of a potential divider which provides partial voltages. The periodic waveform is connected to a common electrode of the liquid crystal element, and the partial voltages of the potential divider are connected to electrodes opposing the common electrode. A structure of a driver circuit for each direction is simple. Tilt in a plurality of directions can be performed independently of each other. Spherical aberration is also corrected. When the liquid crystal element is mounted to a fixed component, deterioration due to jitters is reduced.
摘要翻译：用液晶元件校正光盘相对于光头的光轴的倾斜度的倾斜。在液晶元件的驱动器中，周期性波形发生器产生周期性波形，并且反相元件反转周期性波形。周期波形和反相波形连接到提供部分电压的分压器的两端。周期波形连接到液晶元件的公共电极，分压器的分压连接到与公共电极相对的电极。每个方向的驱动电路结构简单。可以彼此独立地执行多个方向的倾斜。也校正了球面像差。当液晶元件安装到固定部件时，由于抖动引起的劣化降低。

13. 发明授权

US07193937B2 Objective lens driving device and optical disk apparatus 失效
标题翻译：物镜驱动装置和光盘装置
公开(公告)号：US07193937B2
公开(公告)日：2007-03-20
申请号：US10616266
申请日：2003-07-09
申请人： Yoshihiro Ikawa , Hiroshi Yamamoto , Koji Ieki
发明人： Yoshihiro Ikawa , Hiroshi Yamamoto , Koji Ieki
IPC分类号： G11B7/00
CPC分类号： G11B7/0956 , G11B7/0933 , G11B7/0935
摘要： Tracking coils are attached to outer surfaces of two focusing coils. Inside the focusing coils, a first magnet and a second magnet are arranged respectively. A third magnet is arranged so as to face the first magnet and the second magnet via the tracking coils. An open end of a first yoke for holding the first magnet and an open end of a second yoke for holding the second magnet are connected by a bridging yoke. Since a magnetic flux is formed in the bridging yoke, pitching vibrations can be suppressed and a driving sensitivity improves owing to an increase in an effective magnetic flux.
摘要翻译：跟踪线圈连接到两个聚焦线圈的外表面。在聚焦线圈内部，分别设置有第一磁体和第二磁体。第三磁体被布置成经由跟踪线圈面对第一磁体和第二磁体。用于保持第一磁体的第一磁轭的开口端和用于保持第二磁体的第二磁轭的开口端通过桥接磁轭连接。由于在桥接磁轭中形成磁通量，所以可以抑制俯仰振动，并且由于有效磁通的增加而提高驱动灵敏度。

14. 发明授权

US5995479A Optical head adjusting apparatus 失效
标题翻译：光头调节装置
公开(公告)号：US5995479A
公开(公告)日：1999-11-30
申请号：US941984
申请日：1997-10-01
申请人： Teruyuki Takizawa , Yoshihiro Ikawa , Kenji Akimaru , Koji Miyata
发明人： Teruyuki Takizawa , Yoshihiro Ikawa , Kenji Akimaru , Koji Miyata
IPC分类号： G11B21/02 , G11B7/085 , G11B7/095 , G11B17/30
CPC分类号： G11B7/08582 , G11B7/0956
摘要： The swing centers of guide shafts in inclination adjustment of an optical head are set to be on a plane which is perpendicular to a predetermined radial direction of an optical disk and has thereon the rotation axis of a disk motor. When the inclination adjustment of the optical head is conducted, relative gap variation between the optical head and the optical disk does not occur, and the inclination adjustment is realized within a movable range of an objective lens. The inclination angle of the optical head in a radial direction of the optical disk is adjusted by simultaneously moving upward or downward ends of two guide shafts, and the inclination angle of the optical head in a tangential direction of the optical disk can be adjusted by moving upward and downward one end of at least one of the guide shafts.
摘要翻译：光头的倾斜调整中的导向轴的摆动中心设置在与光盘的规定的径向正交的平面上，并且具有盘式电动机的旋转轴。当进行光头的倾斜调节时，不会发生光头与光盘之间的相对间隙变化，并且在物镜的可移动范围内实现倾斜调节。通过同时移动两个导向轴的上下端来调整光学头在光盘的径向上的倾斜角度，并且可以通过移动来调节光学头在光盘切向方向上的倾斜角度至少一个导向轴的上下一端。

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