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1. 发明授权

US6128258A Tilt detection method and optical disk drive 失效
标题翻译：倾斜检测方法和光盘驱动器
公开(公告)号：US6128258A
公开(公告)日：2000-10-03
申请号：US123404
申请日：1998-07-28
申请人： Katsuhiko Kimura , Yoshiaki Yamauchi , Seiichi Kato , Naruo Watanabe
发明人： Katsuhiko Kimura , Yoshiaki Yamauchi , Seiichi Kato , Naruo Watanabe
IPC分类号： G11B7/095 , G11B7/125 , G11B7/09
CPC分类号： G11B7/126 , G11B7/0956 , G11B7/127
摘要： In an optical disk drive using as a light source a semiconductor laser having a main electrode and a plurality of subsidiary electrodes, a wave front of a generated laser beam is modulated by controlling injection currents to the plurality of subsidiary electrodes, in accordance with a change in signal outputs when the wave front is modulated, a tilt is detected between a direction normal to the surface of an optical disk and an objective lens optical axis, and in accordance with the detected tilt, the injection currents to the semiconductor laser are determined to correct the tilt. Since the tilt is detected and corrected through electrical modulation, the system can be made compact without using new components for tilt detection, and high speed control up to a high frequency becomes possible because there is no limit of the control bandwidth to be caused by sub-resonances in a high frequency band, like a mechanical actuator.
摘要翻译：在使用具有主电极和多个辅助电极的半导体激光器作为光源的光盘驱动器中，通过根据变化控制对多个辅助电极的注入电流来调制所产生的激光束的波前在波前调制的信号输出中，在垂直于光盘表面的方向和物镜光轴之间检测到倾斜，并且根据检测到的倾斜，将确定到半导体激光器的注入电流被确定为纠正倾斜。由于通过电调制来检测和校正倾斜，所以可以使系统紧凑而不使用用于倾斜检测的新部件，并且由于没有由sub引起的控制带宽的限制，所以高达高频率的高速控制成为可能 - 在高频带中的谐振，如机械致动器。

2. 发明授权

US06871351B2 Disc driving apparatus 失效
标题翻译：盘驱动装置
公开(公告)号：US06871351B2
公开(公告)日：2005-03-22
申请号：US09928346
申请日：2001-08-14
申请人： Yoshiaki Yamauchi , Katsuhiko Kimura , Mitsuo Satake , Manabu Ochi , Seiichi Kato
发明人： Yoshiaki Yamauchi , Katsuhiko Kimura , Mitsuo Satake , Manabu Ochi , Seiichi Kato
IPC分类号： G11B7/00 , G11B7/12 , G11B7/125 , G11B33/14 , G11B7/08
CPC分类号： G11B7/127 , G11B7/123 , G11B33/1406 , G11B2007/0006
摘要： In a disc driving apparatus, wherein a laser diode and a laser driver circuit board are mounted on a pickup housing in thermal contact therewith and are disposed adjacent to each other, a heat separation member is provided between the laser diode and the laser driver circuit board for effecting thermal separation therebetween, thereby reducing the thermal interference between the heat-generating elements that are adjacent to each other in the optical pickup. This makes it possible to protect the heat-generating elements from being deteriorated, leading to a reduction in the lifetime thereof, as well as, to improve the reliability thereof.
摘要翻译：在其中激光二极管和激光驱动器电路板安装在与其接触并与之热接触的拾取器壳体并且彼此相邻布置的盘驱动装置中，在激光二极管和激光驱动器电路板之间设置热分离构件为了实现其间的热分离，从而减小光拾取器中彼此相邻的发热元件之间的热干涉。这使得可以保护发热元件免于劣化，导致其寿命的降低以及提高其可靠性。

3. 发明申请

US20110185375A1 OBJECTIVE LENS DRIVING APPARATUS, OPTICAL PICKUP 有权
标题翻译：目标镜头驱动装置，光学拾取
公开(公告)号：US20110185375A1
公开(公告)日：2011-07-28
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： G11B7/08
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。

4. 发明授权

US06212140B1 Objective lens driving device and optical disk unit 失效
标题翻译：物镜驱动装置和光盘单元
公开(公告)号：US06212140B1
公开(公告)日：2001-04-03
申请号：US09391407
申请日：1999-09-08
申请人： Katsuhiko Kimura , Seiichi Kato , Hiroshi Saito , Hiroyasu Yoshida , Fumihito Ichikawa , Satoshi Shinada
发明人： Katsuhiko Kimura , Seiichi Kato , Hiroshi Saito , Hiroyasu Yoshida , Fumihito Ichikawa , Satoshi Shinada
IPC分类号： G11B700
CPC分类号： G11B7/093
摘要： In a background-art optical disk drive, it is necessary to improve acceleration generated in an objective lens driving device in order to make an objective lens track a disk rotating at a high speed. This can be achieved either by increasing a thrust force acting on a movable body including the objective lens or by making the movable body lighter in weight. One method for increasing the thrust force is to make permanent magnets larger or use permanent magnets having a large magnetic force. However, this leads to such a problem that the unit becomes larger in size or higher in cost. In order to solve the foregoing problem, an inner yoke is disposed around a beam of light and inside the movable body of the objective lens driving device. Alternatively, an inner yoke having at least two sides substantially parallel with the radial direction of the disk and at least two sides substantially perpendicular thereto is disposed inside the movable body.
摘要翻译：在背景技术的光盘驱动器中，需要改善在物镜驱动装置中产生的加速度，以便使物镜跟踪高速旋转的盘。这可以通过增加作用在包括物镜的可移动体上的推力或通过使移动体重量更轻而实现。增加推力的一种方法是使永磁体变大或使用具有大磁力的永久磁铁。然而，这导致这样的问题，即单元的尺寸变大或成本更高。为了解决上述问题，内磁轭围绕光束设置在物镜驱动装置的可移动体的内部。或者，具有与盘的径向大致平行的至少两个侧面的内轭和与其大体垂直的至少两个侧面设置在可动体的内部。

5. 发明授权

US09070380B2 Objective lens driving apparatus, optical pickup 有权
标题翻译：物镜驱动装置，光学拾取器
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。

6. 发明授权

US08341657B2 Lens driving mechanism for optical pickup and optical disc apparatus 失效
标题翻译：用于光学拾取器和光盘装置的透镜驱动机构
公开(公告)号：US08341657B2
公开(公告)日：2012-12-25
申请号：US12542078
申请日：2009-08-17
申请人： Tatsuya Yamasaki , Yoshihiro Sato , Seiichi Kato , Katsuhiko Kimura , Takahiro Yamaguchi , Yoshiro Konishi , Hidenao Saito
发明人： Tatsuya Yamasaki , Yoshihiro Sato , Seiichi Kato , Katsuhiko Kimura , Takahiro Yamaguchi , Yoshiro Konishi , Hidenao Saito
IPC分类号： G11B7/135
CPC分类号： G11B7/08582
摘要： An optical pickup, mounting a lens actuator 101 thereon, the lens actuator comprises: a lens 1 having an optical axis in direction in parallel with an optical disc; a holder 2, which holds the lens thereon; a first guide shaft 3 holding the holder, so as to regulate the holder to change a position thereof, into an inner surface direction of a surface having the optical axis of the lens as a normal line vector thereof; a second guide shaft 4, which regulates the holder to change the position thereof, into a normal line vector of an optical disc; and a reed screw, which moves the holder into direction of the optical axis of the lens, wherein a distance between the optical axis of the lens and the optical disc, a distance between a central axis of the first guide shaft and the optical disc, and a distance between a central axis of the second guide shaft and the optical disc are lager than a distance between a central axis of the reed screw and the optical disc.
摘要翻译：在其上安装透镜致动器101的光学拾取器，透镜致动器包括：具有与光盘平行的方向的光轴的透镜1; 在其上保持透镜的保持器2; 保持保持器的第一引导轴3，以将保持器的位置调整为具有透镜的光轴的表面的内表面方向作为其法线矢量; 第二引导轴4，其将保持器改变其位置，调节成光盘的法线矢量; 以及将保持器移动到透镜的光轴的方向的簧片螺钉，其中透镜的光轴与光盘之间的距离，第一引导轴的中心轴线与光盘之间的距离，并且第二引导轴的中心轴线与光盘之间的距离大于簧片螺钉的中心轴线与光盘之间的距离。

7. 发明授权

US08199613B2 Objective lens actuator and a thin-sized optical pickup with magnetic circuit having different lengthed magnets 有权
标题翻译：物镜致动器和具有磁路的薄型光学拾取器，具有不同的磁头
公开(公告)号：US08199613B2
公开(公告)日：2012-06-12
申请号：US12542070
申请日：2009-08-17
申请人： Seiichi Kato , Katsuhiko Kimura , Takahiro Yamaguchi , Yoshiro Konishi
发明人： Seiichi Kato , Katsuhiko Kimura , Takahiro Yamaguchi , Yoshiro Konishi
IPC分类号： G11B7/09
CPC分类号： H02K41/0356 , G02B7/08 , G11B7/0933 , G11B7/0956
摘要： An objective lens actuator, being suitable for a thin-sized optical pickup and a thin-sized optical disc apparatus, comprises: an objective lens for focusing a light upon a recording surface of an optical disc; and a driving mechanism including a focusing coil, tracking coils, and a magnetic circuit, for operating the objective lens into a focusing direction of approaching/receding to/from the optical disc, and into a tracking direction of a radius of the optical disc, wherein the magnetic circuit has a first magnet and a second magnet putting the objective lens therebetween, and one of the magnets is short of length in the focusing direction and is long in length in the tracking direction, comparing to the other magnet, thereby bringing an unnecessary moment, which is applied upon a moving part including the objective lens therein, to be small, and suppressing inclination or tilt and vibration of the objective lens.
摘要翻译：适用于薄型光学拾取器和薄型光盘装置的物镜致动器包括：用于将光聚焦在光盘的记录表面上的物镜; 以及包括聚焦线圈，跟踪线圈和磁路的驱动机构，用于将物镜操作到接近/退出到光盘的聚焦方向，并且进入光盘的半径的跟踪方向，其特征在于，所述磁路具有第一磁体和将所述物镜放置在其间的第二磁体，并且与所述另一磁体相比，所述磁体中的一个在聚焦方向上的长度短，并且在跟踪方向长度较长，在包括物镜的移动部件上施加的不必要的力矩小，并且抑制物镜的倾斜或倾斜和振动。

8. 发明申请

US20110149713A1 OBJECTIVE LENS DRIVE DEVICE AND OPTICAL PICKUP 失效
标题翻译：目标镜头驱动装置和光学拾取
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。

9. 发明申请

US20100067354A1 OPTICAL PICKUP AND AN OPTICAL DISC APPARATUS MOUNTING THE SAME THEREON 失效
标题翻译：光学拾取器和安装相同光盘的光盘设备
公开(公告)号：US20100067354A1
公开(公告)日：2010-03-18
申请号：US12542078
申请日：2009-08-17
申请人： Tatsuya Yamasaki , Yoshihiro Sato , Seiichi Kato , Katsuhiko Kimura , Takahiro Yamaguchi , Yoshiro Konishi , Hidenao Saito
发明人： Tatsuya Yamasaki , Yoshihiro Sato , Seiichi Kato , Katsuhiko Kimura , Takahiro Yamaguchi , Yoshiro Konishi , Hidenao Saito
IPC分类号： G11B7/135
CPC分类号： G11B7/08582
摘要： An optical pickup, mounting a lens actuator 101 thereon, the lens actuator comprises: a lens 1 having an optical axis in direction in parallel with an optical disc; a holder 2, which holds the lens thereon; a first guide shaft 3 holding the holder, so as to regulate the holder to change a position thereof, into an inner surface direction of a surface having the optical axis of the lens as a normal line vector thereof; a second guide shaft 4, which regulates the holder to change the position thereof, into a normal line vector of an optical disc; and a reed screw, which moves the holder into direction of the optical axis of the lens, wherein a distance between the optical axis of the lens and the optical disc, a distance between a central axis of the first guide shaft and the optical disc, and a distance between a central axis of the second guide shaft and the optical disc are lager than a distance between a central axis of the reed screw and the optical disc.
摘要翻译：在其上安装透镜致动器101的光学拾取器，透镜致动器包括：具有与光盘平行的方向的光轴的透镜1; 在其上保持透镜的保持器2; 保持保持器的第一引导轴3，以将保持器的位置调整为具有透镜的光轴的表面的内表面方向作为其法线矢量; 第二引导轴4，其将保持器改变其位置，调节成光盘的法线矢量; 以及将保持器移动到透镜的光轴的方向的簧片螺钉，其中透镜的光轴与光盘之间的距离，第一引导轴的中心轴线与光盘之间的距离，并且第二引导轴的中心轴线与光盘之间的距离大于簧片螺钉的中心轴线与光盘之间的距离。

10. 发明申请

US20100149954A1 OBJECTIVE LENS ACTUATOR, OPTICAL PICKUP AND OPTICAL DISC DRIVE 失效
标题翻译：目标镜头执行器，光学拾取和光盘驱动器
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。

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