公开(公告)号：US5646934A

公开(公告)日：1997-07-08

申请号：US454509

申请日：1995-05-30

申请人： Osamu Mizuno ,  Tohru Nakamura ,  Hideki Aikoh ,  Hironori Tomita ,  Masanari Mohri

发明人： Osamu Mizuno ,  Tohru Nakamura ,  Hideki Aikoh ,  Hironori Tomita ,  Masanari Mohri

IPC分类号： G11B17/028 ,  G11B17/04 ,  G11B7/00

CPC分类号： G11B17/057 ,  G11B17/0282 ,  G11B17/0284 ,  G11B17/0565

摘要： In a clamp mechanism, an adapter, and an optical disc apparatus for compatibly playing back an MD and a CD having different centering hole diameters and reference heights, a first clamp mechanism has a taper cone section for both the MD and CD, while a second clamp mechanism has an MD turntable and a CD clamper which is driven in contact with the MD turntable while clamping the CD. The adapter is a disc which has a hole having the same inner diameter as that of the centering hole of the MD and a thickness of 0.8 mm, the adapter to be attached to the CD. A first optical disc apparatus has an MD spindle motor and a CD spindle motor, and an optical system including an objective lens is arranged on a Straight line that connects both the spindle motors. A second optical disc apparatus has a spindle motor having an MD turntable and a CD turntable at both its ends.

摘要翻译： 在用于兼容地重放MD和具有不同定心孔直径和参考高度的CD的适配器和适配器和光盘装置中，第一夹紧机构具有用于MD和CD两者的锥形锥形部分，而第二 夹紧机构具有MD转盘和CD夹持器，其在夹住CD时被驱动与MD转盘接触。 适配器是具有与MD的定心孔相同的内径的孔和0.8mm的厚度的盘，即要附接到CD的适配器。 第一光盘装置具有MD主轴电机和CD主轴电机，并且包括物镜的光学系统布置在连接两个主轴电动机的直线上。 第二光盘装置具有在其两端具有MD转盘和CD转台的主轴电动机。

公开(公告)号：US5586105A

公开(公告)日：1996-12-17

申请号：US149724

申请日：1993-11-10

申请人： Osamu Mizuno ,  Tohru Nakamura ,  Hideki Aikoh ,  Hironori Tomita ,  Masanari Mohri

发明人： Osamu Mizuno ,  Tohru Nakamura ,  Hideki Aikoh ,  Hironori Tomita ,  Masanari Mohri

IPC分类号： G11B17/028 ,  G11B17/04

CPC分类号： G11B17/057 ,  G11B17/0282 ,  G11B17/0284 ,  G11B17/0565

摘要： In a clamp mechanism, an adapter, and an optical disc apparatus for compatibly playing back the MD and CD having different centering hole diameters and reference heights, a first clamp mechanism has a taper cone section for both an MD and a CD, while a second clamp mechanism has an MD turntable and a CD clamper which is driven in contact with the MD turntable while clamping the CD. The adapter is a disc which has a hole having the same inner diameter as that of the centering hole of the MD and a thickness of 0.8 mm, the adapter to be attached to the CD. A first optical disc apparatus has an MD spindle motor and a CD spindle motor, and an optical system including an objective lens is arranged on a straight line that connects both the spindle motors. A second optical disc apparatus has a spindle motor having an MD turntable and a CD turntable at both its ends.

摘要翻译： 在用于兼容地回放具有不同定心孔直径和参考高度的MD和CD的适配器和光盘装置中，第一夹紧机构具有用于MD和CD的锥形锥形部分，而第二 夹紧机构具有MD转盘和CD夹持器，其在夹住CD时被驱动与MD转盘接触。 适配器是具有与MD的定心孔相同的内径的孔和0.8mm的厚度的盘，即要附接到CD的适配器。 第一光盘装置具有MD主轴电机和CD主轴电机，并且包括物镜的光学系统布置在连接两个主轴电动机的直线上。 第二光盘装置具有在其两端具有MD转盘和CD转台的主轴电动机。

公开(公告)号：US5319497A

公开(公告)日：1994-06-07

申请号：US877705

申请日：1992-05-04

申请人： Kanji Wakabayashi ,  Hironori Tomita ,  Tohru Nakamura ,  Noboru Kikuchi

发明人： Kanji Wakabayashi ,  Hironori Tomita ,  Tohru Nakamura ,  Noboru Kikuchi

IPC分类号： G02B7/00 ,  G02B7/08 ,  G11B7/09 ,  G11B7/095 ,  G02B7/04

CPC分类号： G02B7/005 ,  G02B7/08 ,  G11B7/0935

摘要： A lens drive device for an optical information recording and/or reproducing head, which has a cylindrical lens holder for the support of an objective lens assembly and a tubular guide bearing receiving the lens holder for sliding and rotary motions in a direction parallel to and about the longitudinal axis of the lens holder. The device also has magnetic yokes positioned on respective sides of the guide bearing and each having tracking and focusing coils wound therearound. The lens holder has two permanent magnets embedded therein with their respective different poles exposed radially outwardly from a peripheral surface of the lens holder. The guide bearing has two windows defined therein at respective locations corresponding to the respective positions of the permanent magnets in the lens holder. When the focusing coils on the respective yokes are energized, the lens holder can be driven in a focusing direction parallel to the longitudinal axis of the lens holder, while when the tracking coils on the respective yokes are energized, the lens holder can be driven in a tracking direction generally perpendicular to the longitudinal axis of the lens holder.

摘要翻译： 一种用于光学信息记录和/或再现头的透镜驱动装置，其具有用于支撑物镜组件的柱面透镜保持件和容纳透镜保持器的管状引导轴承，用于在平行于和绕其的方向上进行滑动和旋转运动 透镜架的纵向轴线。 该装置还具有位于导向轴承的相应侧面上的磁轭，并且每个磁轭都缠绕在其周围。 透镜架具有嵌入其中的两个永磁体，其各自的不同极从透镜保持器的外周表面径向向外露出。 引导轴承在对应于透镜保持器中的永磁体的相应位置的相应位置处限定有两个窗口。 当各个轭的聚焦线圈通电时，可以在平行于透镜保持器的纵向轴线的聚焦方向上驱动透镜保持器，而当各个轭的跟踪线圈被通电时，透镜保持器可以被驱动 大致垂直于透镜保持器的纵向轴线的跟踪方向。

公开(公告)号：US5241528A

公开(公告)日：1993-08-31

申请号：US996173

申请日：1992-12-23

申请人： Masanari Mohri ,  Hironori Tomita ,  Atsushi Ishizuka ,  Tohru Nakamura ,  Shinichi Tanaka

发明人： Masanari Mohri ,  Hironori Tomita ,  Atsushi Ishizuka ,  Tohru Nakamura ,  Shinichi Tanaka

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/12 ,  G11B7/135 ,  G11B25/04

CPC分类号： G11B7/0857 ,  G11B7/093 ,  G11B7/123

摘要： An optical pickup having an optical disk (22); a laser diode (11); an objective lens for forming a beam spot on the optical disk; an optical element for guiding a beam from the laser diode to the objective lens; a photodetector for converting a reflected beam from the optical disk into an information signal and an error signal; an optical holder to which at least the objective lens is secured; a first circuit board (17) to which at least the laser diode and the photodetector are attached; an optical base to which the first circuit board (17), is secured; at least the laser diode, the optical element and the photodetector being sealed by the optical holder and the optical base so as to form an optical unit; a stationary member; a second circuit board (28) secured to the stationary member; an elastic support member (21) for elastically supporting the optical unit, which is electrically connected to the first and second circuit boards; at least one permanent magnet (23) secured to the optical unit; a first drive member for driving the optical unit in a direction substantially parallel to a rotational axis of the optical disk; and a second drive member for driving the optical unit in a direction substantially perpendicular to the rotational axis of the optical disk.

摘要翻译： 一种具有光盘（22）的光学拾取器。 激光二极管（11）; 用于在光盘上形成束斑的物镜; 用于将来自激光二极管的光束引导到物镜的光学元件; 用于将来自光盘的反射光束转换为信息信号和误差信号的光电检测器; 至少固定有物镜的光学保持器; 至少安装有激光二极管和光电检测器的第一电路板（17）; 固定第一电路板（17）的光学基座; 至少激光二极管，光学元件和光电检测器被光学保持器和光学基座密封以形成光学单元; 固定构件 固定在固定部件上的第二电路板（28） 用于弹性支撑所述光学单元的弹性支撑构件（21），所述弹性支撑构件电连接到所述第一和第二电路板; 固定在所述光学单元上的至少一个永磁体（23） 第一驱动部件，用于沿与光盘的旋转轴线大致平行的方向驱动光学部件; 以及用于在基本上垂直于光盘的旋转轴线的方向上驱动光学单元的第二驱动构件。

公开(公告)号：US5224083A

公开(公告)日：1993-06-29

申请号：US556000

申请日：1990-07-16

申请人： Kanji Wakabayashi ,  Hironori Tomita ,  Tohru Nakamura ,  Noboru Kikuchi

发明人： Kanji Wakabayashi ,  Hironori Tomita ,  Tohru Nakamura ,  Noboru Kikuchi

IPC分类号： G11B7/085

CPC分类号： G11B7/085

摘要： From the start of descending of a disk-shaped recording medium in a direction of approaching an objective lens in the optical axis direction by a loading mechanism until it is set at a specified position with respect to a spindle motor, a DC current is supplied to an optical axis direction driving coil through an evading current feeding circuit in a direction for a movable part to depart from the disk-shaped recording medium, and the movable part is located at the remotest position from the disk-shaped recording medium due to an electromagnetic force generated by the DC current flowing in the optical axis direction driving coil and a permanent magnet, so that the disk-shaped recording medium and the objective lens will not collide against each other even if an objective lens with a short working distance is used.

摘要翻译： 从盘状记录介质的下降开始，通过加载机构在光轴方向上接近物镜的方向下降到相对于主轴电机的规定位置为止，直流电流被供给到 光轴方向驱动线圈，其通过避让电流馈送电路沿着可移动部分的方向离开盘状记录介质，并且可移动部分由于电磁场位于盘形记录介质的最远位置 由于在光轴方向驱动线圈上流过的直流电流产生的力和永久磁铁，即使使用了短工作距离的物镜，盘状记录介质和物镜也不会相互碰撞。