公开(公告)号：EP1473715A4

公开(公告)日：2007-07-25

申请号：EP03703254

申请日：2003-02-07

Applicant: SONY CORP

Inventor： IIDA ATSUSHI ,  WATANABE TOSHIO ,  TANASE HIRONOBU ,  YAMAMOTO KENJI ,  HASHIMOTO GAKUJI

IPC: G11B7/09

CPC classification number: G11B7/13925 ,  G11B7/093 ,  G11B7/0932 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/1369

Abstract: An optical head enabling a size reduction so that the optical head can be stored in an opening of a cartridge for a disk and enabling an improvement in the dynamic performance as the density and transfer rate are increased is provided. In a two-axis actuator optical head capable of driving an objective lens (102) along the Z axis in the focus direction, that is, vertical to the surface of the optical disk and along the X axis in the tracking direction, that is, the radial direction of the optical disk. The objective lens (102) is disposed in the center of the coil bobbin (101), a focusing coil (103) is disposed around the coil bobbin (101) and is wound around the X axis, and tracking coils (104a and 104b) are disposed on both ends of the coil bobbin (101) in the X axis direction and are wound around the X axis. Pairs of magnets (107a to 107d) are disposed plane-symmetrically with the Z-Y plane including the Z axis aligned with the optical axis of the objective lens (102) and the Y axis and with the Z-X plane including the Z axis and the X axis.

Abstract translation: 本发明的目的在于提供一种小型化的光学头，其尺寸足以容纳在磁盘盒的开口中，并具有适应高密度和高传输速率的增强的动态性能。 光学头是双轴致动器系统，其中物镜（102）沿平行于垂直于光盘的聚焦方向的Z轴以及平行于作为径向的跟踪方向的X轴被驱动 光盘。 物镜（102）设置在线圈架（101）的中心。 一个聚焦线圈（103）围绕线圈架（101）上的Z轴提供。 在线圈架（101）的X轴两端，在绕线架（101）的X轴周围设置有跟踪线圈（104a，104b）。 磁体（107a至107d）相对于包括平行于物镜（102）的光轴和Y轴的Z轴的ZY平面以及相对于包括Z轴的ZX平面 轴和X轴。

公开(公告)号：JP2003030890A

公开(公告)日：2003-01-31

申请号：JP2001211125

申请日：2001-07-11

Applicant: Sony Corp ,  ソニー株式会社

Inventor： IIDA ATSUSHI ,  WATANABE TOSHIO

IPC: G11B7/004 ,  G11B7/085 ,  G11B7/125 ,  G11B7/135

Abstract: PROBLEM TO BE SOLVED: To provide an optical head which quickly controls the distance between first and second expander lenses constituting a beam expander in a wide range and can be made small-sized. SOLUTION: First and second expander lenses 6 and 5 are arranged at an interval on a single optical axis in the direction of the optical axis, and a light beam passing a quarter-wave plate 7 passes the first and second expander lenses 6 and 5 in this order to have the beam diameter expanded. The first and second expander lenses 6 and 5 are so constituted that their optical axes may coincide with those of first and second objective lenses 4 and 3. A first actuator 16 and a second actuator 15 are constituted so as to move the first and second expander lenses 6 and 5 in the directions of optical axes.

Abstract translation: 要解决的问题：提供一种能够在宽范围内快速控制构成扩束器的第一和第二扩张器透镜之间的距离的光学头，并且可以做成小尺寸。 解决方案：第一和第二扩展透镜6和5沿着光轴方向以一个光轴间隔布置，并且通过四分之一波片7的光束穿过第一和第二扩展器透镜6和5在 这个顺序使光束直径扩大。 第一和第二扩展透镜6和5的构造使得它们的光轴可以与第一和第二物镜4和3的光轴重合。第一致动器16和第二致动器15被构造成使第一和第二扩展器 透镜6和5在光轴方向上。

公开(公告)号：JP2005056487A

公开(公告)日：2005-03-03

申请号：JP2003285269

申请日：2003-08-01

Applicant: Sony Corp ,  ソニー株式会社

Inventor： IIDA ATSUSHI ,  KANAZAWA TAKAYASU

IPC: G11B25/04 ,  G11B7/00 ,  G11B7/085 ,  G11B7/135

CPC classification number: G11B7/08582 ,  G11B2007/0006

Abstract: PROBLEM TO BE SOLVED: To provide a small-sized optical disk device with which recording/reproducing to and from a plurality of kinds of optical disks, such as CDs, DVDs and BDs (blue-ray Disks), are possible and not only the application to AV but also the development to built-in storage for PCs is possible. SOLUTION: The optical disk device 1 is fixed and arranged with an optical pickup 10a of the CD/DVD combination and an optical pickup 10b for the BD opposite to each other across a spindle motor 12. The spindle motor 12 is moved between the optical pickups 10a and 10b by a feed mechanism constituted of a ball screw 15, a drive motor 16 and a guide shaft 17, etc. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种可以从多种光盘（例如CD，DVD和BD（蓝光光盘））进行记录/再现的小尺寸光盘装置，并且 不仅可以应用于AV，还可以开发用于PC的内置存储。 解决方案：光盘设备1被固定并配置有CD / DVD组合的光学拾取器10a和用于BD的光学拾取器10b，用于相对于主轴电动机12彼此相对。主轴电动机12在 光学拾取器10a和10b由通过滚珠丝杠15，驱动马达16和引导轴17等构成的进给机构。（C）2005，JPO＆NCIPI

公开(公告)号：JP2002074734A

公开(公告)日：2002-03-15

申请号：JP2000265275

申请日：2000-09-01

Applicant: SONY CORP

Inventor： KIJIMA KOICHIRO ,  KOCHIYAMA AKIRA ,  YAMAMOTO KENJI ,  HASHIMOTO GAKUJI ,  IIDA ATSUSHI

IPC: G11B7/09 ,  G11B7/135 ,  G11B7/1374 ,  G11B7/22

Abstract: PROBLEM TO BE SOLVED: To provide an optical head in which thermal stress caused by an optical lens attached to a bobbin can be reduced. SOLUTION: The optical head 110 is equipped with the bobbin 10 which is formed with a center hole 10H, and the optical lens 20 which is attached to the bobbin 10 through a thermal expansion relaxing member 40 formed with an opening 40H. The optical lens 20 is provided with a base plate 24A consisting of an optical material whose thermal expansion coefficient is different from that of the bobbin 10. The base plate 24A is provided with a projected part 21 having the function of a convex lens and with a flat part 22 situated on the periphery of the projected part 21. The flat part 22 is stuck to the thermal expansion relaxing member 40 in a manner that the projected part 21 is fitted to the opening 40H. The optical lens 20 is arranged so that the center axis or its extension of the projected part 21 passes through the center hole 10H of the bobbin 10, while the center axis of the projected part 21 is aligned with that of the center hole 10H of the bobbin 10.

公开(公告)号：JP2006004176A

公开(公告)日：2006-01-05

申请号：JP2004179827

申请日：2004-06-17

Applicant: Sony Corp ,  ソニー株式会社

Inventor： IIDA ATSUSHI ,  WATANABE TOSHIO

IPC: G05B13/02

Abstract: PROBLEM TO BE SOLVED: To enable highly precise control at low cost by controlling a controlled object of continuous-time system with a compensator of discrete-time system without using an approximation method in a digital servo control device such as an actuator of optical pickup or the like.
SOLUTION: In a digital servo system of the actuator supported by a spring, the discrete-time compensator is provided for designing the continuous-time controlled object without approximation on the basis of a "Sampled value H infinite repetition control theory with the use of lifting". Accordingly, even in the digital servo system using a signal processor with a comparatively long period of sampling, and also, even in an optical disk system aimed at a high transfer rate, the approximation between sample points due to discretization of signals is avoided, thereby providing an optical pickup having a superior nominal rate performance and robust stability.
COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 要解决的问题：为了通过利用离散时间系统的补偿器来控制连续时间系统的受控对象而不使用数字伺服控制装置中的近似方法来实现低成本的高精度控制，所述数字伺服控制装置例如是 光学拾取器等。 解决方案：在由弹簧支撑的致动器的数字伺服系统中，提供了离散时间补偿器，用于基于“采样值H无限重复控制理论与 使用起重“。 因此，即使在采用相当长的采样时间的信号处理器的数字伺服系统中，即使在高传输速率的光盘系统中也避免了由于信号的离散化导致的采样点之间的近似，从而 提供具有优异的标称速率性能和鲁棒稳定性的光学拾取器。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JP2003303430A

公开(公告)日：2003-10-24

申请号：JP2002130331

申请日：2002-05-02

Applicant: Sony Corp ,  ソニー株式会社

Inventor： IIDA ATSUSHI ,  WATANABE TOSHIO ,  TANASE HIRONOBU ,  YAMAMOTO KENJI ,  HASHIMOTO GAKUJI

IPC: G11B7/09 ,  G11B7/125 ,  G11B7/135

CPC classification number: G11B7/13925 ,  G11B7/093 ,  G11B7/0932 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/1369

Abstract: PROBLEM TO BE SOLVED: To achieve a decreased size small enough to be accommodated in the opening of a disk cartridge and also an enhanced dynamic performance adaptable to high density and high transfer rate. SOLUTION: The optical head is of a two-axis actuator system in which an objective lens 102 is driven along the Z-axis parallel to the focusing direction vertical to the optical disk surface and along the X-axis parallel to the tracking direction which is a radial direction of the optical disk. The objective lens 102 is disposed at the center of a coil bobbin 101. A focusing coil 103 is provided around the Z-axis on the coil bobbin 101. Tracking coils 104a, 104b are provided around the X-axis on the coil bobbin 101 at both ends of the coil bobbin 101 along the X-axis. Magnets 107a-107d are so arranged as to be symmetrical with respect to the Z-Y plane including the Z-axis parallel to the optical axis of the objective lens 102 and the Y-axis and with respect to the Z-X plane including the Z-axis and the X-axis. COPYRIGHT: (C)2004,JPO

Abstract translation: 要解决的问题：为了实现小到足以容纳在盘盒的打开中的减小的尺寸，以及适应于高密度和高传送速率的增强的动态性能。 解决方案：光头是一个双轴致动器系统，其中物镜102沿平行于与光盘表面垂直的聚焦方向的Z轴并沿平行于跟踪的X轴驱动 方向是光盘的径向。 物镜102设置在线圈架101的中心。在线圈架筒101的Z轴周围设置有聚光线圈103.在线圈架101上的X轴周围设置有跟踪线圈104a，104b 线圈架101的沿X轴的两端。 磁铁107a-107d被布置为相对于包括平行于物镜102和Y轴的Z轴的Z轴并且相对于包括Z轴的ZX平面的ZY平面对称 X轴。 版权所有（C）2004，JPO