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    • 2. 发明授权
    • Objective-lens actuator
    • 物镜驱动器
    • US5548449A
    • 1996-08-20
    • US255930
    • 1994-06-07
    • Tsutomu MatsuiYuki Fujimura
    • Tsutomu MatsuiYuki Fujimura
    • G11B7/085G11B7/09G02B7/02
    • G11B7/093G11B7/0932G11B7/0933G11B7/0935
    • It is the object of the invention to provide the actuator for the objective lens, suitable for the optical disc apparatus with high speed access property and high drive sensitivity especially in the track drive direction, and to solve problems concerning with manufacturing processes, by using metallic leaf springs with high reliability for supporting the lens holder to make its movements to be translation motions in both focus and tracking drive directions. The lens holder 22, a movable object, is supported by four leaf springs 21a to 21d, thereby its movements is pure translation motions in both focus and tracking drive directions. The drive sensitivity in the track drive direction is largely increased by designing and improving configurations of the magnetic circuit and the focus and tracking drive coils. For tracking drive motion, a pair of tracking drive coils are fixed to two opposite sides of the focus drive coils, and the magnetic circuit contains two plate magnets 15 and two bar magnets 16, such that the arrangement of magnets is line symmetrically with respect to the axis of the objective lens. The lens holder 22 is supported by the actuator base 11 is provided with an air gap 30, the width of which is adjustable by the aid of needle screws 19 and 20 to adjust the inclination of the lens holder 22 in the tracking and tangential directions respectively.
    • 本发明的目的是提供一种用于物镜的致动器,适用于具有高速存取性能和高驱动灵敏度的光盘装置,特别是在轨道驱动方向上,并且通过使用金属制造方法来解决与制造工艺有关的问题 板簧具有高可靠性,用于支撑透镜架,使其移动成为焦点和跟踪驱动方向的平移运动。 透镜支架22是可移动物体,由四个板簧21a至21d支撑,因此其移动是在焦点和跟踪驱动方向上的纯平移运动。 通过设计和改进磁路和聚焦跟踪驱动线圈的配置,大大提高了磁道驱动方向的驱动灵敏度。 为了跟踪驱动运动,一对跟踪驱动线圈固定到聚焦驱动线圈的两个相对侧,并且磁路包含两个板状磁体15和两个磁棒16,使得磁体的布置相对于 物镜的轴线。 透镜支架22由致动器基座11支撑设置有气隙30,其空隙30借助于针螺钉19和20可调节,以分别调整透镜架22在跟踪和切向方向上的倾斜度 。
    • 7. 发明授权
    • Optical pickup device
    • 光学拾取装置
    • US06946634B2
    • 2005-09-20
    • US10874759
    • 2004-06-24
    • Tsutomu Matsui
    • Tsutomu Matsui
    • G11B7/09G01N21/86G01V8/00G02B7/04G02B27/40G02B27/64G11B7/13G11B7/135
    • G11B7/1365G11B7/0909G11B7/1381
    • In an optical pickup device provided with an optical system for guiding and focusing three-beam laser light along a predetermined route onto a recording surface of an optical disk and guiding a reflected light from the recording surface along the same route, a transparent plate, whereof a normal line is inclined by 45° with respect to an optical axis of the reflected light and is fixed in the direction in which the component of the normal line which is vertical to the optical axis is fixed to a direction of being rotated from a horizontal direction by 45° about the optical axis, is provided on the route of the reflected light between a beam splitter and an optical sensor.
    • 在设置有用于沿着预定路径将三光束激光引导并聚焦到光盘的记录表面并沿着相同路线引导来自记录表面的反射光的光学系统的光学拾取装置中, 法线相对于反射光的光轴倾斜45°,并且沿着与光轴垂直的法线的分量固定在从水平方向旋转的方向的方向 在光束分离器和光学传感器之间的反射光的路线上设置围绕光轴的方向45°。