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    • 7. 发明授权
    • Lens drive mechanism and optical pickup having same
    • 透镜驱动机构和具有其的光学拾取器
    • US08004773B2
    • 2011-08-23
    • US12463670
    • 2009-05-11
    • Ryozo HosodaTetsuya YoshidaShinya Hatano
    • Ryozo HosodaTetsuya YoshidaShinya Hatano
    • G02B15/14
    • G11B7/1376G11B7/0927
    • A lens drive mechanism includes a drive source; a lead screw that is connected to the drive source and rotated by operation of the drive source; a nut member that screws on the lead screw and moves as the lead screw rotates; a lens hold portion that is so disposed as to move as the nut member moves and hold a lens; a guide member that guides the lens hold portion to move in the same direction as that of movement of the nut member; and a leaf spring member that if the nut member is situated near one end of a thread portion of the lead screw, pressurizes the nut member toward the other end of the thread portion of the lead screw.
    • 透镜驱动机构包括驱动源; 导螺杆,其连接到驱动源并通过驱动源的操作而旋转; 一个螺母,螺丝拧在导螺杆上,随着导螺杆的旋转而移动; 透镜保持部,其设置成随着螺母构件移动并保持透镜而移动; 引导构件,其引导透镜保持部沿与螺母构件的移动相同的方向移动; 以及板簧构件,如果所述螺母构件位于所述导螺杆的螺纹部的一端附近,则将所述螺母构件朝向所述丝杠的螺纹部的另一端加压。
    • 10. 发明授权
    • Heat treatment method of thermoplastic resin film and apparatus thereof
    • 热塑性树脂薄膜的热处理方法及其设备
    • US07718761B2
    • 2010-05-18
    • US12057879
    • 2008-03-28
    • Tetsuya Yoshida
    • Tetsuya Yoshida
    • C08F6/00C08G63/00
    • C08F251/02B29C55/08B29C55/20B29C71/02B29C2071/022B29K2001/00B29K2001/12B29K2995/0018B29L2007/002
    • An aspect of the invention provides a heat treatment method of a thermoplastic resin film comprising running a strip shaped thermoplastic resin film in a longitudinal direction and heating the thermoplastic resin film while holding the edge of the film in a width direction to conduct a heat treatment, wherein a tension of the thermoplastic resin film in the width direction is controlled to be constant. According to the aspect of the invention, since a thermoplastic resin film during a heat treatment is held with a constant tension in a width direction, the thermoplastic resin film during the heat treatment can be prevented from sagging or pulling excessively. Therefore, occurrence of variability of optical characteristics can be prevented, and thus a thermoplastic resin film excellent in optical characteristics can be produced.
    • 本发明的一个方面提供一种热塑性树脂薄膜的热处理方法,其特征在于,在长度方向上使带状的热塑性树脂薄膜沿着宽度方向保持薄片的边缘,同时对该热塑性树脂薄膜进行加热,进行热处理, 其中热塑性树脂膜在宽度方向上的张力被控制为恒定。 根据本发明,由于热处理时的热塑性树脂膜在宽度方向上保持恒定的张力,所以可以防止热处理时的热塑性树脂膜的下垂或拉拔过度。 因此,可以防止发生光学特性的变化,从而可以制造出光学特性优异的热塑性树脂膜。