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    • 34. 发明授权
    • Actuator used with an optical pickup
    • 执行器与光学拾音器一起使用
    • US07219359B2
    • 2007-05-15
    • US11019992
    • 2004-12-23
    • Seok-jung KimYong-hoon LeeSun-mo Kim
    • Seok-jung KimYong-hoon LeeSun-mo Kim
    • G11B7/12
    • G11B7/1374G11B7/0933G11B7/0935G11B2007/0006
    • An actuator for an optical pickup having a base on which a holder is fixed, a bobbin, a support member, and a magnetic circuit. Pluralities of installation holes are formed in the bobbin such that a plurality of objective lenses to record and/or reproduce optical discs having different recording densities are installed at different heights. The support member has one end coupled to the bobbin and the other end coupled to the holder movably supports the bobbin. The magnetic circuit drives the bobbin in focusing and tracking directions. The magnetic circuit is divided into a first magnetic circuit to drive the objective lenses in the focusing direction, and a second magnetic circuit to drive the objective lenses in the tracking direction, thereby reducing the weight of a moving portion.
    • 一种用于光学拾取器的致动器,其具有固定有保持器的基座,线轴,支撑构件和磁路。 多个安装孔形成在筒管中,使得用于记录和/或再现具有不同记录密度的光盘的多个物镜安装在不同的高度。 支撑构件具有联接到线轴的一端,并且联接到保持器的另一端可移动地支撑线轴。 磁路在聚焦和跟踪方向上驱动线轴。 磁路被分成在聚焦方向上驱动物镜的第一磁路和在跟踪方向上驱动物镜的第二磁路,从而减小移动部分的重量。
    • 36. 发明授权
    • Disk clamping apparatus for disk player
    • 磁盘播放机的磁盘夹紧装置
    • US06826772B2
    • 2004-11-30
    • US10263817
    • 2002-10-04
    • Seok-jung KimChong-sam ChungYong-hoon LeeHan-kook Choi
    • Seok-jung KimChong-sam ChungYong-hoon LeeHan-kook Choi
    • G11B17028
    • G11B17/0284
    • A disk clamping apparatus for a disk player includes a turntable for receiving a disk, a disk clamper which clamps the disk placed on the turntable, and first and second magnetic bodies which are mounted in the corresponding turntable and the disk clamper and provide a clamping force to the disk by acting a reciprocal magnetic force on the turntable and the disk clamper. The first and second magnetic bodies are opposite to each other and partially overlap each other. In the disk clamping apparatus having the above structure, the variation in a clamping force caused by the variation in thickness of disks, received by the disk clamping apparatus, is very small. Accordingly, clamping and de-clamping of the disks having different thickness can be smoothly performed.
    • 一种用于盘播放器的盘夹装置包括用于接收盘的转盘,夹持放置在转盘上的盘的盘夹持器,以及安装在相应转台和盘夹持器中的第一和第二磁体,并提供夹紧力 通过对转台和盘夹持器施加相互的磁力来驱动盘。 第一和第二磁体彼此相对并且部分地彼此重叠。 在具有上述结构的盘夹紧装置中,由盘夹紧装置接收的由盘的厚度变化引起的夹紧力的变化非常小。 因此,可以顺利地执行具有不同厚度的盘的夹紧和去夹紧。
    • 38. 发明授权
    • Optical pickup assembly
    • US06580569B2
    • 2003-06-17
    • US09847602
    • 2001-05-03
    • Han-kook ChoiSeok-jung Kim
    • Han-kook ChoiSeok-jung Kim
    • G02B702
    • G11B7/0933G11B7/093G11B7/0935
    • An optical pickup assembly is provided having a base; an objective lens including a body portion and a lens portion built into the body portion; a suspension wherein one end is fixed to the body portion and the other end is fixed to a holder supporting the objective lens such that the objective lens is movable; coil members formed at the sides of the body portion of the objective lens; permanent magnets mounted on the base, opposite to the coil members; and yokes for guiding magnetic flux generated by the permanent magnets. In the optical pickup assembly, the objective lens is constructed such that the body portion serving as a bobbin is combined with the lens portion, thereby reducing the weight of the moving part. As a result, the moving part can sensitively accelerate with application of a voltage. In addition, the moment of inertia of the moving part decreases due to the reduced weight thereof, and the secondary resonance frequency of the moving part is increased due to the structure of the objective lens body itself serving as a bobbin. Thus, the optical pickup assembly can efficiently accelerate at a voltage level so that it can be effectively used for high-speed and high-density optical recording/reproduction systems.
    • 39. 发明授权
    • Optical pickup assembly and method of detecting tilt
    • 光拾取组件和倾斜检测方法
    • US06466529B1
    • 2002-10-15
    • US09680463
    • 2000-10-06
    • Seok-jung KimYong-hoon LeeTae-kyung KimJang-hoon Yoo
    • Seok-jung KimYong-hoon LeeTae-kyung KimJang-hoon Yoo
    • G11B700
    • G11B7/0935G11B7/0933G11B7/0956
    • An optical pickup assembly having an elastically supported tilt mechanism. The optical pickup assembly includes a bobbin at which an objective lens is mounted and an elastic support member which supports the bobbin in elastic motion with respect to a holder installed at a base. A focus coil and a tracking coil are installed at the bobbin and form a conducting path for driving the objective lens in a focusing direction and a tracking direction. Tilt coils are installed at one side of the bobbin and form a conductive path for driving tilt of the objective lens. A first magnet and a first yoke generate an electromagnetic force to driving the objective lens together with the current carrying focus coil and tracking coil. A second magnet and a second yoke generate an electromagnetic force to driving the objective lens together with the current carrying tilt coils. A position detecting sensor measures relative inclination of the objective lens with respect to a disk, and a balance member coupled to the bobbin to balance the weight of the tilt coils by applying weight corresponding to the weight of the tilt coils at positions symmetrically opposite to the positions of the tilt coils.
    • 一种具有弹性支撑的倾斜机构的光学拾取器组件。 光拾取器组件包括安装物镜的筒管和相对于安装在基座上的保持器弹性运动地支撑筒管的弹性支撑构件。 聚焦线圈和跟踪线圈安装在线轴上并形成用于沿聚焦方向和跟踪方向驱动物镜的导电路径。 倾斜线圈安装在线轴的一侧,形成用于驱动物镜倾斜的导电路径。 第一磁体和第一磁轭一起产生电磁力以与载流聚焦线圈和跟踪线圈一起驱动物镜。 第二磁体和第二磁轭产生电磁力以与载流倾斜线圈一起驱动物镜。 位置检测传感器测量物镜相对于盘的相对倾斜度,以及平衡构件,其耦合到筒管,以通过将对应于倾斜线圈的重量的重量施加在倾斜线圈的重量上来平衡倾斜线圈的重量, 倾斜线圈的位置。
    • 40. 发明授权
    • Actuator having a plurality of objective lenses installed in a lens holder used with an optical pickup
    • 具有安装在与光拾取器一起使用的透镜架中的多个物镜的致动器
    • US07835253B2
    • 2010-11-16
    • US12235832
    • 2008-09-23
    • Seok-jung KimYong-hoon LeeSun-mo Kim
    • Seok-jung KimYong-hoon LeeSun-mo Kim
    • G11B7/00
    • G11B7/1374G11B7/0933G11B7/0935G11B2007/0006
    • An actuator used with an optical pickup includes: a base on which a holder is fixed; a lens holder in which a plurality of installation holes are formed such that a plurality of objective lenses to record and/or reproduce optical discs having different recording densities are installed at different heights; a support member, which movably supports the lens holder, having one end coupled to the lens holder and the other end coupled to the holder; and a magnetic circuit which drives the lens holder in focusing and tracking directions. The plurality of installation holes include a first installation hole in which a first objective lens for at least one type of low density optical disc is installed, and a second installation hole in which a second objective lens for a higher density optical disc than the low density optical disc is installed. When a working distance of the first objective lens for the low density optical disc installed in the first installation hole is represented as WD1, and a working distance of the second objective lens for the high density optical disc installed in the second installation hole is represented as WD2, the first and second installation holes are provided so that the first and second objective lenses are installed to satisfy the Equation: WD1≧WD2, a separation distance between the optical disc and the second objective lens=WD2+α where, α=|WD1−WD2|×(0.1˜1.0). The second installation hole is located in a more outer circumference of the optical disc than the first installation hole.
    • 与光学拾取器一起使用的致动器包括:固定有保持器的基座; 其中形成多个安装孔的透镜保持器,使得用于记录和/或再现具有不同记录密度的光盘的多个物镜安装在不同的高度; 支撑构件,其可移动地支撑透镜保持器,其一端联接到透镜保持器,另一端联接到保持器; 以及在聚焦和跟踪方向上驱动透镜架的磁路。 多个安装孔包括:第一安装孔,其中安装有用于至少一种类型的低密度光盘的第一物镜;以及第二安装孔,其中用于高密度光盘的第二物镜低于低密度 安装光盘。 当安装在第一安装孔中的低密度光盘的第一物镜的工作距离表示为WD1时,将安装在第二安装孔中的高密度光盘的第二物镜的工作距离表示为 WD2,第一和第二安装孔被设置成使得第一和第二物镜被安装以满足等式:WD1≥DW2,光盘和第二物镜之间的间隔距离= WD2 +α,其中α= | WD1-WD2 |×(0.1〜1.0)。 第二安装孔位于光盘的比第一安装孔更外侧的圆周上。