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    Optical pickup assembly and method of detecting tilt
    1.
    发明授权
    Optical pickup assembly and method of detecting tilt 失效
    光拾取组件和倾斜检测方法

    公开(公告)号：US06466529B1

    公开(公告)日：2002-10-15

    申请号：US09680463

    申请日：2000-10-06

    申请人： Seok-jung Kim ,  Yong-hoon Lee ,  Tae-kyung Kim ,  Jang-hoon Yoo

    发明人： Seok-jung Kim ,  Yong-hoon Lee ,  Tae-kyung Kim ,  Jang-hoon Yoo

    IPC分类号： G11B700

    CPC分类号： G11B7/0935 ,  G11B7/0933 ,  G11B7/0956

    摘要： 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.

    摘要翻译： 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。

    Optical pickup device
    2.
    发明授权
    Optical pickup device 失效
    光学拾取装置

    公开(公告)号：US06400666B1

    公开(公告)日：2002-06-04

    申请号：US09635520

    申请日：2000-08-09

    申请人： Jang-hoon Yoo ,  Kun-ho Cho ,  Yong-hoon Lee ,  Seok-jung Kim ,  Seung-tae Jung ,  Chul-woo Lee ,  Joong-eon Seo

    发明人： Jang-hoon Yoo ,  Kun-ho Cho ,  Yong-hoon Lee ,  Seok-jung Kim ,  Seung-tae Jung ,  Chul-woo Lee ,  Joong-eon Seo

    IPC分类号： G11B7095

    CPC分类号： G11B7/1353 ,  G11B7/0956

    摘要： An optical pickup device includes a light source for generating and emitting light, optical path changing means for changing a proceeding path of incident light, an objective lens for focusing incident light on a recording medium which has a recording surface where information is recorded and a protection layer, at the side where light is input, for protecting the recording surface, a main photodetector for detecting the information signal and/or an error signal by receiving the light reflected by the recording surface of the recording medium and passing through the objective lens and the optical path changing means, and an inclination detecting unit for detecting inclination of the recording medium by receiving the light emitted from the light source and reflected by the surface of the protection layer or the recording surface of the recording medium. Thus, since the inclination of the recording medium is detected using the light emitted from the light source and reflected by the surface of the protection layer or the recording surface of the recording medium, without an additional tilt sensor, the number of parts is reduced and the structure of the device is simplified.

    摘要翻译： 一种光拾取装置，包括用于产生和发光的光源，用于改变入射光的行进路径的光路改变装置，用于将入射光聚焦在具有记录信息的记录表面的记录介质上的物镜和保护 层，在输入光的一侧用于保护记录表面;主光电检测器，用于通过接收由记录介质的记录表面反射并穿过物镜的光检测信息信号和/或误差信号;以及 光路改变装置和倾斜检测单元，用于通过接收从光源发射并被保护层的表面或记录介质的记录表面反射的光来检测记录介质的倾斜度。 因此，由于使用从光源发出并由保护层的表面或记录介质的记录表面反射的光来检测记录介质的倾斜度，所以没有附加的倾斜传感器，部件的数量减少，并且 简化了设备的结构。

    Optical pickup device
    3.
    发明授权
    Optical pickup device 失效
    光学拾取装置

    公开(公告)号：US6114689A

    公开(公告)日：2000-09-05

    申请号：US299664

    申请日：1999-04-27

    申请人： Kun-ho Cho ,  Jang-hoon Yoo ,  Yong-hoon Lee ,  Chul-woo Lee ,  Chong-sam Chung

    发明人： Kun-ho Cho ,  Jang-hoon Yoo ,  Yong-hoon Lee ,  Chul-woo Lee ,  Chong-sam Chung

    IPC分类号： G02B3/08 ,  G02B5/18 ,  G02B13/00 ,  G11B7/1374 ,  G02B3/00 ,  G11B7/12

    CPC分类号： G11B7/1353 ,  G02B3/08 ,  G02B5/1876 ,  G11B7/122 ,  G11B7/1362 ,  G11B7/1374 ,  G11B7/1384 ,  G11B7/1387

    摘要： An optical pickup device includes a light module, emitting light and receiving light reflected from a recording medium, and a solid immersion lens (SIL) member disposed in an optical path between the light module and the recording medium. The SIL has a planar surface facing the recording medium and a plurality of elliptically curved surfaces opposite the recording medium. The elliptically curved surfaces have different radii of curvature arranged symmetrical with respect to a central axis for focusing the incident light to form a tight beam spot on a recording plane of the recording medium.

    摘要翻译： 一种光学拾取装置，包括发光和接收从记录介质反射的光的光模块和设置在光模块和记录介质之间的光路中的固体浸没透镜（SIL）部件。 SIL具有面向记录介质的平面和与记录介质相对的多个椭圆曲面。 椭圆曲面具有相对于中心轴对称布置的不同的曲率半径，用于聚焦入射光以在记录介质的记录平面上形成紧束光斑。

    Optical pickup apparatus having a holographic optical element
    8.
    发明授权
    Optical pickup apparatus having a holographic optical element 失效
    具有全息光学元件的光学拾取装置

    公开(公告)号：US5805556A

    公开(公告)日：1998-09-08

    申请号：US777130

    申请日：1996-12-30

    申请人： Chul-woo Lee ,  Jang-hoon Yoo ,  Yong-hoon Lee ,  Kyung-hwa Rim

    发明人： Chul-woo Lee ,  Jang-hoon Yoo ,  Yong-hoon Lee ,  Kyung-hwa Rim

    IPC分类号： G11B7/12 ,  G11B7/135 ,  G11B7/00

    CPC分类号： G11B7/1353 ,  G11B7/123

    摘要： An optical pickup apparatus for recording and reproducing information, which is manufactured to be extremely small in a hybrid type. The optical pickup apparatus includes a first holographic optical element as a beam expander for diffracting to enlarge a diverging angle of an incident beam emitted from a light source and a second holographic optical element as an object lens for diffracting the incident beam whose diverging angle is enlarged by the first holographic optical element to focus the incident beam on an optical disk. Here, the first holographic optical element has a function of a beam splitter for diffracting a reflected beam to be separated as well as a function of a beam expander. The optical pickup apparatus is manufactured to be extremely small and ultralight due to its short optical path. Therefore, the optical pickup apparatus is influential on the miniaturization of various optical information processing systems, and contributes to a stable operation and a high speed search due to its excellent optical performance.

    摘要翻译： 一种用于记录和再现信息的光学拾取装置，其被制造为非常小的混合型。 光拾取装置包括作为扩束器的第一全息光学元件，用于衍射以扩大从光源发射的入射光束的发散角和第二全息光学元件作为用于衍射发散角度扩大的入射光束的物镜 通过第一全息光学元件将入射光束聚焦在光盘上。 这里，第一全息光学元件具有用于衍射待分离的反射光束的分束器以及光束扩展器的功能。 光学拾取装置由于其光路短而被制造成非常小和超轻。 因此，光学拾取装置对各种光学信息处理系统的小型化有影响，由于其优异的光学性能，有助于稳定的操作和高速搜索。

    ACTUATOR USED WITH AN OPTICAL PICKUP
    9.
    发明申请
    ACTUATOR USED WITH AN OPTICAL PICKUP 有权
    使用光学拾取器的执行器

    公开(公告)号：US20090016178A1

    公开(公告)日：2009-01-15

    申请号：US12235832

    申请日：2008-09-23

    申请人： Seok-jung Kim ,  Yong-hoon Lee ,  Sun-mo Kim

    发明人： Seok-jung Kim ,  Yong-hoon Lee ,  Sun-mo Kim

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1374 ,  G11B7/0933 ,  G11B7/0935 ,  G11B2007/0006

    摘要： 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.

    摘要翻译： 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：<？in-line-formula description =“In-line Formulas”end =“lead”？> WD1> = WD2，<？in-line-formula description =“In-line Formulas”end =“tail”？>光盘与第二物镜之间的间隔距离= WD2 + alpha其中，α= | WD1-WD2 | x （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。

    Micro actuator
    10.
    发明授权
    Micro actuator 失效
    微型执行器

    公开(公告)号：US06600634B1

    公开(公告)日：2003-07-29

    申请号：US09676757

    申请日：2000-10-02

    申请人： Seok-jung Kim ,  Yong-hoon Lee

    发明人： Seok-jung Kim ,  Yong-hoon Lee

    IPC分类号： G11B5596

    CPC分类号： G11B5/5552

    摘要： A micro actuator for moving a head device in a track direction of a recording medium by a magnetic force generated between the magnetic cores. In normal use, the micro actuator is mounted on an actuator arm which pivots in a track direction across a track of the recording medium. The slider moves above the recording medium and has an accommodating portion facing the recording medium. A first magnetic core is arranged to move in the accommodating portion, for supporting the head device. A second magnetic core, separated a predetermined distance from and facing the first magnetic core, is installed in the accommodating portion such that the center of the first magnetic core in a magnetic direction, which is perpendicular to the track direction and horizontal with respect to the surface of the recording medium, is offset from the center of the first magnetic core. A first magnetic coil is wound around the first magnetic core so that the axis of the first magnetic coil runs in the vertical direction and a magnetic force in a direction perpendicular to a surface of the recording medium is generated when current is applied. Leaf springs elastically connects the first magnetic core and the inner side of the accommodating portion in the track direction. When current is applied to the first magnetic coil, the first magnetic core is moved in the track direction by a magnetic force generated between the magnetic cores.

    摘要翻译： 一种用于通过在磁芯之间产生的磁力在记录介质的磁道方向上移动磁头装置的微致动器。 在正常使用中，微型致动器安装在致动器臂上，该致动器臂沿着记录介质的轨道在轨道方向上枢转。 滑块移动到记录介质上方并具有面向记录介质的容纳部分。 第一磁芯布置成在容纳部分中移动，用于支撑头部装置。 与容纳部分隔开预定距离并面对第一磁芯的第二磁芯被安装在容纳部分中，使得第一磁芯的磁心方向的中心与轨道方向垂直并相对于 记录介质的表面偏离第一磁芯的中心。 第一磁性线圈围绕第一磁芯卷绕，使得第一磁性线圈的轴线在垂直方向上延伸，并且当施加电流时产生与记录介质的表面垂直的方向上的磁力。 板弹簧在轨道方向弹性地连接容纳部分的第一磁芯和内侧。 当电流施加到第一磁性线圈时，第一磁芯通过在磁芯之间产生的磁力在轨道方向上移动。