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    OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME
    1.
    发明申请
    OPTICAL PICKUP DEVICE AND OPTICAL DISC APPARATUS APPLYING THE SAME 审中-公开
    光拾取装置和光盘装置

    公开(公告)号：US20120176881A1

    公开(公告)日：2012-07-12

    申请号：US13303393

    申请日：2011-11-23

    申请人： Seong-su PARK ,  Soo-han PARK ,  Jung-woo HONG ,  Se-june PARK ,  Dong-jin SHIN ,  Ichiro MORISHITA

    发明人： Seong-su PARK ,  Soo-han PARK ,  Jung-woo HONG ,  Se-june PARK ,  Dong-jin SHIN ,  Ichiro MORISHITA

    IPC分类号： G11B7/135

    CPC分类号： G11B7/1365 ,  G11B7/1398

    摘要： An optical pickup device is provided. The device includes a semiconductor laser light source which outputs linearly-polarized light having an elliptical shape, an objective lens which focuses light outputted from the semiconductor laser light source, forming an optical spot on an optical disc; and a polarization plate which is disposed placed on an optical path between the semiconductor laser light source and the objective lens, and which polarizes the light outputted from the semiconductor laser light source and transmits elliptically-polarized light, wherein the polarization plate is disposed such that a major axis of the elliptical polarization of the light transmitted by the polarization plate is parallel to or perpendicular to a major axis of the elliptical shape of the light.

    摘要翻译： 提供一种光拾取装置。 该装置包括输出具有椭圆形的线偏振光的半导体激光光源，聚焦从半导体激光光源输出的光的物镜，在光盘上形成光点; 以及偏振板，其设置在所述半导体激光光源与所述物镜之间的光路上，使从所述半导体激光光源输出的光偏振并透射椭圆偏振光，其中，所述偏光板配置为 由偏振板透射的光的椭圆偏振的长轴平行于或垂直于光的椭圆形的长轴。

    CD-DVD compatible optical pickup and optical recording and/or reproducing apparatus using the same
    2.
    发明授权
    CD-DVD compatible optical pickup and optical recording and/or reproducing apparatus using the same 有权
    CD-DVD兼容光学拾取器和使用该CD拾取器的光学记录和/或再现装置

    公开(公告)号：US07254098B2

    公开(公告)日：2007-08-07

    申请号：US10677731

    申请日：2003-10-03

    申请人： Jung-gug Pae ,  Bong-gi Kim ,  Chun-seong Park ,  Soo-han Park ,  Moon-whan Lee ,  Do-whan Nam ,  Seong-su Park ,  Jung-woo Hong ,  Tae-youn Heor

    发明人： Jung-gug Pae ,  Bong-gi Kim ,  Chun-seong Park ,  Soo-han Park ,  Moon-whan Lee ,  Do-whan Nam ,  Seong-su Park ,  Jung-woo Hong ,  Tae-youn Heor

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1275 ,  G11B7/0932 ,  G11B2007/0006

    摘要： A CD-DVD compatible optical pickup in which both on-axis and off-axis light form a circular light spot on a recording surface of an optical recording medium, and an optical recording and/or reproducing apparatus using the same. The CD-DVD compatible optical pickup includes an optical output module, an objective lens, an optical path conversion unit, a photodetector, and an actuator. The optical output module has a mount and light sources emitting light of different wavelengths. The objective lens focuses the emitted light onto two types of optical recording media. The optical path conversion unit between the optical output module and objective lens, converts incident light. The photodetector receives beams emitted from the light sources, reflected from the optical recording media, and then passed through the optical path conversion unit, detecting data and error signals. The actuator has a movable member, moving the objective lens and compensating focusing and tracking error signals.

    摘要翻译： 在光记录介质的记录表面上的同轴和离轴光都形成圆形光点的CD-DVD兼容光学拾取器，以及使用该光拾取器的光学记录和/或再现装置。 CD-DVD兼容光学拾取器包括光输出模块，物镜，光路转换单元，光电检测器和致动器。 光输出模块具有发射不同波长的光的安装座和光源。 物镜将发射的光聚焦到两种类型的光学记录介质上。 光输出模块和物镜之间的光路转换单元转换入射光。 光电检测器接收从光记录介质反射的光源发出的光束，然后通过光路转换单元，检测数据和误差信号。 致动器具有可动构件，移动物镜并补偿聚焦和跟踪误差信号。

    Optical reproducing apparatus capable of using laser diode of two wavelengths
    3.
    发明申请
    Optical reproducing apparatus capable of using laser diode of two wavelengths 审中-公开
    能够使用两个波长的激光二极管的光学再现装置

    公开(公告)号：US20060261243A1

    公开(公告)日：2006-11-23

    申请号：US10569088

    申请日：2003-12-22

    申请人： Soo-han Park ,  Bong-gi Kim ,  Chun-seong Park ,  Jung-woo Hong ,  Jong-uk Kim

    发明人： Soo-han Park ,  Bong-gi Kim ,  Chun-seong Park ,  Jung-woo Hong ,  Jong-uk Kim

    IPC分类号： G02B7/04

    CPC分类号： G11B7/0945 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

    摘要： An optical reproducing apparatus having a photo detector using a laser diode of two wavelengths. A 16-split photo diode for detecting laser beams respectively for a DVD and a CD enables an optical pick-up compatible with a wide variety of optical discs to be achieved by applying the laser diode of two wavelengths. Focusing error signals and tracking error signals are detected by using different methods according to a type of optical disc, improving production yield and decreasing manufacturing costs of a multi-disc reproduction apparatus.

    摘要翻译： 具有使用两个波长的激光二极管的光电检测器的光学再现装置。 分别用于检测DVD和CD的激光束的16分割光电二极管能够通过应用两个波长的激光二极管实现与各种光盘兼容的光学拾取器。 通过使用不同的方法根据光盘的类型来检测聚焦误差信号和跟踪误差信号，提高了生产成本并降低了多盘再现设备的制造成本。

    Diffraction element and optical pick-up apparatus having the same
    7.
    发明授权
    Diffraction element and optical pick-up apparatus having the same 有权
    具有该衍射元件和光学拾取装置的衍射元件

    公开(公告)号：US07643395B2

    公开(公告)日：2010-01-05

    申请号：US11254700

    申请日：2005-10-21

    申请人： Bong-gi Kim ,  Seong-su Park ,  Jung-woo Hong

    发明人： Bong-gi Kim ,  Seong-su Park ,  Jung-woo Hong

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0903 ,  G11B7/1353 ,  G11B2007/0006

    摘要： A diffraction element for an optical pick-up apparatus is capable of precisely controlling the tracking of the pick-up apparatus. The diffraction element includes a diffraction grating divided into a first, a second, and a third region. The second region is located between the first and third regions. Any one of the first region and the third region is inclined at a predetermined angle θ with respect to the second region.

    摘要翻译： 用于光学拾取装置的衍射元件能够精确地控制拾取装置的跟踪。 衍射元件包括分为第一，第二和第三区域的衍射光栅。 第二区域位于第一和第三区域之间。 第一区域和第三区域中的任何一个相对于第二区域以预定角度θ倾斜。

    Optical pickup apparatus
    8.
    发明授权
    Optical pickup apparatus 有权
    光拾取装置

    公开(公告)号：US07450487B2

    公开(公告)日：2008-11-11

    申请号：US11146189

    申请日：2005-06-07

    申请人： Tae-youn Heor ,  Tae-yun Kim ,  Jung-woo Hong

    发明人： Tae-youn Heor ,  Tae-yun Kim ,  Jung-woo Hong

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1381 ,  G11B7/0903 ,  G11B7/131 ,  G11B7/1369 ,  G11B2007/0006

    摘要： A photo detector for use in an optical pickup apparatus that detects a beam reflected from the disc, and includes a substrate for transmitting one main beam and two sub beams reflected from the optical disc; a liquid crystal for refracting the two sub beams, that are transmitted through the substrate, at different refractive indexes according to the wavelength of a laser beam outputted from the laser diode; an electrode material for supplying power to the liquid crystal; a switch for adjusting the magnitude of an applied voltage to the electrode material; and a photodiode on which the main beam and the refracted sub beams while transmitting the substrate and the liquid crystal are projected, and transformed into electric signals. By refracting the beams refracted from the disc at a proper refractive index, the ±1st-order beams can be projected onto the same position, irrespective of the wavelengths.

    摘要翻译： 一种用于检测从光盘反射的光束的光学拾取装置中的光检测器，并且包括用于传输一个主光束的基板和从光盘反射的两个子光束; 用于根据从激光二极管输出的激光束的波长以不同的折射率折射通过基板的两个子光束的液晶; 用于向液晶供电的电极材料; 用于调节施加到电极材料的电压的大小的开关; 并且在将基板和液晶传送的同时投射主光束和折射子光束的光电二极管，并变换为电信号。 通过以适当的折射率折射从光盘折射的光束，不管波长如何，可以将±1 秩光束投影到相同的位置。

    Optical pick-up apparatus
    9.
    发明授权
    Optical pick-up apparatus 有权
    光学拾取装置

    公开(公告)号：US07345820B2

    公开(公告)日：2008-03-18

    申请号：US11111988

    申请日：2005-04-22

    申请人： Soo Han Park ,  Seong Su Park ,  Jung Woo Hong ,  Bong Gi Kim

    发明人： Soo Han Park ,  Seong Su Park ,  Jung Woo Hong ,  Bong Gi Kim

    IPC分类号： G02B5/18 ,  G11B7/00 ,  G11B7/135

    CPC分类号： G11B7/1353 ,  G11B7/131 ,  G11B2007/0006

    摘要： A compatible optical pick-up apparatus, which records to and/or reproduce from both digital versatile disc (DVD)-type optical disks and compact disc (CD)-type optical disks for improving a signal regeneration capacity and a tracking capacity in operation at a high temperature. A polarized hologram of the optical pick-up apparatus is divided into six diffraction regions. The rays of a first light diffracted at the first and second diffraction regions are separately received by divided parts of a first bisected light-receiving portion of a photodetector.

    摘要翻译： 一种兼容的光学拾取装置，其记录到数字多功能光盘（DVD）型光盘和光盘（CD）型光盘和/或从其再现，以改善信号再生能力和操作中的跟踪能力 高温。 光学拾取装置的极化全息图被分为六个衍射区域。 在第一和第二衍射区域衍射的第一光的射线被光电检测器的第一二等分的光接收部分的分开的部分分开接收。

    Diffraction element and optical pick-up apparatus having the same
    10.
    发明申请
    Diffraction element and optical pick-up apparatus having the same 有权
    具有该衍射元件和光学拾取装置的衍射元件

    公开(公告)号：US20060158989A1

    公开(公告)日：2006-07-20

    申请号：US11254700

    申请日：2005-10-21

    申请人： Bong-gi Kim ,  Seong-su Park ,  Jung-woo Hong

    发明人： Bong-gi Kim ,  Seong-su Park ,  Jung-woo Hong

    IPC分类号： G11B7/00

    CPC分类号： G11B7/0903 ,  G11B7/1353 ,  G11B2007/0006

    摘要： A diffraction element for an optical pick-up apparatus is capable of precisely controlling the tracking of the pick-up apparatus. The diffraction element includes a diffraction grating divided into a first, a second, and a third region. The second region is located between the first and third regions. Any one of the first region and the third region is inclined at a predetermined angle e with respect to the second region.

    摘要翻译： 用于光学拾取装置的衍射元件能够精确地控制拾取装置的跟踪。 衍射元件包括分为第一，第二和第三区域的衍射光栅。 第二区域位于第一和第三区域之间。 第一区域和第三区域中的任何一个相对于第二区域以预定角度e倾斜。