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。

公开(公告)号：US20050058050A1

公开(公告)日：2005-03-17

申请号：US10918376

申请日：2004-08-16

申请人： Soo-han Park ,  Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Jung-woo Hong

发明人： Soo-han Park ,  Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Jung-woo Hong

IPC分类号： G02B5/30 ,  G02B13/00 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135 ,  G11B7/1392

CPC分类号： G11B7/13927

摘要： An optical pick-up apparatus and method incorporating a spherical aberration compensator is disclosed. The optical pick-up employs the spherical aberration device that comprises a wave plate for converting the phase of beams entering the wave plate and outputting the phase-converted beams; and a liquid crystal panel having a molecular structure for adjusting the phase of circularly-polarized beams, whereby it is possible to compensate for the spherical aberrations of the laser beams emitted from a light source and entering an optical recording medium, and the laser beams which are reflected from the optical recording medium and reenter the liquid crystal panel. As a result, jitter characteristic of the optical pick-up can be enhanced.

摘要翻译： 公开了一种结合球面像差补偿器的光学拾取装置和方法。 光学拾取器采用球面像差装置，其包括波片，用于转换进入波片的光束的相位并输出相位转换的光束; 以及具有用于调节圆偏振光束的相位的分子结构的液晶面板，由此可以补偿从光源发射并进入光记录介质的激光束的球面像差，并且激光束 从光学记录介质反射并重新进入液晶面板。 结果，可以提高光学拾取器的抖动特性。

公开(公告)号：US20070070825A1

公开(公告)日：2007-03-29

申请号：US10577441

申请日：2004-04-09

申请人： Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Chun-seong Park ,  Soo-han Park

发明人： Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Chun-seong Park ,  Soo-han Park

IPC分类号： G11B11/00

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

摘要： An optical pickup apparatus is provided for use in a recording/reproducing apparatus to record/reproduce information on/from recording media having different formats. Such an optical pickup apparatus comprises a dual wavelength laser diode; a hologram module arranged to split a light which is incident to a recording medium into a plurality of beams; and a photo-detector arranged to receive a light beam reflected from the recording medium and detect an information signal and a signal for servo control. Each of the split beams is focused on a predetermined position corresponding to a format of the recording medium. The light beams reflected from the recording medium are detected by the photo-detector to generate a focus error signal and a tracking error signal. Thus, the optical pickup apparatus records and reproduces information on and from recording media having different formats by using a hologram of a simple pattern. The optical structure of the optical pickup apparatus is simple which enables easy assembly and manufacture and provides signal regeneration when operating in a high temperature.

摘要翻译： 提供一种用于记录/再现装置的光拾取装置，用于在具有不同格式的记录介质上记录/再现信息。 这种光拾取装置包括双波长激光二极管; 全息图模块，被布置成将入射到记录介质的光分成多个光束; 以及光检测器，其布置成接收从记录介质反射的光束，并检测信息信号和用于伺服控制的信号。 每个分割光束聚焦在对应于记录介质的格式的预定位置上。 由光检测器检测从记录介质反射的光束，以产生聚焦误差信号和跟踪误差信号。 因此，光学拾取装置通过使用简单图案的全息图在具有不同格式的记录介质上记录和再现信息。 光学拾取装置的光学结构简单，能够容易地进行组装和制造，并且在高温操作时提供信号再生。

公开(公告)号：US07092325B2

公开(公告)日：2006-08-15

申请号：US10460655

申请日：2003-06-13

申请人： Bong-gi Kim ,  Chun-seong Park ,  Soo-han Park ,  Moon-whan Lee ,  Hyo-chan Lee ,  Jong-uk Kim ,  Seong-su Park ,  Tae-youn Heor ,  Do-hoan Nam

发明人： Bong-gi Kim ,  Chun-seong Park ,  Soo-han Park ,  Moon-whan Lee ,  Hyo-chan Lee ,  Jong-uk Kim ,  Seong-su Park ,  Tae-youn Heor ,  Do-hoan Nam

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/0906 ,  G11B2007/0006

摘要： A method of arranging an optical pickup system on a deck of an optical recording and/or reproducing apparatus, which enables detection of a tracking error signal using one photodetector based on a three-beam method and by a differential phase detection method. The optical pickup system includes a light source, a diffractive optical element which diffracts a light beam incident from the light source and splits the same into at least three beams, a plate-type beam splitter which changes a propagation path of the light beam, and a photodetector including at least one main photodetector having at least four sections and a plurality of sub-photodetectors. The optical pickup system is constructed so as to have a reflecting mirror redirect the propagation path of the light beam emitted from the light source toward a recording medium. The method of arranging the optical pickup includes, where the propagation path of the light beam transmitted through the plate-type beam splitter to the photodetector is an optical path axis, arranging the optical pickup system so as to have the optical path axis tilted with respect to an axis in a tangential direction of the recording medium and have the photodetector placed away from a rotation center of a motor that rotates the recording medium, and selectively optimizing the arrangement of the photodetector to detect a tracking error signal by the differential phase detection method.

摘要翻译： 一种在光学记录和/或再现装置的平台上布置光学拾取系统的方法，其能够使用基于三光束方法的一个光电检测器和通过差分相位检测方法检测跟踪误差信号。 光拾取系统包括光源，衍射从光源入射的光束并衍射成至少三个光束的衍射光学元件，改变光束传播路径的板式分束器，以及 光电检测器，其包括至少一个具有至少四个部分的主光电检测器和多个子光电检测器。 光学拾取系统被构造成具有将从光源发射的光束的传播路径重定向到记录介质的反射镜。 布置光学拾取器的方法包括：将透过板式分束器的光束的传播路径传播到光电检测器的方法是将光学拾取系统布置成使光学轴线相对于 到记录介质的切线方向的轴线上，并且将光电检测器放置成远离旋转记录介质的马达的旋转中心，并且选择性地优化光电检测器的布置以通过差分相位检测方法检测跟踪误差信号 。

公开(公告)号：US07881168B2

公开(公告)日：2011-02-01

申请号：US10577441

申请日：2004-04-09

申请人： Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Chun-seong Park ,  Soo-han Park

发明人： Bong-gi Kim ,  Tae-youn Heor ,  Seong-su Park ,  Chun-seong Park ,  Soo-han Park

IPC分类号： G11B7/00

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

摘要： An optical pickup apparatus is provided for use in a recording/reproducing apparatus to record/reproduce information on/from recording media having different formats. Such an optical pickup apparatus comprises a dual wavelength laser diode; a hologram module arranged to split a light which is incident to a recording medium into a plurality of beams; and a photo-detector arranged to receive a light beam reflected from the recording medium and detect an information signal and a signal for servo control. Each of the split beams is focused on a predetermined position corresponding to a format of the recording medium. The light beams reflected from the recording medium are detected by the photo-detector to generate a focus error signal and a tracking error signal. Thus, the optical pickup apparatus records and reproduces information on and from recording media having different formats by using a hologram of a simple pattern. The optical structure of the optical pickup apparatus is simple which enables easy assembly and manufacture and provides signal regeneration when operating in a high temperature.

摘要翻译： 提供一种用于记录/再现装置的光拾取装置，用于在具有不同格式的记录介质上记录/再现信息。 这种光拾取装置包括双波长激光二极管; 全息图模块，被布置成将入射到记录介质的光分成多个光束; 以及光检测器，其布置成接收从记录介质反射的光束，并检测信息信号和用于伺服控制的信号。 每个分割光束聚焦在对应于记录介质的格式的预定位置上。 由光检测器检测从记录介质反射的光束，以产生聚焦误差信号和跟踪误差信号。 因此，光学拾取装置通过使用简单图案的全息图在具有不同格式的记录介质上记录和再现信息。 光学拾取装置的光学结构简单，能够容易地进行组装和制造，并且在高温操作时提供信号再生。

公开(公告)号：US08130622B2

公开(公告)日：2012-03-06

申请号：US12761495

申请日：2010-04-16

申请人： Seong-su Park ,  Soo-han Park ,  Bong-gi Kim ,  Ichiro Morishita ,  Myoung-seok Kim ,  Jung-woo Hong

发明人： Seong-su Park ,  Soo-han Park ,  Bong-gi Kim ,  Ichiro Morishita ,  Myoung-seok Kim ,  Jung-woo Hong

IPC分类号： G11B7/00 ,  G11B7/135

CPC分类号： G11B7/1398 ,  G11B7/1275 ,  G11B7/1367 ,  G11B2007/0006

摘要： An optical pickup apparatus includes a light generating unit to generate a light to record or reproduce information, an objective lens to focus the light generated from the light generating unit onto a disk, and a multi-sectional polarizer disposed on a light path between the light generating unit and the objective lens and divided into a plurality of sectors having their individual optical axes.

摘要翻译： 一种光拾取装置，包括产生光以记录或再现信息的光产生单元，将从光产生单元产生的光聚焦到盘上的物镜，以及设置在光之间的光路上的多截面偏振片 生成单元和物镜，并分成具有各自的光轴的多个扇区。

公开(公告)号：US07715297B2

公开(公告)日：2010-05-11

申请号：US11150116

申请日：2005-06-13

申请人： Tae-youn Heor ,  Bong-gi Kim ,  Seong-su Park

发明人： Tae-youn Heor ,  Bong-gi Kim ,  Seong-su Park

IPC分类号： G11B7/00

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

摘要： An optical pickup apparatus and method for recording and/or reproducing information onto and/or from optical discs having diverse specifications. Particularly, a diffraction grating for use in the optical pickup apparatus includes a substrate for refracting an output beam from a laser diode at a predetermined refractive index, a liquid crystal for refracting the beam, which is transmitted through the substrate, at a different refractive index and direction according to a track pitch of the optical disc, an electrode material for supplying power to the liquid crystal, and a switch for controlling power supply to the electrode material. Electrode materials are aligned with various spacing in order to change the refractive index of the liquid crystal according to the wavelength of a laser and the specification of an optical disc used. Also, power supply to the electrode materials is controlled depending on the optical disc specification.

摘要翻译： 一种用于在具有不同规格的光盘上和/或从其上记录和/或再现信息的光学拾取装置和方法。 特别地，用于光学拾取装置的衍射光栅包括用于以预定折射率折射来自激光二极管的输出光束的衬底，用于折射透射通过衬底的光束的液晶以不同的折射率 和根据光盘的轨道间距的方向，用于向液晶供电的电极材料和用于控制对电极材料的电力供给的开关。 为了根据激光的波长和使用的光盘的规格来改变液晶的折射率，电极材料以各种间隔对准。 此外，根据光盘规格来控制对电极材料的供电。

公开(公告)号：US20050276205A1

公开(公告)日：2005-12-15

申请号：US11150116

申请日：2005-06-13

申请人： Tae-youn Heor ,  Bong-gi Kim ,  Seong-su Park

发明人： Tae-youn Heor ,  Bong-gi Kim ,  Seong-su Park

IPC分类号： G11B5/09 ,  G11B7/00 ,  G11B7/09 ,  G11B7/135

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

摘要： An optical pickup apparatus and method for recording and/or reproducing information onto and/or from optical discs having diverse specifications. Particularly, a diffraction grating for use in the optical pickup apparatus includes a substrate for refracting an output beam from a laser diode at a predetermined refractive index, a liquid crystal for refracting the beam, which is transmitted through the substrate, at a different refractive index and direction according to a track pitch of the optical disc, an electrode material for supplying power to the liquid crystal, and a switch for controlling power supply to the electrode material. Electrode materials are aligned with various spacing in order to change the refractive index of the liquid crystal according to the wavelength of a laser and the specification of an optical disc used. Also, power supply to the electrode materials is controlled depending on the optical disc specification.

摘要翻译： 一种用于在具有不同规格的光盘上和/或从其上记录和/或再现信息的光学拾取装置和方法。 特别地，用于光学拾取装置的衍射光栅包括用于以预定折射率折射来自激光二极管的输出光束的衬底，用于折射透射通过衬底的光束的液晶以不同的折射率 和根据光盘的轨道间距的方向，用于向液晶供电的电极材料和用于控制对电极材料的电力供给的开关。 为了根据激光的波长和使用的光盘的规格来改变液晶的折射率，电极材料以各种间隔对准。 此外，根据光盘规格来控制对电极材料的供电。

公开(公告)号：US20060158997A1

公开(公告)日：2006-07-20

申请号：US11254698

申请日：2005-10-21

申请人： Bong-gi Kim ,  Soo-han Park ,  Seong-su Park

发明人： Bong-gi Kim ,  Soo-han Park ,  Seong-su Park

IPC分类号： G11B7/00

CPC分类号： G11B7/0903 ,  G02B5/1819 ,  G02B5/1866 ,  G02B27/4238 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： A diffraction element for an optical pick-up apparatus is capable of being used with discs that have different track pitches. The diffraction element includes a first region and a second region, each being constituted by a diffracting grating with a predetermined period. The first region and the second region have a predetermined height difference Δx.

摘要翻译： 用于光学拾取装置的衍射元件能够与具有不同轨道间距的盘一起使用。 衍射元件包括第一区域和第二区域，每个由具有预定周期的衍射光栅构成。 第一区域和第二区域具有预定的高度差异Deltax。

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。