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。

公开(公告)号：US07426172B2

公开(公告)日：2008-09-16

申请号：US10834998

申请日：2004-04-30

申请人： Bong-gi Kim ,  Soo-han Park ,  Hyo-chan Lee ,  Jong-uk Kim

发明人： Bong-gi Kim ,  Soo-han Park ,  Hyo-chan Lee ,  Jong-uk Kim

IPC分类号： G11B7/135 ,  G11B7/09

CPC分类号： G11B7/1353 ,  G11B7/0909 ,  G11B7/123 ,  G11B7/1263 ,  G11B7/127 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1359 ,  G11B7/1398 ,  G11B2007/0006

摘要： An optical pickup includes an optical module that detects an information signal and/or an error signal by radiating light to a recording medium and receives light reflected by the recording medium. The optical module includes a light source; an optical path changer that changes a path of light emitted from the light source; a main photodetector that receives light that is reflected off a recording medium back to the optical module to detect an information signal and/or an error signal; and a hologram element that generates an astigmatism of the light incident onto the optical module. Since most optical elements of the optical pickup except an objective lens are packaged in the optical module, the entire structure of the optical pickup can be simplified and the number of bonding points for fixing the optical elements of the optical pickup on a base can be reduced.

摘要翻译： 光学拾取器包括光学模块，其通过向记录介质照射光并接收由记录介质反射的光来检测信息信号和/或误差信号。 光学模块包括光源; 光路改变器，其改变从光源发射的光的路径; 主光电检测器，其将从记录介质反射的光返回到光模块以检测信息信号和/或误差信号; 以及产生入射到光学模块上的光的散光的全息元件。 由于除了物镜之外的光学拾取器的大多数光学元件被封装在光学模块中，所以可以简化光学拾取器的整体结构，并且可以减少用于将光学拾取器的光学元件固定在基座上的接合点的数量 。

公开(公告)号：US20060209647A1

公开(公告)日：2006-09-21

申请号：US10565195

申请日：2003-10-17

申请人： Soo-han Park ,  Jong-uk Kim

发明人： Soo-han Park ,  Jong-uk Kim

IPC分类号： G11B7/00

CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/0909 ,  G11B7/0943 ,  G11B7/123 ,  G11B7/1275 ,  G11B2007/0006

摘要： A photodetector detecting reflected light components from an optical medium, the photodetector including a first detector divided into eight sections detecting the reflected light components and converting the light components into electrical signals, a first calculating portion calculating a first tracking error signal from the electrical signals by a differential push-pull method, a second calculating portion calculating a first focusing error signal by an astigmatism method and calculating a second tracking error signal by a differential phase detection method from the electrical signals converted by the first detector; a second detector divided into four sections detecting the reflected light components reflected by the optical recording medium to convert the light components into electrical signals; and a third calculating portion calculating a second focusing error signal by the astigmatism method and calculating a third tracking error signal by the differential phase detection method from the electrical signals converted by the second detector.

摘要翻译： 一种检测来自光学介质的反射光分量的光检测器，该光检测器包括：第一检测器，被分为检测反射光分量的八个部分，并将光分量转换为电信号;第一计算部分，根据电信号计算第一跟踪误差信号， 差分推挽方法，第二计算部分，通过像散方法计算第一聚焦误差信号，并通过差分相位检测方法从由第一检测器转换的电信号计算第二跟踪误差信号; 第二检测器，被分为检测由光记录介质反射的反射光分量的四个部分，以将光分量转换成电信号; 以及第三计算部分，通过像散法计算第二聚焦误差信号，并通过差分相位检测方法从由第二检测器转换的电信号计算第三跟踪误差信号。

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：US08159908B2

公开(公告)日：2012-04-17

申请号：US10565195

申请日：2003-10-17

申请人： Soo-han Park ,  Jong-uk Kim

发明人： Soo-han Park ,  Jong-uk Kim

IPC分类号： G11B7/095

CPC分类号： G11B7/131 ,  G11B7/0903 ,  G11B7/0906 ,  G11B7/0909 ,  G11B7/0943 ,  G11B7/123 ,  G11B7/1275 ,  G11B2007/0006

摘要： A photodetector detecting reflected light components from an optical medium, the photodetector including a first detector divided into eight sections detecting the reflected light components and converting the light components into electrical signals, a first calculating portion calculating a first tracking error signal from the electrical signals by a differential push-pull method, a second calculating portion calculating a first focusing error signal by an astigmatism method and calculating a second tracking error signal by a differential phase detection method from the electrical signals converted by the first detector; a second detector divided into four sections detecting the reflected light components reflected by the optical recording medium to convert the light components into electrical signals; and a third calculating portion calculating a second focusing error signal by the astigmatism method and calculating a third tracking error signal by the differential phase detection method from the electrical signals converted by the second detector.

摘要翻译： 一种检测来自光学介质的反射光分量的光检测器，该光检测器包括：第一检测器，被分为检测反射光分量的八个部分，并将光分量转换为电信号;第一计算部分，根据电信号计算第一跟踪误差信号， 差分推挽方法，第二计算部分，通过像散方法计算第一聚焦误差信号，并通过差分相位检测方法从由第一检测器转换的电信号计算第二跟踪误差信号; 第二检测器，被分为检测由光记录介质反射的反射光分量的四个部分，以将光分量转换成电信号; 以及第三计算部分，通过像散法计算第二聚焦误差信号，并通过差分相位检测方法从由第二检测器转换的电信号计算第三跟踪误差信号。

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：US07619951B2

公开(公告)日：2009-11-17

申请号：US11315195

申请日：2005-12-23

申请人： Seok-jung Kim ,  Hyung-hoon Kang ,  Jung-gug Pae ,  Young-man Ahn ,  Soo-han Park

发明人： Seok-jung Kim ,  Hyung-hoon Kang ,  Jung-gug Pae ,  Young-man Ahn ,  Soo-han Park

IPC分类号： G11B7/00 ,  G11B17/00

CPC分类号： G11B7/0956 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0935

摘要： An optical pickup actuator, including a lens holder movably installed on a base, and mounted with an objective lens to transmit an incident light to an optical information recording medium, and a magnetic circuit to independently drive the lens holder in a focusing direction, a tilting direction and a tracking direction, respectively.

摘要翻译： 一种光拾取器致动器，包括可移动地安装在基座上并且安装有物镜以将入射光透射到光学信息记录介质的透镜保持器，以及用于在聚焦方向独立地驱动透镜保持器的磁路，倾斜 方向和跟踪方向。

公开(公告)号：US07180838B2

公开(公告)日：2007-02-20

申请号：US10389933

申请日：2003-03-18

申请人： Young-sun Park ,  Bong-gi Kim ,  Soo-han Park

发明人： Young-sun Park ,  Bong-gi Kim ,  Soo-han Park

IPC分类号： G11B7/135

CPC分类号： G11B7/1275 ,  G11B7/0903 ,  G11B7/123 ,  G11B7/131 ,  G11B7/1353 ,  G11B2007/0006

摘要： An optical pickup apparatus includes a light source module which emits a light beam, a beam splitter which reflects or transmits the light beam emitted from the light source module, an objective lens which focuses the light beam passing through the beam splitter onto a disc, and a photodetector which receives and detects the light beam reflected by the disc, wherein the light source module includes a first light source and a second light source that emit first and second light beams having different wavelengths and are formed into a single module. The optical pickup apparatus further includes a first grating which divides the first light beam emitted from the first light source into three beams of the first light beam and transmits the second light beam emitted from the second light source, and a second grating which transmits the first light beam emitted from the first light source and divides the second light beam emitted from the second light source into three beams of the second light beam. Since the first and second light sources are formed into a single light source module, the number of parts of the optical pickup apparatus can be reduced, and the efficiency of light is improved.

摘要翻译： 光拾取装置包括发射光束的光源模块，反射或透射从光源模块发射的光束的分束器，将通过分束器的光束聚焦在盘上的物镜，以及 接收并检测由盘反射的光束的光电检测器，其中光源模块包括第一光源和发射具有不同波长的第一和第二光束并形成为单个模块的第二光源。 光学拾取装置还包括第一光栅，其将从第一光源发射的第一光束分成三束第一光束并透射从第二光源发射的第二光束;以及第二光栅， 从第一光源发射的光束并将从第二光源发射的第二光束分成三束第二光束。 由于第一和第二光源被形成为单个光源模块，所以可以减少光学拾取装置的部件数量，并提高光的效率。

公开(公告)号：US07145859B2

公开(公告)日：2006-12-05

申请号：US10244605

申请日：2002-09-17

申请人： Soo-han Park ,  Young-sun Park ,  Moon-lwhan Lee ,  Do-hoan Nam ,  Chun-seong Park

发明人： Soo-han Park ,  Young-sun Park ,  Moon-lwhan Lee ,  Do-hoan Nam ,  Chun-seong Park

IPC分类号： G11B7/135

CPC分类号： G11B7/127 ,  G11B7/08 ,  G11B7/0956 ,  G11B7/1353 ,  G11B7/1381 ,  G11B7/13922 ,  G11B7/22 ,  G11B2007/0006

摘要： An optical pickup includes a light source which emits first and second lights having different wavelengths for a first recording medium and a second recording medium having a relatively large thickness, respectively, an optical path changer which alters a traveling path of incident light, and an objective lens which focuses the first and second lights on the recording medium. While the light source emits the first light, a photodetector is adjusted to be aligned with the optical axis for the first recording medium. The light source and/or a sensing lens are adjusted in the direction of the optical axis, and the tilt of the objective lens is adjusted. Next, while the light source is operated to emit the second light, the light source is adjusted in a rotating direction. As such, an optical axis alignment is completed for the first and second recording media.

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。