公开(公告)号：US07420895B2

公开(公告)日：2008-09-02

申请号：US10746147

申请日：2003-12-29

申请人： Eun-goo Kim ,  Chun-gi Kim ,  Kyoung-hwan Park ,  Ji-hwan Lim

发明人： Eun-goo Kim ,  Chun-gi Kim ,  Kyoung-hwan Park ,  Ji-hwan Lim

IPC分类号： G11B7/00

CPC分类号： G11B7/0903

摘要： A method and apparatus for detecting a signal to determine on-track/off-track and/or a track cross direction, using a detection signal corresponding to a reflected main light beam and detection signals respectively corresponding to reflected first and second sub light beams, and an optical recording and/or reproducing apparatus using the same are provided. When detection signals respectively corresponding to one side portions, in a direction corresponding to a radial direction of the optical information storage medium, of the respective main light beam and first and second sub light beams are referred to as a first main signal, a first sub signal, and a second sub signal, respectively, the method and apparatus include obtaining a first operational signal, which is used to determine on-track/off-track and/or a track cross direction, by performing a subtraction on the combination of the first and second sub signals, and the first main signal.

摘要翻译： 一种用于使用与反射的主光束相对应的检测信号和分别对应于反射的第一和第二子光束的检测信号来检测信号以确定轨道上/离开轨道和/或轨道横向的方法和装置， 并提供使用其的光学记录和/或再现装置。 当分别对应于相应于主光束和第一和第二子光束的与光学信息存储介质的半径方向相对应的一个侧面的检测信号被称为第一主信号时，第一子信号 信号和第二子信号，所述方法和装置包括获得用于确定轨道/离轨和/或轨道横向的第一操作信号，通过对 第一和第二子信号，以及第一主信号。

公开(公告)号：US07403458B2

公开(公告)日：2008-07-22

申请号：US10766328

申请日：2004-01-29

申请人： Ji-hwan Lim ,  Ju-hyung Lee ,  Pyong-yong Seong ,  Eun-goo Kim ,  Chun-gi Kim ,  Kyoung-hwan Park

发明人： Ji-hwan Lim ,  Ju-hyung Lee ,  Pyong-yong Seong ,  Eun-goo Kim ,  Chun-gi Kim ,  Kyoung-hwan Park

IPC分类号： G11B7/00

CPC分类号： G11B7/1263 ,  G11B7/123 ,  G11B7/1275 ,  G11B2007/0006

摘要： A compatible optical pickup, including first and second light sources for emitting lights with different wavelengths and first and second photodetectors for detecting an information signal and/or an error signal, and a method of detecting the amount of output light using the compatible optical pickup. The first and second photodetectors monitor the amount of light output from the second and first light sources respectively such that no extra front photodetectors are required. Thus, the number of optical component parts included in the optical pickup can be reduced, thereby lowering the manufacturing costs for the optical pickup. Also, there is no need to secure a space in a base where a front photodetector is to be installed, so the base is simplified. Thus, inferior moldings are reduced, and the durability of a mold can be prolonged.

摘要翻译： 一种兼容的光学拾取器，包括用于发射具有不同波长的光的第一和第二光源以及用于检测信息信号和/或误差信号的第一和第二光电检测器，以及使用兼容光学拾取器检测输出光量的方法。 第一和第二光电检测器分别监测从第二和第一光源输出的光量，使得不需要额外的前光检测器。 因此，可以减少包括在光学拾取器中的光学部件的数量，从而降低光学拾取器的制造成本。 此外，不需要固定要安装前光电检测器的基座中的空间，因此基座被简化。 因此，较差的模制品减少，并且可以延长模具的耐久性。

公开(公告)号：US07251209B2

公开(公告)日：2007-07-31

申请号：US10424821

申请日：2003-04-29

申请人： Yong-jun Cho ,  Pyong-yong Seong ,  Seung-man Han ,  Hyun-seob Choi ,  Eun-goo Kim ,  Jong-koog Lee ,  Kun-soo Kim ,  Chun-gi Kim

发明人： Yong-jun Cho ,  Pyong-yong Seong ,  Seung-man Han ,  Hyun-seob Choi ,  Eun-goo Kim ,  Jong-koog Lee ,  Kun-soo Kim ,  Chun-gi Kim

IPC分类号： G11B7/135

CPC分类号： G11B7/1263 ,  G11B7/1275 ,  G11B7/1395 ,  G11B2007/0006

摘要： An optical pickup for a recording medium includes a light source, an objective lens, a main photodetector, and a front photodetector. The configuration of the optical pickup enables converging or diverging of light to be incident on a plate beam splitter so that light can be received at an effective light receiving region of a front photodetector without interference due to internal reflection occurring in the plate beam splitter. In the alternative, a wedge beam splitter in the optical pickup includes first and second mirror planes at a predetermined angle to transmit and reflect incident light at a predetermined ratio. In the optical pickup, an amount of light that is exactly proportional to an output power of the light source can be detected, where the output power of the light source can be accurately controlled, thereby improving a linearity of the output power of the light source.

摘要翻译： 用于记录介质的光学拾取器包括光源，物镜，主光电检测器和前光电检测器。 光拾取器的配置使得入射到平板光束分离器上的光会聚或发散，使得可以在前光电检测器的有效光接收区域处接收光，而不会由于在板分光器中发生内反射而受到干扰。 或者，光学拾取器中的楔形光束分离器包括预定角度的第一和第二反射镜平面，以预定比例透射和反射入射光。 在光学拾取器中，可以检测与光源的输出功率正好成正比的光量，其中可以精确地控制光源的输出功率，从而提高光源的输出功率的线性 。

公开(公告)号：US5739608A

公开(公告)日：1998-04-14

申请号：US780213

申请日：1997-01-08

申请人： Eun-goo Kim

发明人： Eun-goo Kim

IPC分类号： G11B7/085 ,  G11B7/09 ,  G11B7/135 ,  G11B7/22 ,  H02K7/09 ,  H02K41/035

CPC分类号： H02K7/09 ,  G11B7/093 ,  G11B7/0932 ,  H02K41/0354 ,  G11B7/22 ,  H02K2201/18

摘要： An actuator for an optical pickup includes a first permanent magnet for supporting an objective lens. A focusing coil is wound around the circumference of the first permanent magnet for providing a driving force for vertical movement of the first permanent magnet. A plurality of tracking coils are placed at predetermined portions of the circumference of the first permanent magnet and provide a driving force for lateral movement of the first permanent magnet. A second permanent magnet is installed around the first permanent magnet and is separated from the first permanent magnet by a predetermined distance, for levitating the first permanent magnet which has the objective lens and the focusing and tracking coils disposed thereon, by interacting with the first permanent magnet. Therefore, the objective lens is supported by a magnetic levitation method and the disadvantages of a complicated bobbin assembly and difficulties in manufacturing and assembling the actuator can be avoided, further increasing the manufacturing productivity of the actuator.

摘要翻译： 用于光学拾取器的致动器包括用于支撑物镜的第一永磁体。 聚焦线圈围绕第一永磁体的圆周缠绕，以提供用于第一永磁体的垂直运动的驱动力。 多个跟踪线圈被放置在第一永磁体的圆周的预定部分处，并且提供用于第一永磁体的横向移动的驱动力。 第二永磁体安装在第一永磁体周围并与第一永久磁铁隔开预定距离，用于使具有物镜的第一永磁体和设置在其上的聚焦跟踪线圈悬浮在第一永久磁铁上，与第一永久磁铁相互作用 磁铁。 因此，通过磁悬浮方式支撑物镜，可以避免复杂的筒管组件的缺点，制造和组装致动器的困难，进一步提高了致动器的制造生产率。

公开(公告)号：US08750087B2

公开(公告)日：2014-06-10

申请号：US12858565

申请日：2010-08-18

申请人： Ki-bok Kim ,  Eun-goo Kim ,  Hyun-wook Nam ,  Jung-bae Oh ,  Ji-sun Ahn

发明人： Ki-bok Kim ,  Eun-goo Kim ,  Hyun-wook Nam ,  Jung-bae Oh ,  Ji-sun Ahn

IPC分类号： G11B7/135

CPC分类号： G11B7/1376 ,  G11B2007/0006

摘要： An optical pickup device corresponding to a plurality of media is provided. The optical pickup device includes a light emitting system and a light receiving system including a plurality of light sources and a light transmission system shared by the light emitting system and the light receiving system, configured to irradiate light on a medium, and receive light reflected from the medium. The light transmission system irradiates light from the light emitting system to be appropriately focused on the medium, receives light reflected from the medium, and transports light to the light receiving system. The light transmission system includes one beam splitter corresponding to the light emitting system and the light receiving system and a position-changing collimating lens shared to correspond to a plurality of media. The position-changing collimating lens is disposed between the beam splitter and the medium, the position being controlled according to optical characteristics of the media.

摘要翻译： 提供对应于多个介质的光学拾取装置。 光拾取装置包括发光系统和包括多个光源的光接收系统和由发光系统和光接收系统共享的光传输系统，其被配置为将光照射在介质上，并且接收从 介质。 光传输系统将来自发光系统的光照射到适当地聚焦在介质上，接收从介质反射的光，并将光传输到光接收系统。 光传输系统包括对应于发光系统和光接收系统的一个分束器和对应于多个介质共享的位置改变准直透镜。 位置改变准直透镜设置在分束器和介质之间，该位置根据介质的光学特性进行控制。

公开(公告)号：US06552974B1

公开(公告)日：2003-04-22

申请号：US09537099

申请日：2000-03-29

申请人： Eun-goo Kim

发明人： Eun-goo Kim

IPC分类号： G11B700

CPC分类号： G11B7/1353 ,  G11B7/0909 ,  G11B7/126 ,  G11B7/131 ,  G11B7/1376 ,  G11B7/1395 ,  G11B2007/0006

摘要： An optical pickup compatible between a digital video disc read only memory (DVD-ROM) and a compact disc rewritable (CD-RW), which is a member of the CD family media. The compatible optical pickup includes: a first light source for emitting a first light having a predetermined wavelength; a second light source for emitting a second light having a long wavelength relative to the first light; an optical path changing unit for changing the traveling path of an incident light; an objective lens for condensing the first and second lights onto optical discs having different thicknesses, respectively; and a main photodetector for detecting an information signal and error signals from the first and second lights which have been reflected by the optical discs and passed through the optical path changing unit. The optical path changing unit includes a planar first beam splitter disposed on the optical path between the first light source and the objective lens, for changing the traveling path of the first light from the first light source, and a planar second beam splitter disposed on the optical path between the first beam splitter and the objective lens, for changing the optical paths of the first and second lights. The main photodetector comprises a first photodetector having four divided regions, a second photodetector having two divided regions, and a third photodetector having two divided regions, the second and third photodetectors being disposed at both sides of the first photodetector.

摘要翻译： 在CD系列介质的成员之间的数字视频盘只读存储器（DVD-ROM）和可重写光盘（CD-RW）之间兼容的光学拾取器。 兼容光学拾取器包括：用于发射具有预定波长的第一光的第一光源; 用于发射相对于第一光具有长波长的第二光的第二光源; 用于改变入射光的行进路径的光路改变单元; 用于将第一和第二光分别聚光到具有不同厚度的光盘上的物镜; 以及主光检测器，用于检测已被光盘反射并通过光路改变单元的来自第一和第二光的信息信号和误差信号。 光路改变单元包括：布置在第一光源和物镜之间的光路上的平面第一分束器，用于改变来自第一光源的第一光的行进路径;以及平面第二分束器， 第一分束器和物镜之间的光路，用于改变第一和第二光的光路。 主光电检测器包括具有四个分割区域的第一光电检测器，具有两个分割区域的第二光电检测器和具有两个分割区域的第三光电检测器，第二和第三光电检测器设置在第一光电检测器的两侧。