中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

59 records (took 0.026 seconds)

    Focus error detection with two symmetrically splitted reflected beams
    1.
    发明授权
    Focus error detection with two symmetrically splitted reflected beams 失效
    使用两个对称分裂的反射光束进行聚焦误差检测

    公开(公告)号：US5594714A

    公开(公告)日：1997-01-14

    申请号：US366255

    申请日：1994-12-29

    Applicant: Chul-woo Lee ,  Kyung-hwa Rim ,  Pyong-yong Seong ,  Chong-sam Chung

    Inventor： Chul-woo Lee ,  Kyung-hwa Rim ,  Pyong-yong Seong ,  Chong-sam Chung

    IPC: G11B7/13 ,  G11B7/09 ,  G11B7/135 ,  G11B7/00

    CPC classification number: G11B7/131 ,  G11B7/0908 ,  G11B7/0917 ,  G11B7/0943

    Abstract: In an optical pickup, a focus error detector for detecting a focus error of an objective lens for an optical disk includes a focusing lens for focusing the reflected light of the optical disk, a diffraction optical device for diffracting the reflected light focused by the focusing lens into two light rays, two bi-segmented photo-detectors for receiving the two split light rays, respectively, and a circuit for outputting a desired focus error signal from the signal detected from the photo-detectors. The circuit outputs a pure focus error signal without errors created by the deviation of the light amount in the photo-detectors due to the tilt or shift of the reflected light, thereby contributing to the stable operation and miniaturization of the optical pickup.

    Abstract translation: 在光拾取器中，用于检测光盘的物镜的聚焦误差的聚焦误差检测器包括：用于聚焦光盘的反射光的聚焦透镜;用于衍射由聚焦透镜聚焦的反射光的衍射光学装置 分别用于接收两个分开的光线的两个双段光电检测器和用于从从光电检测器检测的信号中输出所需的聚焦误差信号的电路。 由于反射光的倾斜或偏移，电路输出纯聚焦误差信号，而不会由于光检测器中光量的偏差而产生误差，从而有助于光拾取器的稳定操作和小型化。

    Method for correcting aberration due to optical disk tilt and apparatus therefor
    6.
    发明授权
    Method for correcting aberration due to optical disk tilt and apparatus therefor 失效
    用于校正由于光盘倾斜引起的像差的方法及其装置

    公开(公告)号：US5699340A

    公开(公告)日：1997-12-16

    申请号：US585253

    申请日：1995-12-26

    Applicant: Chul-woo Lee ,  Kyung-hwa Rhim ,  Pyong-yong Seong ,  Chong-sam Chung

    Inventor： Chul-woo Lee ,  Kyung-hwa Rhim ,  Pyong-yong Seong ,  Chong-sam Chung

    IPC: G11B7/08 ,  G11B7/095 ,  G11B7/135

    CPC classification number: G11B7/1365 ,  G11B7/0956

    Abstract: In a method and an apparatus for correcting aberration due to optical disk tilt, the apparatus includes a correction plate through which a first light beam passes by an object lens in an optical disk, a light source and a photo detector for generating and receiving a second light beam to detect the magnitude of the optical disk tilt, respectively, and an actuator for inclining the correction plate based on the detected signal. The correction plate has the same optical properties as those of the substrate of the optical disk, irrespective of the optical pick surroundings and offset the aberration due to the optical disk tilt. Therefore, while the best performance of the optical pickup is ensured, adverse effects caused by the aberration due to the optical disk tilt can be eliminated through simple circuitry.

    Abstract translation: 在用于校正由于光盘倾斜引起的像差的方法和装置中，该装置包括：校正板，第一光束通过光盘中的物镜，光源和光电检测器，用于产生和接收第二光 光束分别检测光盘倾斜的大小，以及用于基于检测到的信号倾斜校正板的致动器。 校正板具有与光盘基板相同的光学特性，而与光拾取环境无关，并且偏移了由于光盘倾斜引起的像差。 因此，虽然确保了光学拾取器的最佳性能，但是可以通过简单的电路消除由于光盘倾斜引起的像差引起的不利影响。

    Compatible optical pickup and optical recording and/or reproducing apparatus employing the same
    8.
    发明申请
    Compatible optical pickup and optical recording and/or reproducing apparatus employing the same 失效
    兼容的光学拾取器和采用该光学拾取器的光学记录和/或再现装置

    公开(公告)号：US20050018560A1

    公开(公告)日：2005-01-27

    申请号：US10897015

    申请日：2004-07-23

    Applicant: Ui-yol Kim ,  Tae-kyung Kim ,  Chong-sam Chung ,  Pyong-yong Seong

    Inventor： Ui-yol Kim ,  Tae-kyung Kim ,  Chong-sam Chung ,  Pyong-yong Seong

    IPC: G11B7/00 ,  G11B7/125 ,  G11B7/135

    CPC classification number: G11B7/1353 ,  G11B7/1275 ,  G11B7/1374 ,  G11B2007/0006

    Abstract: A compatible optical pickup including an optical unit and a focusing unit. The optical unit emits a short wavelength light for high-density recording media and a long wavelength light for low-density recording media, directs the short and long wavelength light to a recording medium, receives lights reflected by the recording medium, and detects an information reproduction signal and/or an error signal from the received lights. The focusing unit focuses light received from the optical unit to form a light spot on a recording surface of the recording medium, diffracts the short wavelength light into a zero order light and the long wavelength light into a second order light to be used as effective light for recording and/or reproduction. Thus, a high-density recording medium and a low-density recording medium having different thicknesses can be compatibly used.

    Abstract translation: 一种兼容的光学拾取器，包括光学单元和聚焦单元。 光学单元发射用于高密度记录介质的短波长光和用于低密度记录介质的长波长光，将短波长和长波长光引导到记录介质，接收由记录介质反射的光，并检测信息 再现信号和/或来自接收到的光的误差信号。 聚焦单元将从光学单元接收的光聚焦在记录介质的记录表面上形成光点，将短波长的光衍射成零级光，将长波长的光衍射成二阶光，作为有效光 用于记录和/或再现。 因此，可以兼容使用具有不同厚度的高密度记录介质和低密度记录介质。

    Compatible optical pickup and optical recording and/or reproducing apparatus employing the same
    9.
    发明授权
    Compatible optical pickup and optical recording and/or reproducing apparatus employing the same 失效
    兼容的光学拾取器和采用该光学拾取器的光学记录和/或再现装置

    公开(公告)号：US08493831B2

    公开(公告)日：2013-07-23

    申请号：US10897015

    申请日：2004-07-23

    Applicant: Ui-yol Kim ,  Tae-kyung Kim ,  Chong-sam Chung ,  Pyong-yong Seong

    Inventor： Ui-yol Kim ,  Tae-kyung Kim ,  Chong-sam Chung ,  Pyong-yong Seong

    IPC: G11B7/00

    CPC classification number: G11B7/1353 ,  G11B7/1275 ,  G11B7/1374 ,  G11B2007/0006

    Abstract: A compatible optical pickup including an optical unit and a focusing unit. The optical unit emits a short wavelength light for high-density recording media and a long wavelength light for low-density recording media, directs the short and long wavelength light to a recording medium, receives lights reflected by the recording medium, and detects an information reproduction signal and/or an error signal from the received lights. The focusing unit focuses light received from the optical unit to form a light spot on a recording surface of the recording medium, diffracts the short wavelength light into a zero order light and the long wavelength light into a second order light to be used as effective light for recording and/or reproduction. Thus, a high-density recording medium and a low-density recording medium having different thicknesses can be compatibly used.

    Abstract translation: 一种兼容的光学拾取器，包括光学单元和聚焦单元。 光学单元发射用于高密度记录介质的短波长光和用于低密度记录介质的长波长光，将短波长和长波长光引导到记录介质，接收由记录介质反射的光，并检测信息 再现信号和/或来自接收到的光的误差信号。 聚焦单元将从光学单元接收的光聚焦在记录介质的记录表面上形成光点，将短波长的光衍射成零级光，将长波长的光衍射成二阶光，作为有效光 用于记录和/或再现。 因此，可以兼容使用具有不同厚度的高密度记录介质和低密度记录介质。

    Semiconductor laser and flying optical pickup for recording/reproducing using the same
    10.
    发明授权
    Semiconductor laser and flying optical pickup for recording/reproducing using the same 失效
    半导体激光器和飞行光学拾取器，用于使用其进行记录/再现

    公开(公告)号：US06480222B1

    公开(公告)日：2002-11-12

    申请号：US08445509

    申请日：1995-05-22

    Applicant: Chul-woo Lee ,  Jang-hoon Yoo ,  Pyong-yong Seong

    Inventor： Chul-woo Lee ,  Jang-hoon Yoo ,  Pyong-yong Seong

    IPC: B41J2700

    CPC classification number: B82Y10/00 ,  G11B7/122

    Abstract: A semiconductor laser for generating a laser beam and an optical pickup for recording/reproducing information using the semiconductor laser as an optical source are provided. The semiconductor laser includes an aperture member on an emitting end thereof to perform high-density memory recording/reproducing through the reduction of an optical spot. The aperture has a hole whose diameter is smaller than the width of the active region of the semiconductor laser, to thereby restrictively emit the laser beam via the hole so that the optical spot formed on an optical disk is reduced. Thus, high-density memory recording/reproducing, which is useful for miniaturized information processors, can be realized.

    Abstract translation: 提供了一种用于产生激光束的半导体激光器和用于使用半导体激光器作为光源来记录/再现信息的光学拾取器。 半导体激光器包括在其发射端上的孔径构件，以通过减少光点来执行高密度存储器记录/再现。 孔具有直径小于半导体激光器的有源区的宽度的孔，从而通过孔限制性地发射激光束，使得形成在光盘上的光点减小。 因此，可以实现对小型化信息处理器有用的高密度存储器记录/再现。

Patent Agency Ranking