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141 条记录 (耗时 0.033 秒)

    Method for correcting aberration due to optical disk tilt and apparatus therefor
    1.
    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

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

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

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

    CPC分类号： G11B7/1365 ,  G11B7/0956

    摘要： 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.

    摘要翻译： 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。

    Focus error detection with two symmetrically splitted reflected beams
    3.
    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

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

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

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

    CPC分类号： G11B7/131 ,  G11B7/0908 ,  G11B7/0917 ,  G11B7/0943

    摘要： 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.

    摘要翻译： 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。

    Semiconductor laser and flying optical pickup for recording/reproducing using the same
    8.
    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

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

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

    IPC分类号： B41J2700

    CPC分类号： B82Y10/00 ,  G11B7/122

    摘要： 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.

    摘要翻译： 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。

    Optical pickup for correcting an astigmatic difference of light
    9.
    发明授权
    Optical pickup for correcting an astigmatic difference of light 失效
    用于校正光散射差异的光学拾取器

    公开(公告)号：US5872760A

    公开(公告)日：1999-02-16

    申请号：US865141

    申请日：1997-05-29

    申请人： Tae-kyoung Kim ,  Pyong-yong Seong ,  Chul-woo Lee

    发明人： Tae-kyoung Kim ,  Pyong-yong Seong ,  Chul-woo Lee

    IPC分类号： G02B27/09 ,  G11B7/125 ,  G11B7/135 ,  G11B7/00

    CPC分类号： G11B7/1376 ,  G11B7/1398

    摘要： An optical pickup for correcting an astigmatic difference of a light by using a collimating lens arranged at an angle with respect to the thickness direction of an active layer of a light source and parallel to the width direction of the active layer, for collimating the light emitted from the light source, is provided. The collimating lens is arranged between an edge emitting laser diode having an active layer and a beam splitter, and corrects the astigmatic difference of the light emitted from the edge emitting laser diode. Therefore, a compact optical pickup can be achieved since additional optical elements for correcting the astigmatic difference of the laser beam are not required.

    摘要翻译： 一种光学拾取器，用于通过使用相对于光源的有源层的厚度方向成一定角度并平行于有源层的宽度方向布置的准直透镜来校正光的散光差异，用于准直发光的光 从光源提供。 准直透镜布置在具有有源层的边缘发射激光二极管和分束器之间，并且校正从边缘发射激光二极管发射的光的像散差。 因此，不需要用于校正激光束的像散差的附加光学元件，因此可以实现紧凑的光学拾取器。

    Optical pickup having an objective lens compatible with a plurality of optical disk formats
    10.
    发明授权
    Optical pickup having an objective lens compatible with a plurality of optical disk formats 有权
    具有与多个光盘格式兼容的物镜的光学拾取器

    公开(公告)号：US06198714B1

    公开(公告)日：2001-03-06

    申请号：US09505155

    申请日：2000-02-15

    申请人： Jang-hoon Yoo ,  Chong-sam Chung ,  Chul-woo Lee ,  Kun-ho Cho

    发明人： Jang-hoon Yoo ,  Chong-sam Chung ,  Chul-woo Lee ,  Kun-ho Cho

    IPC分类号： G11B700

    CPC分类号： G11B7/1353 ,  G11B7/126 ,  G11B7/127 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： An optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source, an objective lens having a function of focusing light emitted from the light source into the optimal light spot on an information recording surface of one of the plurality of the optical recording media, and a light detector to detect light transmitted through the objective lens after being reflected from the information recording surface of the optical recording medium on which the light spot is formed. The objective lens has an inner area, an annular lens area and an outer area such that the annular lens area divides the inner area from the outer area and has a ring shape centered at a vertex. The inner area, the annular lens area and the outer area have aspherical surface shapes to focus light transmitted through the inner area and the outer area into a single light spot by which information can be read from the information recording surface of a relatively thin first optical recording medium and scatter light transmitted through the annular lens area located between the inner area and the outer area so that information cannot be read from the information recording surface of the first optical recording medium, during reproduction of the first optical recording medium. The inner area and the annular lens area transmit light into a single light spot by which information can be read from the information recording surface of a relatively thick second optical recording medium and scatters light transmitted through the outer lens area so that information cannot be read from the information recording surface of the second optical recording medium, during reproduction of the second optical recording medium.

    摘要翻译： 一种与多个使用不同波长的光的多个光学记录介质兼容的光学拾取器。 光拾取器包括至少一个光源，具有将从光源发射的光聚焦到多个光学记录介质之一的信息记录表面上的最佳光点中的功能的物镜，以及光检测器 在从形成有光斑的光记录介质的信息记录面反射后，检测透过物镜的光。 物镜具有内部区域，环形透镜区域和外部区域，使得环形透镜区域将内部区域与外部区域分开并且具有以顶点为中心的环形。 内部区域，环形透镜区域和外部区域具有非球面形状，以将透过内部区域和外部区域的光聚焦成单个光点，通过该单个光点可以从相对薄的第一光学信息记录表面读取信息 记录介质和透射通过位于内部区域和外部区域之间的环形透镜区域的散射光，使得在第一光学记录介质的再现期间不能从第一光学记录介质的信息记录表面读取信息。 内部区域和环形透镜区域将光透射到单个光点中，通过该单个光点可以从相对较厚的第二光学记录介质的信息记录表面读取信息，并散射透过外部透镜区域的光，从而不能从 在第二光学记录介质的再现期间，第二光学记录介质的信息记录表面。