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    Optical pickup using objective lens compatible with a plurality of optical disks
    1.
    发明授权
    Optical pickup using objective lens compatible with a plurality of optical disks 有权
    使用与多个光盘兼容的物镜的光学拾取器

    公开(公告)号：US06285646B1

    公开(公告)日：2001-09-04

    申请号：US09198451

    申请日：1998-11-24

    申请人： Jang-Hoon Yoo ,  Yong-Jae Lee ,  Pyong-Yong Seong ,  Chul-Woo Lee

    发明人： Jang-Hoon Yoo ,  Yong-Jae Lee ,  Pyong-Yong Seong ,  Chul-Woo Lee

    IPC分类号： G11B700

    CPC分类号： G11B7/1374 ,  G11B2007/0006

    摘要： An optical pickup device including an objective lens which is compatible with a plurality of optical disks of respectively different specifications, such as a digital versatile disk (DVD), a compact disk-recordable (CD-R) medium, a compact disk (CD) and a laser disk (LD). The optical pickup device includes a laser source to emit light, an objective lens to focus the light emitted from the laser source on respective information recording surfaces of a plurality of optical recording media as an optimal optical spot, and an optical detector to detect light reflected from the information recording surface of the optical recording medium on which the optical spot has been focused and transmitted through the objective lens. The objective lens includes a first lens area, a second lens area, and a third lens area to focus the light emitted from the laser source. The first lens area has an aspherical surface corresponding to a first optical recording medium and a second optical recording medium, the second lens area has an aspherical surface corresponding to the second optical recording medium, and the third lens area has an aspherical surface corresponding to the first optical recording medium. As a result, the optical pickup can be compatible with a plurality of the optical disks of a respectively different specification irrespective of the thickness of the disk.

    摘要翻译： 一种光学拾取装置，包括与分别不同规格的多个光盘兼容的物镜，诸如数字通用盘（DVD），可压缩盘可记录（CD-R）介质，光盘（CD） 和激光盘（LD）。 光拾取装置包括用于发光的激光源，将从激光源发射的光聚焦到作为最佳光点的多个光记录介质的各个信息记录表面上的物镜，以及检测反射光的光检测器 从其上已经聚焦并透过物镜的光记录介质的信息记录表面。 物镜包括第一透镜区域，第二透镜区域和用于聚焦从激光源发射的光的第三透镜区域。 第一透镜区域具有对应于第一光学记录介质和第二光学记录介质的非球面，第二透镜区域具有对应于第二光学记录介质的非球面，并且第三透镜区域具有对应于第二光学记录介质的非球面 第一光记录介质。 结果，光拾取器可以与分别不同规格的多个光盘兼容，而与盘的厚度无关。

    Compatible optical pickup
    2.
    发明授权
    Compatible optical pickup 有权
    兼容光学拾音器

    公开(公告)号：US06337841B1

    公开(公告)日：2002-01-08

    申请号：US09425887

    申请日：1999-10-25

    申请人： Kun-Soo Kim ,  Jong-Ryull Kim ,  Myoung-Soo Choi ,  Hyung-Taek Oh ,  Jong-Hwa Yu ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong ,  Jang-Hoon Yoo

    发明人： Kun-Soo Kim ,  Jong-Ryull Kim ,  Myoung-Soo Choi ,  Hyung-Taek Oh ,  Jong-Hwa Yu ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong ,  Jang-Hoon Yoo

    IPC分类号： G11B700

    CPC分类号： G02B5/1876 ,  G11B7/1353 ,  G11B7/1367 ,  G11B7/1374 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： A compatible optical pickup capable of recording or reproducing information on or from compact disc (CD) family media such as CD rewritable (CD-RW) and digital versatile disc (DVD) by adopting a stepped planar lens having a plurality of gratings. The compatible optical pickup includes a first optical source for emitting a first light beam having a predetermined wavelength; a second optical source for emitting a second light beam having a long wavelength relative to the first light beam; an optical path changing element for changing the traveling path of an incident light beam; an objective lens for condensing the first and second light beams onto optical discs having different thicknesses, respectively; an optical diffraction element having a first region which directly transmits the first and second light beams incident thereto, and a second region bounding the first region, which directly transmits the incident first light beam and diffractingly transmits the second light beam toward an optical axis; and a photodetector for detecting an information signal and an error signal from the first and second light beam which have been reflected by the optical discs and passed through the optical path changing element. Also, the optical diffraction element is a stepped planar lens in which one or more stepped pattern periods each having a plurality of annular gratings are arranged in the second region, wherein the depths of the gratings become smaller moving away from the optical axis, and the maximum depth thereof is a predetermined value.

    摘要翻译： 一种兼容的光学拾取器，其能够通过采用具有多个光栅的阶梯式平面透镜来记录或再现诸如CD可重写（CD-RW）和数字通用光盘（DVD）的光盘（CD）族介质上的信息。 兼容光学拾取器包括用于发射具有预定波长的第一光束的第一光源; 用于发射相对于第一光束具有长波长的第二光束的第二光源; 用于改变入射光束的行进路径的光路改变元件; 用于将第一和第二光束分别聚光到具有不同厚度的光盘上的物镜; 光学衍射元件，其具有直接透射入射到其上的第一和第二光束的第一区域和限定第一区域的第二区域，该第二区域直接透射入射的第一光束并将第二光束衍射地朝向光轴传播; 以及光检测器，用于检测已被光盘反射并通过光路改变元件的来自第一和第二光束的信息信号和误差信号。 此外，光学衍射元件是阶梯式平面透镜，其中在第二区域中布置有具有多个环形光栅的一个或多个阶梯图案周期，其中光栅的深度变得较小，远离光轴移动，并且 其最大深度是预定值。

    Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure
    4.
    发明授权
    Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure 有权
    通过采用具有阶梯式衍射光栅结构的平板透镜，与可读写光盘兼容的数字通用光盘的光学记录和拾取头

    公开(公告)号：US06449237B1

    公开(公告)日：2002-09-10

    申请号：US09425673

    申请日：1999-10-22

    申请人： Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

    发明人： Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

    IPC分类号： G11B700

    CPC分类号： G11B7/1353 ,  G02B5/1876 ,  G11B7/1275 ,  G11B7/1378 ,  G11B7/13922 ,  G11B2007/0006

    摘要： An optical recording and pickup head having a flat plate lens of a staircase type diffraction grating structure is compatible with a DVD and a CD-RW. The optical recording and pickup head includes a first optical source for emitting first light having a relatively short wavelength, a second optical source for emitting second light having a relatively long wavelength, a photo detector, an objective lens for focusing the light emitted from the first and second optical sources on the information recording surfaces of the optical discs, respectively, an optical path altering unit for transferring the light emitted from the first and second optical sources to the objective lens and transferring the first and second light reflected from the information recording surfaces of the plurality of discs to the photo detector, respectively, and a flat plate lens for substantially totally transmitting the first light proceeding from the optical path altering unit to the objective lens and diffracting the second light proceeding from the optical path altering unit to the optical axis of the objective lens.

    摘要翻译： 具有楼梯型衍射光栅结构的平板透镜的光学记录和拾取头与DVD和CD-RW兼容。 光学记录和拾取头包括用于发射具有相对较短波长的第一光的第一光源，用于发射具有较长波长的第二光的第二光源，光检测器，用于将从第一光发射的光聚焦的物镜 和第二光源分别设置在光盘的信息记录表面上，光路改变单元，用于将从第一和第二光源发射的光转移到物镜，并传送从信息记录表面反射的第一和第二光 以及平板透镜，用于将从光路改变单元前进的第一光基本上全部透射到物镜，并将从光路改变单元行进的第二光衍射到光学检测器 物镜的轴线。

    Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure
    5.
    发明申请
    Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure 失效
    通过采用具有阶梯式衍射光栅结构的平板透镜，与可读写光盘兼容的数字通用光盘的光学记录和拾取头

    公开(公告)号：US20050018584A1

    公开(公告)日：2005-01-27

    申请号：US10869096

    申请日：2004-06-17

    申请人： Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

    发明人： Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

    IPC分类号： G02B5/18 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

    CPC分类号： G11B7/1353 ,  G02B5/1876 ,  G11B7/127 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： An optical recording and pickup head having a flat plate lens of a staircase type diffraction grating structure is compatible with a DVD and a CD-RW. The optical recording and pickup head includes a first optical source for emitting first light having a relatively short wavelength, a second optical source for emitting second light having a relatively long wavelength, a photo detector, an objective lens for focusing the light emitted from the first and second optical sources on the information recording surfaces of the optical discs, respectively, an optical path altering unit for transferring the light emitted from the first and second optical sources to the objective lens and transferring the first and second light reflected from the information recording surfaces of the plurality of discs to the photo detector, respectively, and a flat plate lens for substantially totally transmitting the first light proceeding from the optical path altering unit to the objective lens and diffracting the second light proceeding from the optical path altering unit to the optical axis of the objective lens.

    摘要翻译： 具有楼梯型衍射光栅结构的平板透镜的光学记录和拾取头与DVD和CD-RW兼容。 光学记录和拾取头包括用于发射具有较短波长的第一光的第一光源，用于发射具有较长波长的第二光的第二光源，光检测器，用于将从第一光发射的光聚焦的物镜 和第二光源分别设置在光盘的信息记录表面上，光路改变单元，用于将从第一和第二光源发射的光转移到物镜，并传送从信息记录表面反射的第一和第二光 以及平板透镜，用于将从光路改变单元前进的第一光基本上全部透射到物镜，并将从光路改变单元行进的第二光衍射到光学检测器 物镜的轴线。

    Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure
    6.
    发明授权
    Optical recording and pickup head for digital versatile disc compatible with read-writable compact disc by adopting flat plate lens having staircase type diffraction grating structure 有权
    通过采用具有阶梯式衍射光栅结构的平板透镜，与可读写光盘兼容的数字通用光盘的光学记录和拾取头

    公开(公告)号：US06765857B2

    公开(公告)日：2004-07-20

    申请号：US10178528

    申请日：2002-06-25

    申请人： Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

    发明人： Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

    IPC分类号： G11B700

    CPC分类号： G11B7/1353 ,  G02B5/1876 ,  G11B7/127 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： An optical recording and pickup head having a flat plate lens of a staircase type diffraction grating structure is compatible with a DVD and a CD-RW. The optical recording and pickup head includes a first optical source for emitting first light having a relatively short wavelength, a second optical source for emitting second light having a relatively long wavelength, a photo detector, an objective lens for focusing the light emitted from the first and second optical sources on the information recording surfaces of the optical discs, respectively, an optical path altering unit for transferring the light emitted from the first and second optical sources to the objective lens and transferring the first and second light reflected from the information recording surfaces of the plurality of discs to the photo detector, respectively, and a flat plate lens for substantially totally transmitting the first light proceeding from the optical path altering unit to the objective lens and diffracting the second light proceeding from the optical path altering unit to the optical axis of the objective lens.

    摘要翻译： 具有楼梯型衍射光栅结构的平板透镜的光学记录和拾取头与DVD和CD-RW兼容。 光学记录和拾取头包括用于发射具有较短波长的第一光的第一光源，用于发射具有较长波长的第二光的第二光源，光检测器，用于将从第一光发射的光聚焦的物镜 和第二光源分别在光盘的信息记录表面上，光路改变单元，用于将从第一和第二光源发射的光转移到物镜，并传送从信息记录表面反射的第一和第二光 以及平板透镜，用于将从光路改变单元前进的第一光基本上全部透射到物镜，并将从光路改变单元行进的第二光衍射到光学检测器 物镜的轴线。

    Optical pickup using laser light of different wavelengths to record and reproduce information to/from a disk
    8.
    发明授权
    Optical pickup using laser light of different wavelengths to record and reproduce information to/from a disk 失效
    使用不同波长的激光的光学拾取器从/向盘记录和再现信息

    公开(公告)号：US06567366B2

    公开(公告)日：2003-05-20

    申请号：US09144639

    申请日：1998-08-31

    申请人： Tae-Kyung Kim ,  Pyong-Yong Seong ,  Chul-Woo Lee

    发明人： Tae-Kyung Kim ,  Pyong-Yong Seong ,  Chul-Woo Lee

    IPC分类号： G11B700

    CPC分类号： G11B7/1356

    摘要： An optical pickup records information on a recordable and reproducible disk and reads information therefrom. The optical pickup includes a laser light source for emitting first laser light in case of a reproduction mode for reproducing information from the disk and emitting second laser light in case of a recording mode for recording information on the disk. A collimating lens collimates the laser light emitted from the laser light source. A chromatic aberration corrector includes prisms of respectively different material properties, for beam-shaping and dispersing the laser light collimated by the collimating lens so that chromatic aberration of an optical spot formed on the disk is corrected in which the chromatic aberration is generated by a difference between the wavelengths of the first and second laser lights. The beam-shaped and dispersed first and second laser lights are focused on the disk by an objective lens.

    摘要翻译： 光学拾取器记录关于可记录和可重现的盘的信息并从中读取信息。 光拾取器包括用于在用于从盘再现信息的再现模式中发射第一激光的激光光源，并且在用于在盘上记录信息的记录模式的情况下发射第二激光。 准直透镜准直激光源发出的激光。 色差校正器包括分别具有不同材料特性的棱镜，用于对由准直透镜准直的激光进行光束整形和分散，从而校正在光盘上形成的光点的色差，其中通过差产生色差 在第一和第二激光的波长之间。 束状分散的第一和第二激光通过物镜聚焦在盘上。

    Optical system for shaping light beams and an optical pickup employing the same
    9.
    发明授权
    Optical system for shaping light beams and an optical pickup employing the same 失效
    用于使光束成形的光学系统和采用该光学系统的光学拾取器

    公开(公告)号：US6088170A

    公开(公告)日：2000-07-11

    申请号：US14625

    申请日：1998-01-28

    申请人： Chul-Woo Lee ,  Pyong-Yong Seong ,  Tae-Kyung Kim

    发明人： Chul-Woo Lee ,  Pyong-Yong Seong ,  Tae-Kyung Kim

    IPC分类号： G02B27/09 ,  G11B7/135 ,  H01S3/00 ,  H01S5/00 ,  H01S5/022 ,  G02B13/18 ,  G11B7/00

    CPC分类号： G02B19/0085 ,  G02B19/0014 ,  G02B19/0052 ,  G02B27/09 ,  G02B27/0966 ,  G11B7/1365 ,  G11B7/1372 ,  G11B7/1398 ,  H01S5/005

    摘要： A beam-shaping optical system includes a light source, a plurality of plates, and a cylindrical lens disposed between the light source and the plurality of plates, wherein the plurality of plates and the cylindrical lens have an optical feature in which the light output from the light source is beam-shaped to have a desired shape in the cross-section of the light beam. An optical pickup using the beam-shaped light which is diverged by the optical system can obtain convergence light reflected from an optical storage medium. Since the convergence light transmitted through only one plate has astigmatism as it is, a separate lens is not used for light detection and uses a photo detector adapted for employing an astigmatic method, to perform a focussing servo.

    摘要翻译： 光束整形光学系统包括光源，多个板和设置在光源和多个板之间的柱面透镜，其中多个板和柱面透镜具有光学特征，其中从 光源在光束的横截面中具有波束形状以具有期望的形状。 使用由光学系统分散的束状光的光学拾取器可以获得从光学存储介质反射的会聚光。 由于仅通过一个板透射的会聚光像散像一样，所以不使用单独的透镜来进行光检测，并且使用适于采用散光法的光检测器来执行聚焦伺服。

    Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens
    10.
    再颁专利
    Optical pickup compatible with a digital versatile disk and a recordable compact disk using a holographic ring lens 有权
    光拾取器兼容数字通用光盘和使用全息环形透镜的可刻录光盘

    公开(公告)号：USRE43106E1

    公开(公告)日：2012-01-17

    申请号：US11849609

    申请日：2007-09-04

    申请人： Jang-Hoon Yoo ,  Chul-Woo Lee

    发明人： Jang-Hoon Yoo ,  Chul-Woo Lee

    IPC分类号： G11B7/00

    CPC分类号： G11B7/1353 ,  G02B5/32 ,  G11B7/1275 ,  G11B7/1372 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

    摘要： An optical pickup apparatus compatible with at least two types of optical recording media, using light beams having respective different wavelengths for recording and reading information, the optical pickup apparatus including two laser light sources to emit light beams having the different wavelengths, a holographic lens including a holographic ring to transmit the light beams incident in an inner region of the holographic ring, and to diffract a specific light beam among the light beams emitted from the laser light sources incident in an outer region relative to the inner region, an objective lens to focus the light beams passed through the holographic ring lens on the respective information recording surfaces of the two types of the optical recording media, optical elements to alter optical paths of the light beams reflected from the information recording surfaces of the optical recording media to corresponding photodetectors.

    摘要翻译： 一种与至少两种类型的光学记录介质兼容的光学拾取装置，使用具有各自不同波长的光束来记录和读取信息，所述光学拾取装置包括两个激光源，以发射具有不同波长的光束;全息透镜，包括 用于透射入射在全息环的内部区域中的光束的全息环，并且从入射在相对于内部区域的外部区域的激光光源发射的光束中衍射特定光束，将物镜衍射到 将通过全息环透镜的光束聚焦在两种类型的光学记录介质，光学元件的相应信息记录表面上，以将从光学记录介质的信息记录表面反射的光束的光路改变为相应的光电检测器 。