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51. 发明申请

US20060083145A1 Compatible optical pickup using light sources following a common optical path 有权
公开(公告)号：US20060083145A1
公开(公告)日：2006-04-20
申请号：US11295594
申请日：2005-12-07
申请人： Jang-hoon Yoo , Chul-woo Lee , Jong-ryull Kim
发明人： Jang-hoon Yoo , Chul-woo Lee , Jong-ryull Kim
IPC分类号： G11B7/00
CPC分类号： G11B7/127 , G11B7/123 , G11B7/1353 , G11B7/1372 , G11B2007/0006
摘要： An optical pickup compatible with recording media having different formats, the optical pickup includes a light device module having a first light beam source and a second light beam source to emit corresponding first and second light beams having different wavelengths, a hologram light coupler to separately guide the first and second light beams along the same optical path such that the first and second light beams go toward a corresponding one of the recording media, an optical path changing element to selectively alter the optical path of an incident light beam, and an objective lens disposed on an optical path between said optical path changing element the corresponding one of the recording media to focus the first and second light beam on the corresponding one of the recording media, and a photodetector to receive the first and second light beam incident from said optical path changing element.

52. 发明授权

US06882614B2 Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses 失效
标题翻译：具有光学拾取装置的记录/再现装置用于从不同厚度的盘读取信息并将信息记录到盘上
公开(公告)号：US06882614B2
公开(公告)日：2005-04-19
申请号：US09789522
申请日：2001-02-22
申请人： Chul-woo Lee , Jang-hoon Yoo
发明人： Chul-woo Lee , Jang-hoon Yoo
IPC分类号： G11B7/00 , G11B7/135 , G11B7/09
CPC分类号： G11B7/1374 , G11B7/1353 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： A recording/reproducing apparatus having an optical pickup device which is efficient in light use having little spherical aberration. The recording and/or reproducing apparatus includes an optical pickup having an objective lens, disposed opposite a disk, having a light passing region divided into central, intermediate and periphery regions corresponding to a near axis area, an intermediate axis area and a far axis area of incident light, where the curvature of the central and peripheral regions is optimized for a thin disk and that of the intermediate region is optimized for a thick disk, a light source irradiating light toward a disk through the objective lens; a photo detector for detecting light reflected from the disk, and a beam splitter, disposed between the objective lens and the light source, for transmitting light from the light source toward the objective lens and for diffracting light reflected from the disks toward the photo detector; and a processing unit to process an information signal to control the incident light generated by the light source, and to process the detected light from the photodetector. Therefore, the optical pickup device can be used for both compact disks (CDs) that are thick using light beam passing the near and intermediate regions of said objective lens, and digital video disks (DVDs) that are thin using light beam passing the near and far axis regions of said objective lens, and detect signals without picking up noise regardless of the thickness of the disk.
摘要翻译：一种具有光学拾取装置的记录/再现装置，其具有很少的球面像差的光利用效率。记录和/或再现装置包括具有与光盘相对设置的物镜的光学拾取器，具有被分成对应于近轴区域的中心，中间和周边区域的光通过区域，中间轴区域和远轴区域入射光的中心区域和外围区域的曲率优化为薄盘，中间区域的曲率针对厚盘优化，光源通过物镜向盘照射光; 用于检测从光盘反射的光的光检测器和设置在物镜和光源之间的光束分离器，用于将光从光源向物镜透射，并将从光盘反射的光衍射到光检测器; 以及处理单元，处理信息信号以控制由光源产生的入射光，并处理来自光电检测器的检测光。因此，光拾取装置可以用于使用通过所述物镜的近中和中间区域的光束而使用厚度的光盘（CD），以及使用经过近距离的光束的薄的数字视频盘（DVD）所述物镜的远轴区域，无论盘的厚度如何，都可以检测信号而不拾取噪声。

53. 发明授权

US06480222B1 Semiconductor laser and flying optical pickup for recording/reproducing using the same 失效
标题翻译：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。

54. 发明授权

US06212154B1 Optical pickup for optical disk and light source for optical pickup 失效
标题翻译：用于光盘的光学拾取器和用于光学拾取器的光源
公开(公告)号：US06212154B1
公开(公告)日：2001-04-03
申请号：US09095126
申请日：1998-06-10
申请人： Jang-hoon Yoo , Chul-woo Lee
发明人： Jang-hoon Yoo , Chul-woo Lee
IPC分类号： G11B700
CPC分类号： G11B7/1381 , G11B7/13922 , G11B2007/13727
摘要： An optical pickup using a light-emitting diode (LED), which is capable of forming a light spot of an appropriate size for high-density recording/reproduction. The optical pickup includes a light-emitting diode (LED) to generate and emit light; a condensing unit to condense the light emitted from the LED; an optical filter to selectively transmit a predetermined wavelength of the light emitted from the LED; a spatial filter having a pin-hole, to limit a transmission range of the light condensed by the condensing unit; and a collimating lens to condense the divergent light passed through the spatial filter to form a parallel light. The parallel light is directed by a beam splitter toward an objective lens which focuses the parallel light on an optical disk. The light reflected from the optical disk is received by a photodetector.
摘要翻译：一种使用发光二极管（LED）的光学拾取器，其能够形成用于高密度记录/再现的适当尺寸的光点。光拾取器包括用于产生和发光的发光二极管（LED）; 冷凝单元，用于冷凝从LED发出的光; 光学滤波器，用于选择性地发射从LED发射的光的预定波长; 具有针孔的空间滤波器，以限制由所述冷凝单元聚光的光的透射范围; 以及准直透镜，用于冷凝通过空间滤光器的发散光以形成平行光。平行光由分束器引向物镜，将平行光聚焦在光盘上。从光盘反射的光被光检测器接收。

55. 发明授权

US6147955A Optical pickup device to read from and record information to disks of different thicknesses 有权
标题翻译：光学拾取装置从不同厚度的磁盘读取和记录信息
公开(公告)号：US6147955A
公开(公告)日：2000-11-14
申请号：US291031
申请日：1999-04-14
申请人： Chul-woo Lee , Jang-hoon Yoo
发明人： Chul-woo Lee , Jang-hoon Yoo
IPC分类号： G02B7/00 , G02B3/08 , G02B3/10 , G02B13/00 , G02B13/18 , G11B7/00 , G11B7/08 , G11B7/135
CPC分类号： G11B7/1367 , G11B7/1374 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup device which is efficient in light use having little spherical aberration. The optical pickup device of an optical pickup includes an objective lens, disposed opposite a disk, having a light passing region divided into central, intermediate and periphery regions corresponding to a near axis area, an intermediate axis area and a far axis area of incident light, where the curvature of the central and peripheral regions is optimized for a thin disk and that of the intermediate region is optimized for a thick disk; a light source irradiating light toward a disk through the objective lens; a photo detector for detecting light reflected from the disk; and a beam splitter, disposed between the objective lens and the light source, for transmitting light from the light source toward the objective lens and for diffracting light reflected from the disks toward the photo detector. Therefore, the optical pickup device can be used for both compact disks (CDs) that are thick using light beam passing the near and intermediate regions of said objective lens, and digital video disks (DVDS) that are thin using light beam passing the near and far axis regions of said objective lens, and detect signals without picking up noise regardless of the thickness of the disk.
摘要翻译：一种光学拾取装置，其具有很小的球面像差。光学拾取器的光学拾取装置包括物镜，该物镜与盘相对设置，具有被分成对应于近轴区域的中心，中间和周边区域的光通过区域，入射光的中轴线区域和远轴区域其中中央和外围区域的曲率针对薄盘进行了优化，中间区域的曲率针对厚盘进行了优化; 通过物镜向光盘照射光的光源; 用于检测从盘反射的光的光电检测器; 以及设置在物镜和光源之间的分束器，用于将光从光源向物镜透射，并将从光盘反射的光衍射到光检测器。因此，光拾取装置可以用于使用通过所述物镜的近中和中间区域的光束而使用厚度的光盘（CD），以及使用光束通过近端和/或远端的光束的数字视频盘（DVDS）所述物镜的远轴区域，无论盘的厚度如何，都可以检测信号而不拾取噪声。

56. 发明授权

US08503272B2 Recording/reproducing apparatus having an optical pickup device to read from and record information to disks of different thicknesses 失效
公开(公告)号：US08503272B2
公开(公告)日：2013-08-06
申请号：US10225177
申请日：2002-08-22
申请人： Chul-woo Lee , Jang-hoon Yoo
发明人： Chul-woo Lee , Jang-hoon Yoo
IPC分类号： G11B15/02
CPC分类号： G11B7/1374 , G11B7/1353 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： A recording/reproducing apparatus having an optical pickup device which is efficient in light use having little spherical aberration. The recording and/or reproducing apparatus includes an optical pickup having an objective lens, disposed opposite a disk, having a light passing region divided into central, intermediate and periphery regions corresponding to a near axis area, an intermediate axis area and a far axis area of incident light, where the curvature of the central and peripheral regions is optimized for a thin disk and that of the intermediate region is optimized for a thick disk, a light source irradiating light toward a disk through the objective lens; a photo detector for detecting light reflected from the disk, and a beam splitter, disposed between the objective lens and the light source, for transmitting light from the light source toward the objective lens and for diffracting light reflected from the disks toward the photo detector; and a processing unit to process an information signal to control the incident light generated by the light source, and to process the detected light from the photodetector. Therefore, the optical pickup device can be used for both compact disks (CDs) that are thick using light beam passing the near and intermediate regions of said objective lens, and digital video disks (DVDs) that are thin using light beam passing the near and far axis regions of said objective lens, and detect signals without picking up noise regardless of the thickness of the disk.

57. 发明授权

US5793407A Method and apparatus for forming a light spot smaller than a theoretical limit for high density recording 失效
标题翻译：用于形成小于高密度记录的理论极限的光点的方法和装置
公开(公告)号：US5793407A
公开(公告)日：1998-08-11
申请号：US507914
申请日：1995-07-27
申请人： Tae-seok Park , Chul-woo Lee , Jang-hoon Yoo
发明人： Tae-seok Park , Chul-woo Lee , Jang-hoon Yoo
IPC分类号： G11B7/00 , G02B27/58 , G11B7/0045 , G11B7/12 , G11B7/125 , G11B7/135 , B41J2/47
CPC分类号： B82Y10/00 , G02B27/58 , G11B7/122 , G11B7/1367 , G11B7/1381 , G11B7/1387 , G11B2007/13727
摘要： A high density recording method for performing high density recording by reducing a light spot size in an optical pickup for recording information by scanning an optical disk with the light spot, spatially controlling the phase or the intensity of light being focused within the optical focal length of an objective lens by employing a diffraction optical element so as to form on the optical disk a light spot whose diameter is reduced according to the width of the portion for controlling the phase or intensity of the light. The distribution of the optical intensity is variable depending on the distance between the diffraction optical element and the optical disk, to thereby enable theoretically forming a limitlessly small light spot, and actually, greatly increase the recording capacity. The diffraction optical element can be used as a floating slider in an optical pickup having a swing arm.
摘要翻译：一种高密度记录方法，用于通过用光斑扫描光盘来减少用于记录信息的光学拾取器中的光点尺寸来进行高密度记录，空间地控制聚焦在光焦度的光焦度内的光的相位或强度通过采用衍射光学元件在物镜上形成直径根据用于控制光的相位或强度的部分的宽度而减小的光斑的物镜。光强度的分布根据衍射光学元件和光盘之间的距离而变化，从而能够在理论上形成无限小的光斑，实际上大大提高了记录容量。衍射光学元件可以用作具有摆臂的光学拾取器中的浮动滑块。

58. 发明授权

US06466529B1 Optical pickup assembly and method of detecting tilt 失效
标题翻译：光拾取组件和倾斜检测方法
公开(公告)号：US06466529B1
公开(公告)日：2002-10-15
申请号：US09680463
申请日：2000-10-06
申请人： Seok-jung Kim , Yong-hoon Lee , Tae-kyung Kim , Jang-hoon Yoo
发明人： Seok-jung Kim , Yong-hoon Lee , Tae-kyung Kim , Jang-hoon Yoo
IPC分类号： G11B700
CPC分类号： G11B7/0935 , G11B7/0933 , G11B7/0956
摘要： An optical pickup assembly having an elastically supported tilt mechanism. The optical pickup assembly includes a bobbin at which an objective lens is mounted and an elastic support member which supports the bobbin in elastic motion with respect to a holder installed at a base. A focus coil and a tracking coil are installed at the bobbin and form a conducting path for driving the objective lens in a focusing direction and a tracking direction. Tilt coils are installed at one side of the bobbin and form a conductive path for driving tilt of the objective lens. A first magnet and a first yoke generate an electromagnetic force to driving the objective lens together with the current carrying focus coil and tracking coil. A second magnet and a second yoke generate an electromagnetic force to driving the objective lens together with the current carrying tilt coils. A position detecting sensor measures relative inclination of the objective lens with respect to a disk, and a balance member coupled to the bobbin to balance the weight of the tilt coils by applying weight corresponding to the weight of the tilt coils at positions symmetrically opposite to the positions of the tilt coils.
摘要翻译：一种具有弹性支撑的倾斜机构的光学拾取器组件。光拾取器组件包括安装物镜的筒管和相对于安装在基座上的保持器弹性运动地支撑筒管的弹性支撑构件。聚焦线圈和跟踪线圈安装在线轴上并形成用于沿聚焦方向和跟踪方向驱动物镜的导电路径。倾斜线圈安装在线轴的一侧，形成用于驱动物镜倾斜的导电路径。第一磁体和第一磁轭一起产生电磁力以与载流聚焦线圈和跟踪线圈一起驱动物镜。第二磁体和第二磁轭产生电磁力以与载流倾斜线圈一起驱动物镜。位置检测传感器测量物镜相对于盘的相对倾斜度，以及平衡构件，其耦合到筒管，以通过将对应于倾斜线圈的重量的重量施加在倾斜线圈的重量上来平衡倾斜线圈的重量，倾斜线圈的位置。

59. 发明申请

US20060274631A1 Optical recording/reproducing apparatus 有权
标题翻译：光记录/重放装置
公开(公告)号：US20060274631A1
公开(公告)日：2006-12-07
申请号：US11430847
申请日：2006-05-10
申请人： Jang-hoon Yoo , Hag-hyun Jang , Soo-han Park , Soo-jin Jeong , Tae-youn Heor , Bong-gi Kim
发明人： Jang-hoon Yoo , Hag-hyun Jang , Soo-han Park , Soo-jin Jeong , Tae-youn Heor , Bong-gi Kim
IPC分类号： G11B7/135
CPC分类号： G11B7/1275 , G11B7/1353 , G11B2007/0006
摘要： An optical recording/reproducing apparatus featuring stable information signal detection ability and reduced number of components. The optical recording/reproducing apparatus includes: a plurality of light sources emitting lights with different wavelengths for use in recording/reproducing information onto/from various types of optical recording media of different recording densities, in which at least two lights emitted from the light sources have polarization components orthogonal to each other; an objective lens for focusing a light from each of the light sources to a corresponding optical recording medium; a collimating lens disposed between the light sources and the objective lens for collimating lights from the light sources; a hologram element installed between the collimating lens and the objective lens for refracting a light emitted from one of the light sources, in which the light to be refracted is selected by wavelength and polarization components; and a photodetector receiving a light that is reflected from the corresponding optical recording medium after being focused by the objective lens.
摘要翻译：一种具有稳定的信息信号检测能力和数量减少的光记录/再现装置。光记录/重放装置包括：多个光源，发射不同波长的光，用于在各种不同记录密度的光学记录介质上记录/再现信息，其中从光源发出的至少两个光具有彼此正交的极化分量; 用于将来自每个光源的光聚焦到相应的光学记录介质的物镜; 设置在光源和物镜之间的准直透镜，用于准直来自光源的光; 安置在准直透镜和物镜之间的全息元件，用于折射从其中一个光源发射的光，其中通过波长和偏振分量选择待折射的光; 以及光接收器，其在被物镜聚焦之后接收从对应的光记录介质反射的光。

60. 发明申请

US20060164708A1 Optical pick-up device 有权
标题翻译：光学拾取装置
公开(公告)号：US20060164708A1
公开(公告)日：2006-07-27
申请号：US11332243
申请日：2006-01-17
申请人： Soo-han Park , Jang-hoon Yoo , Hang-hyeon Jang , Yong-han Yoon , Soo-jin Jung
发明人： Soo-han Park , Jang-hoon Yoo , Hang-hyeon Jang , Yong-han Yoon , Soo-jin Jung
IPC分类号： G02B26/08
CPC分类号： G11B7/1275 , G11B7/1353 , G11B7/1376 , G11B7/1378 , G11B7/13922 , G11B7/13925 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： An optical pickup device according to an embodiment of the present invention comprises a light source for projecting a beam of light to record and reproduce information with respect to an optical recording medium. A collimating lens is disposed on a path of the light to converge and convert the light into a parallel beam. An object lens condenses the parallel beam from the collimating lens and projects the parallel beam onto the optical recording medium. An optical element is disposed between the collimating lens and the object lens. A first actuator moves the collimating lens along the optical axis to thereby control a distance between the collimating lens and the optical element. A first controller drives the first actuator to find a position for the collimating lens, for reducing aberration generated in the light being projected to the optical recording medium. Accordingly, the aberration can be effectively prevented, thereby improving recording and reproducing performance of the optical pickup device.
摘要翻译：根据本发明的实施例的光学拾取装置包括用于投射光束以记录和再现关于光学记录介质的信息的光源。准直透镜设置在光的路径上以会聚并将光转换成平行光束。物镜将来自准直透镜的平行光束会聚并将平行光束投影到光记录介质上。光学元件设置在准直透镜和物镜之间。第一致动器沿着光轴移动准直透镜，从而控制准直透镜和光学元件之间的距离。第一控制器驱动第一致动器以找到用于准直透镜的位置，用于减少投射到光记录介质的光中产生的像差。因此，可以有效地防止像差，从而提高光拾取装置的记录和再现性能。

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