公开(公告)号：US07782734B2

公开(公告)日：2010-08-24

申请号：US11329069

申请日：2006-01-11

Applicant: Bong-Gi Kim ,  Soo-Han Park ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Ho-Sik You

Inventor： Bong-Gi Kim ,  Soo-Han Park ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Ho-Sik You

IPC: G11B7/00

CPC classification number: G11B7/1275 ,  G11B7/1353 ,  G11B7/1376 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006

Abstract: An optical pickup which is compatible with different types of media is disclosed. A plurality of light sources emit light with different wavelengths. Light path changers change the path of light emitted by the plurality of light sources so that the light is incident upon an objective lens. The objective lens focuses the incident light onto a recording medium. A collimating lens is disposed in front of the objective lens to collimate the incident lights. The collimating lens is movable to correct a spherical aberration. A diffractive optical element is disposed in a path of a light with a short wavelength and has a diffractive surface to correct a chromatic aberration.

Abstract translation: 公开了与不同类型的介质兼容的光学拾取器。 多个光源发射具有不同波长的光。 光路改变器改变由多个光源发射的光的路径，使得光入射到物镜上。 物镜将入射光聚焦到记录介质上。 准直透镜设置在物镜前面以准直入射光。 准直透镜可移动以校正球面像差。 衍射光学元件设置在具有短波长的光的路径中并且具有衍射面以校正色差。

公开(公告)号：US07435934B2

公开(公告)日：2008-10-14

申请号：US11329119

申请日：2006-01-11

Applicant: Soo-Han Park ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Ho-Sik You

Inventor： Soo-Han Park ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Ho-Sik You

IPC: G11B7/00

CPC classification number: G11B7/1376 ,  G11B7/1263 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/13925 ,  G11B2007/0006

Abstract: An optical pickup apparatus includes a first objective lens having a low numerical aperture (NA) suitable for a low density recording medium, a second objective lens having a high NA suitable for a high density recording medium, a first light source that emits short wavelength light which is focused onto an optical recording medium by the first and second objective lenses, a first photodetector that receives a returning reflected light from the optical recording medium, and a first optical path converter for selectively guiding part of the light emitted from the first light source towards the first or the second objective lens, and guiding the reflected light towards the first photodetector.

Abstract translation: 一种光学拾取装置包括具有适用于低密度记录介质的低数值孔径（NA）的第一物镜，具有适用于高密度记录介质的高NA的第二物镜，发射短波长光的第一光源 其通过第一和第二物镜聚焦到光学记录介质上，第一光电检测器，其接收来自光学记录介质的返回反射光;以及第一光路转换器，用于选择性地引导从第一光源发射的光的一部分 朝向第一或第二物镜，并且将反射光引向第一光电检测器。

公开(公告)号：US20060164953A1

公开(公告)日：2006-07-27

申请号：US11329069

申请日：2006-01-11

Applicant: Bong-Gi Kim ,  Soo-Han Park ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Ho-Sik You

Inventor： Bong-Gi Kim ,  Soo-Han Park ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Ho-Sik You

IPC: G11B7/00

CPC classification number: G11B7/1275 ,  G11B7/1353 ,  G11B7/1376 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006

Abstract: An optical pickup which is compatible with different types of media is disclosed. A plurality of light sources emit light with different wavelengths. Light path changers change the path of light emitted by the plurality of light sources so that the light is incident upon an objective lens. The objective lens focuses the incident light onto a recording medium. A collimating lens is disposed in front of the objective lens to collimate the incident lights. The collimating lens is movable to correct a spherical aberration. A diffractive optical element is disposed in a path of a light with a short wavelength and has a diffractive surface to correct a chromatic aberration.

Abstract translation: 公开了与不同类型的介质兼容的光学拾取器。 多个光源发射具有不同波长的光。 光路改变器改变由多个光源发射的光的路径，使得光入射到物镜上。 物镜将入射光聚焦到记录介质上。 准直透镜设置在物镜前面以准直入射光。 准直透镜可移动以校正球面像差。 衍射光学元件设置在具有短波长的光的路径中并且具有衍射面以校正色差。

公开(公告)号：US20060176789A1

公开(公告)日：2006-08-10

申请号：US11331317

申请日：2006-01-13

Applicant: Jong-Uk Kim ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Young-Sun Jeon ,  Hyung-Jin Kim

Inventor： Jong-Uk Kim ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Young-Sun Jeon ,  Hyung-Jin Kim

IPC: G11B5/09

CPC classification number: G11B20/10 ,  G11B2007/0006 ,  G11B2020/10879

Abstract: A data line switching circuit of an optical pickup device is disclosed. In order to drive multiple formats of optical disks, the data line switching circuit applies data signals of a corresponding format to the optical pickup device through a common connector by connecting data lines of the corresponding format to the common connector according to control signals from a control unit, thereby minimizing the number of terminals of the connector to obtain a miniaturized optical pickup device.

Abstract translation: 公开了一种光拾取装置的数据线切换电路。 为了驱动多种格式的光盘，数据线切换电路根据来自控制器的控制信号，将相应格式的数据线连接到公共连接器，通过公共连接器将相应格式的数据信号应用于光学拾取装置 从而最小化连接器的端子数以获得小型化的光学拾取装置。

公开(公告)号：US20060163459A1

公开(公告)日：2006-07-27

申请号：US11329119

申请日：2006-01-11

Applicant: Soo-Han Park ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Ho-Sik You

Inventor： Soo-Han Park ,  Jang-Hoon Yoo ,  Hag-Hyeon Jang ,  Ho-Sik You

IPC: G01D5/34

CPC classification number: G11B7/1376 ,  G11B7/1263 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/13925 ,  G11B2007/0006

Abstract: An optical pickup apparatus includes a first objective lens having a low numerical aperture (NA) suitable for a low density recording medium, a second objective lens having a high NA suitable for a high density recording medium, a first light source that emits short wavelength light which is focused onto an optical recording medium by the first and second objective lenses, a first photodetector that receives a returning reflected light from the optical recording medium, and a first optical path converter for selectively guiding part of the light emitted from the first light source towards the first or the second objective lens, and guiding the reflected light towards the first photodetector.

Abstract translation: 一种光学拾取装置包括具有适用于低密度记录介质的低数值孔径（NA）的第一物镜，具有适用于高密度记录介质的高NA的第二物镜，发射短波长光的第一光源 其通过第一和第二物镜聚焦到光学记录介质上，第一光电检测器，其接收来自光学记录介质的返回反射光;以及第一光路转换器，用于选择性地引导从第一光源发射的光的一部分 朝向第一或第二物镜，并且将反射光引向第一光电检测器。

公开(公告)号：US07885165B2

公开(公告)日：2011-02-08

申请号：US11332243

申请日：2006-01-17

Applicant: Soo-han Park ,  Jang-hoon Yoo ,  Hag-hyeon Jang ,  Yong-han Yoon ,  Soo-jin Jung

Inventor： Soo-han Park ,  Jang-hoon Yoo ,  Hag-hyeon Jang ,  Yong-han Yoon ,  Soo-jin Jung

IPC: G11B7/12

CPC classification number: G11B7/1275 ,  G11B7/1353 ,  G11B7/1376 ,  G11B7/1378 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006 ,  G11B2007/0013 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20060266918A1

公开(公告)日：2006-11-30

申请号：US11337593

申请日：2006-01-24

Applicant: Soo-han Park ,  Seok-jung Kim ,  Jang-hoon Yoo ,  Hag-hyeon Jang ,  Yong-han Yoon

Inventor： Soo-han Park ,  Seok-jung Kim ,  Jang-hoon Yoo ,  Hag-hyeon Jang ,  Yong-han Yoon

IPC: G02B27/40 ,  G02B7/04

CPC classification number: G11B7/1374 ,  G02B27/0068 ,  G11B7/13925 ,  G11B7/13927

Abstract: An optical pick-up device is provided that reduces aberrations in light irradiated from an optical recording meidu. The device includes a light source that outputs light for recordation and reproduction of information onto the optical recording medium. An objective lens irradiates the light onto the optical recording medium by concentrating the light. An actuator adjusts the movement of the objective lens to focus the light on at least one or more layers of the optical recording medium. A controller moves the objective lens to substantially reduce the aberration occurring in the light irradiated from the optical recording medium by driving the actuator, such that aberrations, such as asymmetrical aberrations or coma aberrations, may be reduced and corrected.

Abstract translation: 提供一种光学拾取装置，其减少从光学记录墨粉照射的光中的像差。 该装置包括一个光源，该光源输出用于在光学记录介质上记录和再现信息的光。 物镜通过聚光来将光照射到光记录介质上。 致动器调节物镜的运动，以将光聚焦在光记录介质的至少一层或多层上。 控制器移动物镜以通过驱动致动器来大大减少在从光记录介质照射的光中发生的像差，从而可以减小和校正像差，例如不对称像差或彗形像差。

公开(公告)号：US6084840A

公开(公告)日：2000-07-04

申请号：US7209

申请日：1998-01-14

Applicant: Hag-hyeon Jang

Inventor： Hag-hyeon Jang

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

CPC classification number: G11B7/131 ,  G11B7/0901 ,  G11B7/1353

Abstract: An optical pickup is provided which includes a light source and an objective lens for converging incident light from the light source onto a recording medium. The objective lens is arranged to be movable in radial and vertical directions of the recording medium. A holographic optical element (HOE) for changing a traveling path of the incident light is positioned along an optical path between the light source and the recording medium, and has first and second diffraction plates which are divided along a first boundary line and have different diffraction patterns. A photodetector has first and second divided plates which are divided along a second boundary line which is perpendicular to the radial and vertical directions of the recording medium. The first and second divided plates receive light passed through the first and second diffraction plates after being reflected from the recording medium. The first boundary line of the HOE is arranged at a predetermined angle with respect to the radial direction of the recording medium, such that the amount of light received by the first and second divided plates is equal to each other when the center of the objective lens is properly located on the optical path, and amount of light received by the first and second divided plates is different from each other when the center of the objective lens is deviated from the optical path.

Abstract translation: 提供了一种光学拾取器，其包括光源和用于将来自光源的入射光会聚到记录介质上的物镜。 物镜布置成可在记录介质的径向和垂直方向上移动。 用于改变入射光的行进路径的全息光学元件（HOE）沿着光源和记录介质之间的光路定位，并且具有沿着第一边界线分割并具有不同衍射的第一和第二衍射板 模式。 光电检测器具有沿着与记录介质的径向和垂直方向垂直的第二边界线分割的第一和第二分割板。 第一和第二分割板在从记录介质反射之后接收穿过第一和第二衍射板的光。 HOE的第一边界线相对于记录介质的径向布置成预定的角度，使得当物镜的中心处时，由第一和第二分割板接收的光量彼此相等 适当地位于光路上，并且当物镜的中心偏离光路时，由第一和第二分割板接收的光量彼此不同。