公开(公告)号：US07782734B2

公开(公告)日：2010-08-24

申请号：US11329069

申请日：2006-01-11

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G11B7/1353 ,  G11B7/1376 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006

摘要： 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.

摘要翻译： 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：US20060164953A1

公开(公告)日：2006-07-27

申请号：US11329069

申请日：2006-01-11

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/1275 ,  G11B7/1353 ,  G11B7/1376 ,  G11B7/13922 ,  G11B7/13925 ,  G11B2007/0006

摘要： 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.

摘要翻译： 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

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

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

IPC分类号： G11B7/00

CPC分类号： G11B7/1376 ,  G11B7/1263 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/13925 ,  G11B2007/0006

摘要： 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.

摘要翻译： 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：US20060163459A1

公开(公告)日：2006-07-27

申请号：US11329119

申请日：2006-01-11

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

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

IPC分类号： G01D5/34

CPC分类号： G11B7/1376 ,  G11B7/1263 ,  G11B7/1275 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/13925 ,  G11B2007/0006

摘要： 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.

摘要翻译： 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：US20070025229A1

公开(公告)日：2007-02-01

申请号：US11290457

申请日：2005-12-01

申请人： Bong-Gi Kim ,  Soo-Han Park ,  Young-Man Ahn ,  Jang-Hoon Yoo

发明人： Bong-Gi Kim ,  Soo-Han Park ,  Young-Man Ahn ,  Jang-Hoon Yoo

IPC分类号： G11B7/135

CPC分类号： G11B7/1356 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/13927 ,  G11B7/1395 ,  G11B2007/0006

摘要： An optical pickup apparatus according to an embodiment of the present invention, comprises an optical unit for projecting a plurality of wavelengths of light, the light including a celadon light, toward a recording medium and receiving the light reflected from the recording medium to thereby detect an information signal and an error signal, and a compatible objective lens for focusing a light projected from the optical unit to thereby form an optical spot on a recording surface of the recording medium and applying at least three light having different wavelength ranges to be compatibly used for both the high-density and the low-density recording mediums. Accordingly, the optical pickup apparatus is capable of compatibly employing a high-density recording medium, which uses a celadon light and is slimmer than a digital versatile disc (DVD), and at least one low-density recording medium.

摘要翻译： 根据本发明实施例的光学拾取装置包括一个光学单元，用于将多个波长的光（包括青瓷光的光）投射到记录介质上，并接收从记录介质反射的光，从而检测一个 信息信号和误差信号，以及用于聚焦从光学单元投影的光的兼容物镜，从而在记录介质的记录表面上形成光点，并且将至少三个具有不同波长范围的光并入，用于 高密度和低密度记录介质。 因此，光拾取装置能够兼容使用青瓷光的高密度记录介质，并且比数字通用盘（DVD）更薄，以及至少一种低密度记录介质。

公开(公告)号：US07613095B2

公开(公告)日：2009-11-03

申请号：US11290457

申请日：2005-12-01

申请人： Bong-Gi Kim ,  Soo-Han Park ,  Young-Man Ahn ,  Jang-Hoon Yoo

发明人： Bong-Gi Kim ,  Soo-Han Park ,  Young-Man Ahn ,  Jang-Hoon Yoo

IPC分类号： G11B7/00

CPC分类号： G11B7/1356 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1374 ,  G11B7/13927 ,  G11B7/1395 ,  G11B2007/0006

摘要： An optical pickup apparatus according to an embodiment of the present invention, comprises an optical unit for projecting a plurality of wavelengths of light, the light including a celadon light, toward a recording medium and receiving the light reflected from the recording medium to thereby detect an information signal and an error signal, and a compatible objective lens for focusing a light projected from the optical unit to thereby form an optical spot on a recording surface of the recording medium and applying at least three light having different wavelength ranges to be compatibly used for both the high-density and the low-density recording mediums. Accordingly, the optical pickup apparatus is capable of compatibly employing a high-density recording medium, which uses a celadon light and is slimmer than a digital versatile disc (DVD), and at least one low-density recording medium.

摘要翻译： 根据本发明实施例的光学拾取装置包括一个光学单元，用于将多个波长的光（包括青瓷光的光）投射到记录介质上，并接收从记录介质反射的光，从而检测一个 信息信号和误差信号，以及用于聚焦从光学单元投影的光的兼容物镜，从而在记录介质的记录表面上形成光点，并且将至少三个具有不同波长范围的光并入，用于 高密度和低密度记录介质。 因此，光拾取装置能够兼容使用青瓷光的高密度记录介质，并且比数字通用盘（DVD）更薄，以及至少一种低密度记录介质。

公开(公告)号：US07369467B2

公开(公告)日：2008-05-06

申请号：US10998570

申请日：2004-11-30

申请人： Bong-Gi Kim ,  Soo-Han Park ,  Jung-Gug Pae ,  Tae-Youn Heor

发明人： Bong-Gi Kim ,  Soo-Han Park ,  Jung-Gug Pae ,  Tae-Youn Heor

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0956

摘要： Disclosed is an optical pickup including a polarization holographic optical element (HOE) and a photodetector. The optical pickup includes a light source, an optical path changer, an objective lens, a polarization HOE, and a photodetector. The polarization HOE has a pattern designed to generate different astigmatisms in the left and right halves of the polarization HOE in a tangential direction and to divide plus and minus first-order beams in a radial direction. The photodetector includes a first light-receiving portion receiving a zero-order beam and second and third light-receiving portion that are disposed on either side of the first light-receiving portion in the tangential direction and respectively receive the plus and minus first-order beams.

摘要翻译： 公开了一种包括偏振全息光学元件（HOE）和光电检测器的光学拾取器。 光学拾取器包括光源，光路改变器，物镜，偏振HOE和光电检测器。 偏振HOE具有被设计为在切向方向上在偏振HOE的左半部分和右半部分产生不同散光并且沿径向方向分割正负一阶光束的图案。 光电检测器包括接收零级光束的第一光接收部分和第二和第三光接收部分，其在切向方向上设置在第一光接收部分的任一侧上，并且分别接收正，负一级 梁。

公开(公告)号：US20050063263A1

公开(公告)日：2005-03-24

申请号：US10985899

申请日：2004-11-12

申请人： Soo-Han Park ,  Bong-Gi Kim

发明人： Soo-Han Park ,  Bong-Gi Kim

IPC分类号： G11B7/00 ,  G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135

CPC分类号： G11B7/1398 ,  G11B7/0943 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1356 ,  G11B2007/0006

摘要： A compatible optical pickup apparatus and method are provided. The apparatus and method include a first light source for generating and emitting a first light having a predetermined wavelength, a second light source for generating and emitting a second light having a wavelength different from the wavelength of the first light, a beam shaping beam splitter provided in paths of the first and second lights for shaping the first and second lights in order to change a shape of a profile of each of the first and second lights to a circular shape and change the paths of the first and second lights, an objective lens for focusing the first and second lights and forming light spots on an optical recording medium, and a main photodetector for receiving the first and second lights by being reflected from the optical recording medium and passing through the objective lens and the beam shaping beam splitter, and detecting an information signal and an error signal.

摘要翻译： 提供了兼容的光学拾取装置和方法。 该装置和方法包括用于产生和发射具有预定波长的第一光的第一光源，用于产生和发射具有与第一光的波长不同的波长的第二光的第二光源，设置有光束成形分束器 在用于使第一和第二光成形的第一和第二光的路径中，以便将第一和第二光中的每一个的轮廓的形状改变为圆形并改变第一和第二光的路径，物镜 用于将第一和第二光聚焦并在光学记录介质上形成光点;以及主光电检测器，用于通过从光学记录介质反射并通过物镜和光束整形分束器来接收第一和第二光，以及 检测信息信号和误差信号。

公开(公告)号：US07342868B2

公开(公告)日：2008-03-11

申请号：US10985899

申请日：2004-11-12

申请人： Soo-Han Park ,  Bong-Gi Kim

发明人： Soo-Han Park ,  Bong-Gi Kim

IPC分类号： G11B7/00

CPC分类号： G11B7/1398 ,  G11B7/0943 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1356 ,  G11B2007/0006

摘要： A compatible optical pickup apparatus and method are provided. The apparatus and method include a first light source for generating and emitting a first light having a predetermined wavelength, a second light source for generating and emitting a second light having a wavelength different from the wavelength of the first light, a beam shaping beam splitter provided in paths of the first and second lights for shaping the first and second lights in order to change a shape of a profile of each of the first and second lights to a circular shape and change the paths of the first and second lights, an objective lens for focusing the first and second lights and forming light spots on an optical recording medium, and a main photodetector for receiving the first and second lights by being reflected from the optical recording medium and passing through the objective lens and the beam shaping beam splitter, and detecting an information signal and an error signal.

摘要翻译： 提供了一种兼容的光学拾取装置和方法。 该装置和方法包括用于产生和发射具有预定波长的第一光的第一光源，用于产生和发射具有与第一光的波长不同的波长的第二光的第二光源，设置有光束成形分束器 在用于使第一和第二光成形的第一和第二光的路径中，以便将第一和第二光中的每一个的轮廓的形状改变为圆形并改变第一和第二光的路径，物镜 用于将第一和第二光聚焦并在光学记录介质上形成光点;以及主光电检测器，用于通过从光学记录介质反射并通过物镜和光束整形分束器来接收第一和第二光，以及 检测信息信号和误差信号。

公开(公告)号：US07298688B2

公开(公告)日：2007-11-20

申请号：US10985968

申请日：2004-11-12

申请人： Bong-Gi Kim ,  Soo-Han Park

发明人： Bong-Gi Kim ,  Soo-Han Park

IPC分类号： G11B7/00

CPC分类号： G11B7/1359 ,  G11B7/1263 ,  G11B7/1398

摘要： A light emitting module and method for shaping a beam via a beam shaping window and an optical pickup apparatus employing the same. The light emitting module includes a base, a semiconductor laser that is installed on the base and emits a laser beam of a predetermined wavelength, a cap surrounding the semiconductor laser, a beam shaping window that is fitted with a predetermined portion of the cap corresponding to the propagation path of the laser beam and shapes a transmitted laser beam while reflecting a portion of an incident beam, and a monitor photodetector that is disposed within the cap and receives the laser beam reflected by the beam shaping window in order to monitor the laser beam emitted by the semiconductor laser.

摘要翻译： 一种用于通过光束整形窗口对光束进行成形的发光模块和方法以及采用该光发射模块的光学拾取装置。 发光模块包括基座，安装在基座上并发射预定波长的激光束的半导体激光器，围绕半导体激光器的盖子，光束整形窗口，其与帽子的预定部分相配合 激光束的传播路径，并且在反射入射光束的一部分的同时对透射的激光束进行成形，以及监视光电检测器，其设置在盖内并接收由光束整形窗反射的激光束，以便监视激光束 由半导体激光器发射。