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。

公开(公告)号：US07606135B2

公开(公告)日：2009-10-20

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： G11B7/00

CPC分类号： G11B7/1275 ,  G11B7/1353 ,  G11B2007/0006

摘要： An optical recording/reproducing apparatus including 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： 一种光学记录/再现装置，包括发射具有不同波长的光的多个光源，用于在/不同记录密度的各种类型的光学记录介质上记录/再现信息，其中从光源发射的至少两个光具有 极化分量彼此正交; 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。

公开(公告)号：US07593306B2

公开(公告)日：2009-09-22

申请号：US11337584

申请日：2006-01-24

申请人： Bong-gi Kim ,  Soo-han Park ,  Jang-hoon Yoo

发明人： Bong-gi Kim ,  Soo-han Park ,  Jang-hoon Yoo

IPC分类号： G11B7/00

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/1381

摘要： A diffraction element for an optical pick-up apparatus is provided that enables more accurate focusing control. The diffraction element for an optical pick-up apparatus is divided into first and second regions, each being formed with a grid pattern in which grids are repeated with a predetermined pitch P. The grid pattern in at least one of the first and second regions is tilted by a predetermined angle with respect to a virtual line VL substantially perpendicular to a division line DL that divides the first and second regions.

摘要翻译： 提供了一种用于光学拾取装置的衍射元件，其能够进行更精确的聚焦控制。 用于光学拾取装置的衍射元件被分成第一和第二区域，每个区域形成有栅格图案，栅格图案以预定间距P重复。第一和第二区域中的至少一个区域中的栅格图案是 相对于基本上垂直于划分第一和第二区域的分割线DL的虚拟线VL倾斜预定角度。

公开(公告)号：US20060120248A1

公开(公告)日：2006-06-08

申请号：US11337584

申请日：2006-01-24

申请人： Bong-gi Kim ,  Soo-han Park ,  Jang-hoon Yoo

发明人： Bong-gi Kim ,  Soo-han Park ,  Jang-hoon Yoo

IPC分类号： G11B7/135

CPC分类号： G11B7/1353 ,  G11B7/0903 ,  G11B7/0909 ,  G11B7/1381

摘要： A diffraction element for an optical pick-up apparatus is provided that enables more accurate focusing control. The diffraction element for an optical pick-up apparatus is divided into first and second regions, each being formed with a grid pattern in which grids are repeated with a predetermined pitch P. The grid pattern in at least one of the first and second regions is tilted by a predetermined angle with respect to a virtual line VL substantially perpendicular to a division line DL that divides the first and second regions.

公开(公告)号：US07529039B2

公开(公告)日：2009-05-05

申请号：US11748753

申请日：2007-05-15

申请人： Jang-hoon Yoo ,  Dong-ho Shin ,  Soo-han Park

发明人： Jang-hoon Yoo ,  Dong-ho Shin ,  Soo-han Park

IPC分类号： G02B13/18 ,  G02B3/02 ,  G02B3/08 ,  G11B7/00 ,  G11B7/135

CPC分类号： G02B27/0037 ,  G02B27/4238 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922

摘要： An object lens arranged on a light proceeding path to focus light on a recording medium includes a first surface that is an incident surface on which light is incident, a second surface from which light exits to be focused on the recording medium, and a diffractive optical element disposed on at least one of the first and second surfaces and which has a refractivity of fD/f

摘要翻译： 布置在光行进路径上以将光聚焦在记录介质上的物镜包括作为光入射的入射表面的第一表面，光从其出射以聚焦在记录介质上的第二表面，以及衍射光学 元件设置在第一和第二表面中的至少一个上，并且具有fD / f <5的折射率，fD是衍射光学元件的焦距，f是物镜的焦距。 物镜的数值孔径为0.75以上。

公开(公告)号：US07885165B2

公开(公告)日：2011-02-08

申请号：US11332243

申请日：2006-01-17

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

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

IPC分类号： G11B7/12

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。

公开(公告)号：US20080074757A1

公开(公告)日：2008-03-27

申请号：US11748753

申请日：2007-05-15

申请人： Jang-hoon Yoo ,  Dong-ho Shin ,  Soo-han Park

发明人： Jang-hoon Yoo ,  Dong-ho Shin ,  Soo-han Park

IPC分类号： G02B3/10 ,  G11B7/00

CPC分类号： G02B27/0037 ,  G02B27/4238 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922

摘要： An object lens arranged on a light proceeding path to focus light on a recording medium includes a first surface that is an incident surface on which light is incident, a second surface from which light exits to be focused on the recording medium, and a diffractive optical element disposed on at least one of the first and second surfaces and which has a refractivity of fD/f

摘要翻译： 布置在光行进路径上以将光聚焦在记录介质上的物镜包括作为光入射的入射表面的第一表面，光从其出射以聚焦在记录介质上的第二表面，以及衍射光学 元件设置在所述第一表面和所述第二表面中的至少一个表面上，并且具有作为所述衍射光学元件的焦距的f D D / f <5的折射率 f是物镜的焦距。 物镜的数值孔径为0.75以上。

公开(公告)号：US20070053274A1

公开(公告)日：2007-03-08

申请号：US11514253

申请日：2006-09-01

申请人： Jang-hoon Yoo ,  Soo-han Park ,  Young-man Ahn ,  Tae-kyung Kim ,  Yong-han Yoon ,  Young-sun Jeon

发明人： Jang-hoon Yoo ,  Soo-han Park ,  Young-man Ahn ,  Tae-kyung Kim ,  Yong-han Yoon ,  Young-sun Jeon

IPC分类号： G11B7/135

CPC分类号： G11B7/1369 ,  G11B7/1353 ,  G11B7/1365 ,  G11B7/139 ,  G11B2007/0006

摘要： An optical pickup and an optical recording and/or reproducing apparatus include a light source which emits light having a first wavelength, an objective lens that focuses incident light on an information storage medium and is optimized for a first information storage medium of a predetermined standard, a polarization changer which changes the light with the first wavelength incident from the light source into light beams with first and second polarizations that are orthogonal to each other, a polarization hologram element which has a varying refractive power according to the polarization of the light with the first wavelength that passes through the polarization changer, a photodetector which receives light after the light has been emitted from the light source, focused on the information storage medium by the objective lens, and reflected by the information storage medium, and an optical path changer which guides the light reflected by the information storage medium toward the photodetector, wherein the optical pickup can compatibly adopt the first information storage medium and a second information storage medium which has a different thickness from the first information storage medium.

摘要翻译： 光学拾取器和光学记录和/或再现装置包括发射具有第一波长的光的光源，将入射光聚焦在信息存储介质上并针对预定标准的第一信息存储介质进行了优化的物镜， 将从光源入射的第一波长的光改变为具有彼此正交的第一和第二偏振光束的偏振光改变器，根据光的偏振具有变化的屈光力的偏振全息元件 通过偏振光变换器的第一波长，从光源发光后接收光的光电检测器，由物镜聚焦在信息存储介质上，并由信息存储介质反射;以及光路改变器， 将由信息存储介质反射的光引向光电二极管 检测器，其中所述光学拾取器可兼容地采用所述第一信息存储介质和与所述第一信息存储介质具有不同厚度的第二信息存储介质。

公开(公告)号：US20060266918A1

公开(公告)日：2006-11-30

申请号：US11337593

申请日：2006-01-24

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

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

IPC分类号： G02B27/40 ,  G02B7/04

CPC分类号： G11B7/1374 ,  G02B27/0068 ,  G11B7/13925 ,  G11B7/13927

摘要： 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.

摘要翻译： 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：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。