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21. 发明授权

US07586826B2 Compatible optical pickup 有权
标题翻译：兼容光学拾音器
公开(公告)号：US07586826B2
公开(公告)日：2009-09-08
申请号：US10882154
申请日：2004-07-01
申请人： Soo-han Park , Bong-gi Kim
发明人： Soo-han Park , Bong-gi Kim
IPC分类号： G11B7/135
CPC分类号： G11B7/139 , G11B7/1353 , G11B7/1365 , G11B7/1369 , G11B7/1374 , G11B7/13925 , G11B2007/0006
摘要： An optical pickup which is compatible with at least one high density recording medium that uses a blue-violet beam and at least one lower density recording medium, the optical pickup including: an optical unit to selectively emit one of a plurality of beams with different wavelengths onto one of the at least one high density recording medium and the at least one lower density recording medium, and to receive the respective beam reflected from the respective recording medium; and a holographic objective lens to focus the respective beams emitted by the optical unit on a recording surface of the respective recording medium, the holographic objective lens including a first holographic lens region and a second holographic lens region located inside the first holographic lens region, wherein holographic patterns of the first and second holographic lens regions respectively produce a first effective numerical aperture (NA) for the at least one high density recording medium and at least one additional effective NA suitable for the at least one lower density recording medium.
摘要翻译：一种光拾取器，其与使用蓝紫色光束和至少一种较低密度记录介质的至少一种高密度记录介质兼容，所述光学拾取器包括：光学单元，用于选择性地发射具有不同波长的多个光束中的一个至少一个高密度记录介质和至少一个低密度记录介质中的一个，并且接收从各个记录介质反射的各个光束; 以及全息物镜，用于将由光学单元发射的各个光束聚焦在各个记录介质的记录表面上，该全息物镜包括位于第一全息透镜区域内的第一全息透镜区域和第二全息透镜区域，其中，第一和第二全息透镜区域的全息图案分别产生用于至少一个高密度记录介质的第一有效数值孔径（NA）和适用于至少一个较低密度记录介质的至少一个附加有效NA。

22. 发明授权

US07502298B2 Optical pickup apparatus for optical data media of different formats and method thereof 有权
标题翻译：用于不同格式的光学数据媒体的光学拾取装置及其方法
公开(公告)号：US07502298B2
公开(公告)日：2009-03-10
申请号：US10962577
申请日：2004-10-13
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： G11B7/1353 , G11B7/0903 , G11B2007/0006
摘要： An optical pickup apparatus for reading and writing information from and to optical data media in different formats and a method thereof are provided. The optical pickup apparatus comprises a twin laser diode (Twin LD), a diffraction element for dividing a laser beam incident on a data medium into five beams, and an optical detector for focusing a laser beam reflected from the data medium to detect an information signal and signals for carrying out servo controls. The divided beams are focused on a predetermined location in based on a data medium format, and the beam reflected from the data medium is received on and detected from the corresponding photodiodes of the optical detector so that a focus error signal and a tracking error signal are generated.
摘要翻译：提供了一种用于以不同格式从光学数据媒体读取和写入信息的光学拾取装置及其方法。光拾取装置包括双激光二极管（Twin LD），用于将入射到数据介质上的激光束分成五束的衍射元件，以及用于聚焦从数据介质反射的激光束以检测信息信号的光检测器和用于执行伺服控制的信号。分割的光束基于数据介质格式聚焦在预定位置，并且从数据介质反射的光束被接收在光检测器的相应光电二极管上并从其检测，使得聚焦误差信号和跟踪误差信号为生成。

23. 发明授权

US07426172B2 Optical module and optical pickup including the same 有权
标题翻译：光学模块和光学拾取器包括它
公开(公告)号：US07426172B2
公开(公告)日：2008-09-16
申请号：US10834998
申请日：2004-04-30
申请人： Bong-gi Kim , Soo-han Park , Hyo-chan Lee , Jong-uk Kim
发明人： Bong-gi Kim , Soo-han Park , Hyo-chan Lee , Jong-uk Kim
IPC分类号： G11B7/135 , G11B7/09
CPC分类号： G11B7/1353 , G11B7/0909 , G11B7/123 , G11B7/1263 , G11B7/127 , G11B7/131 , G11B7/1356 , G11B7/1359 , G11B7/1398 , G11B2007/0006
摘要： An optical pickup includes an optical module that detects an information signal and/or an error signal by radiating light to a recording medium and receives light reflected by the recording medium. The optical module includes a light source; an optical path changer that changes a path of light emitted from the light source; a main photodetector that receives light that is reflected off a recording medium back to the optical module to detect an information signal and/or an error signal; and a hologram element that generates an astigmatism of the light incident onto the optical module. Since most optical elements of the optical pickup except an objective lens are packaged in the optical module, the entire structure of the optical pickup can be simplified and the number of bonding points for fixing the optical elements of the optical pickup on a base can be reduced.
摘要翻译：光学拾取器包括光学模块，其通过向记录介质照射光并接收由记录介质反射的光来检测信息信号和/或误差信号。光学模块包括光源; 光路改变器，其改变从光源发射的光的路径; 主光电检测器，其将从记录介质反射的光返回到光模块以检测信息信号和/或误差信号; 以及产生入射到光学模块上的光的散光的全息元件。由于除了物镜之外的光学拾取器的大多数光学元件被封装在光学模块中，所以可以简化光学拾取器的整体结构，并且可以减少用于将光学拾取器的光学元件固定在基座上的接合点的数量。

24. 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。

25. 发明授权

US07606135B2 Optical recording/reproducing apparatus capable of recording/reproducing information onto/from various types of optical recording media of different recording densities and different thicknesses 有权
标题翻译：能够在不同记录密度和不同厚度的各种类型的光学记录介质上记录/再现信息的光学记录/再现设备
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。

26. 发明授权

US07593306B2 Diffraction element and optical pick-up apparatus having the same 失效
$Diffraction element and optical pick-up apparatus having the same$
标题翻译：具有该衍射元件和光学拾取装置的衍射元件
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。

27. 发明授权

US07450477B2 Optical pickup having a polarization beam splitter 有权
标题翻译：具有偏振分束器的光学拾取器
公开(公告)号：US07450477B2
公开(公告)日：2008-11-11
申请号：US10993443
申请日：2004-11-22
申请人： Bong-gi Kim , Soo-han Park , Chun-seong Park
发明人： Bong-gi Kim , Soo-han Park , Chun-seong Park
IPC分类号： G11B7/13
CPC分类号： G11B7/1356 , G11B7/1395
摘要： An optical pickup which can remove birefringence due to the non-uniformity of an optical recording medium by using a polarization beam splitter. The optical pickup includes a light source emitting a laser beam, a beam splitter reflecting part of incident light and straight transmitting the remaining light to change a proceeding path of the incident light, an objective lens focusing the incident light passed through the beam splitter to form a light spot on an optical recording medium, a polarization beam splitter arranged on an optical path between the beam splitter and the objective lens for transmitting light having one polarization and reflecting light having a different polarization. The optical pickup further includes a first photodetector for receiving the light having one polarization which is reflected from the optical recording medium and is transmitted by the polarization beam splitter and passes through the beam splitter, and a second photodetector for receiving the light having a different polarization reflected from the optical recording medium that is reflected by the polarization beam splitter. An information signal and error signals are then determined from a signal detected by the first and second photodetectors.
摘要翻译：一种光拾取器，其可以通过使用偏振分束器来消除由于光记录介质的不均匀性引起的双折射。光学拾取器包括发射激光束的光源，分光器反射入射光的一部分，并直接透射剩余的光以改变入射光的行进路径;物镜聚焦通过分束器的入射光以形成光学记录介质上的光点，设置在分束器和物镜之间的光路上的偏振分束器，用于透射具有一个偏振光的光和具有不同偏振的反射光。光学拾取器还包括第一光电检测器，用于接收具有一个极化的光，该偏振光从光记录介质反射并被偏振分束器透射并通过分束器;以及第二光电检测器，用于接收具有不同极化的光由偏振分束器反射的光记录介质反射。然后，从由第一和第二光电检测器检测的信号确定信息信号和误差信号。

28. 发明授权

US07334246B2 Optical pickup apparatus for optical disc drive having an improved receiving unit 失效
标题翻译：具有改进的接收单元的用于光盘驱动器的光学拾取装置
公开(公告)号：US07334246B2
公开(公告)日：2008-02-19
申请号：US10983581
申请日：2004-11-09
申请人： Soo-han Park , Bong-gi Kim , Do-hoan Nam
发明人： Soo-han Park , Bong-gi Kim , Do-hoan Nam
IPC分类号： G11B7/08 , G11B7/085 , G11B7/09
CPC分类号： G11B7/08582
摘要： An optical pickup apparatus for an optical disc drive, including: a base; a turntable disposed above the base and which rotates an optical disc; an optical pickup unit which reciprocates with respect to the turntable in a radial direction of the turntable; a driving part which moves the optical pickup unit with respect to the turntable; and a guide unit having an auxiliary guide which supports an end of the optical pickup unit and which guides the optical pickup unit along a moving path. The optical pickup unit and the auxiliary guide are in line-contact with each other.
摘要翻译：一种用于光盘驱动器的光学拾取装置，包括：基座; 设置在所述基座上方并使光盘旋转的转盘; 光学拾取单元，其在转盘的径向方向上相对于转台往复运动; 使光拾取单元相对于转台移动的驱动部; 以及引导单元，其具有支撑光学拾取单元的端部并且沿着移动路径引导光学拾取单元的辅助引导件。光学拾取单元和辅助引导件彼此线接触。

29. 发明申请

US20060120248A1 Diffraction element and optical pick-up apparatus having the same 失效
$Diffraction element and optical pick-up apparatus having the same$
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.

30. 发明授权

US08897106B2 Objective lens for optical pickup and optical pickup apparatus having the same 有权
标题翻译：用于光学拾取器和具有该物镜的光学拾取装置的物镜
公开(公告)号：US08897106B2
公开(公告)日：2014-11-25
申请号：US13599473
申请日：2012-08-30
申请人： Seong-su Park , Soo-han Park , Woo-chang Chun
发明人： Seong-su Park , Soo-han Park , Woo-chang Chun
IPC分类号： G11B7/135 , G11B7/1374 , G02B5/18 , G02B13/00 , G11B7/1381 , G11B7/1353 , G11B7/00
CPC分类号： G11B7/1381 , G02B5/1814 , G02B13/005 , G02B13/0055 , G11B7/1353 , G11B7/1374 , G11B2007/0006
摘要： An objective lens for optical pickup and an optical pickup apparatus having the same are provided. The objective lens for optical pickup includes a light source side lens surface and a disc side lens surface. The light source side lens surface and the disc side lens surface each include an effective region disposed at a central region of the objective lens and a non-effective region disposed outside the effective region. An optical path changing element, disposed in the non-effective region of at least one of the light source side lens surface and the disc side lens surface, changes a path of light incident thereon.
摘要翻译：提供了一种用于光学拾取器的物镜和具有该物镜的光学拾取装置。用于光学拾取器的物镜包括光源侧透镜表面和盘侧透镜表面。光源侧透镜表面和盘侧透镜表面各自包括设置在物镜的中心区域的有效区域和设置在有效区域外的非有效区域。设置在光源侧透镜表面和盘侧透镜表面中的至少一个的非有效区域中的光路改变元件改变入射到其上的光的路径。

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