公开(公告)号：US6009066A

公开(公告)日：1999-12-28

申请号：US196355

申请日：1998-11-19

Applicant: Jang-Hoon Yoo ,  Chul-Woo Lee

Inventor： Jang-Hoon Yoo ,  Chul-Woo Lee

IPC: G11B7/135 ,  G11B7/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/125 ,  G11B7/13

CPC classification number: G11B7/13925 ,  G11B7/123 ,  G11B7/133 ,  G11B7/1356 ,  G11B2007/0006

Abstract: An optical pickup compatible with at least two types of optical recording media using light beams having respectively different wavelengths for recording and reproducing information. In the optical pickup, a first laser light source emits a light beam having a relatively shorter wavelength. A first photodetector detects a reflected light beam with respect to the relatively shorter wavelength. An objective lens forms an annular shielding region between a near axis region of a relatively smaller radius and a far axis region of a relatively larger radius. A laser unit emits a light beam having a relatively longer wavelength, and detects only a light beam passing though the near axis region in the objective lens among reflected light beams having the relatively longer wavelength. A plurality of beam splitters directs the light beams emitted from the first laser light source and the laser unit to the objective lens, and directs the light beam reflected from each of the optical recording media to a corresponding one of the first photodetector and the laser unit. The optical pickup of the present invention has compatibility with respect to disks regardless of the thicknesses and various aspects of the disks, and can detect a good signal. Also, the optical pickup is manufactured and mass-produced at a low cost.

Abstract translation: 一种与至少两种类型的光学记录介质兼容的光学拾取器，其使用具有不同波长的光束来记录和再现信息。 在光学拾取器中，第一激光光源发射具有相对较短波长的光束。 第一光电检测器相对于相对较短的波长检测反射光束。 物镜在相对较小半径的近轴区域和较大半径的远轴区域之间形成环形屏蔽区域。 激光单元发射具有相对更长波长的光束，并且仅在具有相对较长波长的反射光束中仅检测通过物镜中的近轴区域的光束。 多个分束器将从第一激光光源和激光单元发射的光束引导到物镜，并将从每个光记录介质反射的光束引导到第一光电检测器和激光单元中的相应一个 。 本发明的光拾取器与盘的厚度和各个方面无关，而是兼容于磁盘，并且可以检测出良好的信号。 而且，以低成本制造和批量生产光学拾取器。

公开(公告)号：US5986993A

公开(公告)日：1999-11-16

申请号：US779520

申请日：1997-01-07

Applicant: Jang-hoon Yoo ,  Chul-woo Lee ,  Kyung-hwa Rim

Inventor： Jang-hoon Yoo ,  Chul-woo Lee ,  Kyung-hwa Rim

IPC: G02B13/00 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC classification number: G11B7/1374 ,  G11B7/139 ,  G11B2007/0006

Abstract: An optical pickup device which can obtain a stable reproduction signal by increasing the numerical aperture of an objective lens includes an objective lens facing a disc, a light source for radiating light to the disc via the objective lens, a beam splitter provided between the light source and objective lens for directing the light reflected from the disc in a path different from that of the light travelled from the light source, a photodetector for detecting the light reflected from the disc and travelled via the beam splitter, and a diaphragm provided between the beam splitter and light source and having a predetermined numerical aperture.

Abstract translation: 通过增加物镜的数值孔径可获得稳定的再现信号的光拾取装置包括面对盘的物镜，用于经由物镜将光照射到盘的光源，设置在光源之间的分束器 以及物镜，用于将光从盘反射的光线导向与从光源行进的光不同的路径;光电检测器，用于检测从盘反射并经由分束器行进的光，以及设置在光束之间的光阑 分光器和光源并具有预定的数值孔径。

公开(公告)号：US5909424A

公开(公告)日：1999-06-01

申请号：US933249

申请日：1997-09-18

Applicant: Chul-woo Lee ,  Jang-hoon Yoo

Inventor： Chul-woo Lee ,  Jang-hoon Yoo

IPC: G02B7/00 ,  G02B3/08 ,  G02B3/10 ,  G02B13/00 ,  G02B13/18 ,  G11B7/00 ,  G11B7/08 ,  G11B7/135

CPC classification number: G11B7/1367 ,  G11B7/1374 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US5841754A

公开(公告)日：1998-11-24

申请号：US772362

申请日：1996-12-23

Applicant: Chul-woo Lee ,  Jang-hoon Yoo

Inventor： Chul-woo Lee ,  Jang-hoon Yoo

IPC: G02B13/00 ,  G11B7/00 ,  G11B7/09 ,  G11B7/12 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135

CPC classification number: G11B7/1353 ,  G11B7/131 ,  G11B7/1374 ,  G11B7/139 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical pickup device which can obtain a stable reproduction signal by an increased numerical aperture of an objective lens. The optical pickup device includes an objective lens unit having an objective lens facing a disc and having a predetermined effective diameter and at least two auxiliary lenses provided in exterior sides of the objective lens for directing +1st-order diffracted light to a light path different from that of the light passing through the objective lens, a light source for irradiating light onto the disc through the objective lens, a light splitter interposed between the light source and the objective lens for directing the light reflected from the disc to a light path different from that from the light source, a photodetector for detecting the light reflected from the disc and transmitted via the light splitter, and at least two diffracted light detectors for detecting diffracted light incident from the auxiliary lenses. Therefore, a high reproduction signal and a stable track signal can be obtained.

Abstract translation: 一种光学拾取装置，其可以通过增加物镜的数值孔径获得稳定的再现信号。 所述光学拾取装置包括物镜单元，其具有面向盘并且具有预定有效直径的物镜和设置在所述物镜的外侧中的至少两个辅助透镜，用于将+ 1级衍射光引导到不同于 通过物镜的光的光源，用于通过物镜将光照射到盘上的光源，插入在光源和物镜之间的光分离器，用于将从盘反射的光引导到不同于 来自光源的光电检测器，用于检测从光盘反射并经由分光器传输的光;以及至少两个衍射光检测器，用于检测从辅助透镜入射的衍射光。 因此，可以获得高再现信号和稳定的轨道信号。

公开(公告)号：US08325242B2

公开(公告)日：2012-12-04

申请号：US12683506

申请日：2010-01-07

Applicant: Eui-kuen Oh ,  Jang-hoon Yoo ,  Yong-wook Kim ,  Seong-ho Hwang ,  Douk-young Song

Inventor： Eui-kuen Oh ,  Jang-hoon Yoo ,  Yong-wook Kim ,  Seong-ho Hwang ,  Douk-young Song

IPC: H04N5/228

CPC classification number: G03B17/00 ,  H04N5/2254 ,  H04N5/23248

Abstract: An image stabilizing apparatus may include a fixing member disposed to a lens assembly having a through hole of which a center coincides with an optical axis of the lens assembly, a moving member disposed to move perpendicular to the optical axis with respect to the fixing member having a lens holder projecting in a direction of the optical axis to hold a compensating lens, a driving portion causing the moving member to move in a first direction perpendicular to the optical axis and in a second direction perpendicular to the optical axis and the first direction, four position determining portions formed in the first direction and the second direction on an outer circumferential surface of the lens holder of the moving member, and four stoppers projecting from an outer circumferential surface of the through hole of the fixing member to the moving member.

Abstract translation: 图像稳定装置可以包括固定构件，其设置在透镜组件上，该透镜组件具有中心与透镜组件的光轴重合的通孔，移动构件设置成相对于固定构件垂直于光轴移动， 沿着光轴的方向突出以保持补偿透镜的透镜保持器，使得移动构件沿垂直于光轴的第一方向和垂直于光轴和第一方向的第二方向移动的驱动部， 在移动构件的透镜架的外周面上形成在第一方向和第二方向上的四个位置判定部以及从固定部件的通孔的外周面向移动部件突出的四个止动件。

公开(公告)号：US20110222164A1

公开(公告)日：2011-09-15

申请号：US13046881

申请日：2011-03-14

Applicant: Jung-pa Seo ,  Jang-hoon Yoo

Inventor： Jung-pa Seo ,  Jang-hoon Yoo

IPC: G02B15/04

CPC classification number: G02B15/04 ,  G02B15/173 ,  G02B15/177

Abstract: A lens system and a photographing apparatus including the lens system are provided, the lens system including a first sub lens system that includes a plurality of lens groups, and a second sub lens system that includes a replacement lens group that replaces or is replaced by some of the plurality of lens groups.

Abstract translation: 提供一种透镜系统和包括该透镜系统的拍摄设备，所述透镜系统包括包括多个透镜组的第一子透镜系统和包括替换或替换为一些的替换透镜组的第二子透镜系统 的多个透镜组。

公开(公告)号：US20110122269A1

公开(公告)日：2011-05-26

申请号：US12942332

申请日：2010-11-09

Applicant: Liefeng ZHAO ,  Jang-hoon Yoo

Inventor： Liefeng ZHAO ,  Jang-hoon Yoo

IPC: H04N5/228 ,  G03B17/00

CPC classification number: G03B17/00 ,  H04N5/23248 ,  H04N5/23258 ,  H04N5/23287

Abstract: A method of compensating for vibration and an imaging apparatus are provided. The method of compensating for vibration includes determining whether a vibration compensation starting condition is satisfied, and starting compensating for vibration prior to operating a shutter, if the vibration compensation starting condition is satisfied. Accordingly, a shutter lag is reduced and power consumption is reduced, and accuracy of vibration compensation is improved.

Abstract translation: 提供了补偿振动的方法和成像装置。 补偿振动的方法包括确定是否满足振动补偿启动条件，以及如果满足振动补偿启动条件，则开始补偿操作闸板之前的振动。 因此，快门滞后减少，功耗降低，振动补偿的精度提高。

公开(公告)号：US20100295952A1

公开(公告)日：2010-11-25

申请号：US12683506

申请日：2010-01-07

Applicant: Eui-kuen OH ,  Jang-hoon Yoo ,  Yong-wook Kim ,  Seong-ho Hwang ,  Douk-young Song

Inventor： Eui-kuen OH ,  Jang-hoon Yoo ,  Yong-wook Kim ,  Seong-ho Hwang ,  Douk-young Song

IPC: H04N5/228 ,  G03B17/00

CPC classification number: G03B17/00 ,  H04N5/2254 ,  H04N5/23248

Abstract: An image stabilizing apparatus may include a fixing member disposed to a lens assembly having a through hole of which a center coincides with an optical axis of the lens assembly, a moving member disposed to move perpendicular to the optical axis with respect to the fixing member having a lens holder projecting in a direction of the optical axis to hold a compensating lens, a driving portion causing the moving member to move in a first direction perpendicular to the optical axis and in a second direction perpendicular to the optical axis and the first direction, four position determining portions formed in the first direction and the second direction on an outer circumferential surface of the lens holder of the moving member, and four stoppers projecting from an outer circumferential surface of the through hole of the fixing member to the moving member.

Abstract translation: 图像稳定装置可以包括固定构件，其设置在透镜组件上，该透镜组件具有中心与透镜组件的光轴重合的通孔，移动构件设置成相对于固定构件垂直于光轴移动， 沿着光轴的方向突出以保持补偿透镜的透镜保持器，使得移动构件沿垂直于光轴的第一方向和垂直于光轴和第一方向的第二方向移动的驱动部， 在移动构件的透镜架的外周面上形成在第一方向和第二方向上的四个位置判定部以及从固定部件的通孔的外周面向移动部件突出的四个止动件。

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：US07529039B2

公开(公告)日：2009-05-05

申请号：US11748753

申请日：2007-05-15

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

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

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

CPC classification number: G02B27/0037 ,  G02B27/4238 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922

Abstract: 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

Abstract translation: 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。