公开(公告)号：US20060274631A1

公开(公告)日：2006-12-07

申请号：US11430847

申请日：2006-05-10

Applicant: Jang-hoon Yoo ,  Hag-hyun Jang ,  Soo-han Park ,  Soo-jin Jeong ,  Tae-youn Heor ,  Bong-gi Kim

Inventor： Jang-hoon Yoo ,  Hag-hyun Jang ,  Soo-han Park ,  Soo-jin Jeong ,  Tae-youn Heor ,  Bong-gi Kim

IPC: G11B7/135

CPC classification number: G11B7/1275 ,  G11B7/1353 ,  G11B2007/0006

Abstract: 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.

Abstract translation: 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：US20060164708A1

公开(公告)日：2006-07-27

申请号：US11332243

申请日：2006-01-17

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

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

IPC: G02B26/08

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：US07072254B2

公开(公告)日：2006-07-04

申请号：US10217330

申请日：2002-08-13

Applicant: Dae-sik Kim ,  Soon-kyo Hong ,  Chul-woo Lee ,  Ho-cheol Lee ,  Kun-ho Cho ,  Jang-hoon Yoo

Inventor： Dae-sik Kim ,  Soon-kyo Hong ,  Chul-woo Lee ,  Ho-cheol Lee ,  Kun-ho Cho ,  Jang-hoon Yoo

IPC: G11B5/09 ,  G11B7/24

CPC classification number: G11B7/13922 ,  G11B7/123 ,  G11B7/1356 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/24056

Abstract: An optical pickup device includes a light unit for irradiating a light beam having a wavelength longer than 650 nm onto a recording medium and receiving and detecting a light beam reflected by the recording medium, and an objective tens formed of a single lens having an NA of 0.7 or more to form a light spot on the recording medium by condensing an incident light beam emitted from the light unit. A recording medium has a recording density of a DVD family or more and is formed of a material suitable for a long wavelength of 700 nm or more so that a reproduction signal by a reflectance of a recording surface is optimized. Thus, a compact high density optical recording/reproducing apparatus which is inexpensive and has high performance can be realized.

Abstract translation: 一种光学拾取装置，包括用于将长度大于650nm的波长的光束照射到记录介质上并接收和检测由记录介质反射的光束的光单元，以及由具有NA 0.7以上，通过会聚来自光单元的入射光束，在记录介质上形成光斑。 记录介质具有DVD系列以上的记录密度，并且由适合于700nm以上的长波长的材料形成，使得通过记录面的反射率的再现信号被优化。 因此，可以实现廉价且具有高性能的紧凑型高密度光学记录/再现装置。

公开(公告)号：US20050169154A1

公开(公告)日：2005-08-04

申请号：US11091449

申请日：2005-03-29

Applicant: Jang-hoon Yoo ,  Kun-ho Cho ,  Seung-tae Jung ,  Chul-woo Lee ,  Dong-ho Shin

Inventor： Jang-hoon Yoo ,  Kun-ho Cho ,  Seung-tae Jung ,  Chul-woo Lee ,  Dong-ho Shin

IPC: G02B13/00 ,  G02B3/08 ,  G02B13/18 ,  G11B7/085 ,  G11B7/09 ,  G11B7/095 ,  G11B7/135 ,  G11B7/24 ,  G11B7/00

CPC classification number: G11B7/13927 ,  G11B7/1362 ,  G11B7/1374 ,  G11B7/1378 ,  G11B2007/13725

Abstract: An optical pickup includes a light source emitting a laser beam and an optical path changing unit altering a traveling path of an incident beam. An objective lens, disposed on an optical path between the optical path changing unit and an optical disk, focuses the incident beam from the light source to form a light spot on the optical disk of the objective lens. The optical pickup further includes a photodetector and an detecting-correcting unit, arranged on the optical path between the optical path changing unit and the objective lens, performing at least one of detecting the thickness of the optical disk and correcting aberration caused by thickness variations of the optical disk. The objective lens includes a first transmitting portion divergently transmitting an incident beam, where the first transmitting portion is at a relatively near-axis region from an optical axis of the objective lens. A second transmitting portion transmits the incident beam, where the second transmitting portion is arranged facing the first transmitting portion. A first reflecting portion condenses and reflects the incident beam from the first transmitting portion, where the first reflecting portion is formed around the second transmitting portion. A second reflecting portion condenses and reflects the incident beam from the first reflecting portion towards the second transmitting portion, where the second reflecting portion is formed around the first transmitting portion.

Abstract translation: 光拾取器包括发射激光束的光源和改变入射光束的行进路径的光路改变单元。 设置在光路改变单元和光盘之间的光路上的物镜聚焦来自光源的入射光束，以在物镜的光盘上形成光斑。 光学拾取器还包括光电检测器和检测校正单元，其布置在光路改变单元和物镜之间的光路上，执行检测光盘的厚度和校正由厚度变化引起的像差中的至少一个 光盘。 物镜包括发射入射光束的第一透射部分，其中第一透射部分处于距离物镜的光轴的相对近轴的区域。 第二发送部分透射入射光束，其中第二透射部分布置成面对第一透射部分。 第一反射部分将来自第一透射部分的入射光束冷凝并反射，其中第一反射部分围绕第二透射部分形成。 第二反射部分将来自第一反射部分的入射光束聚集并反射到第二透射部分，其中第二反射部分围绕第一透射部分形成。

公开(公告)号：US06639889B1

公开(公告)日：2003-10-28

申请号：US09594509

申请日：2000-06-16

Applicant: Jang-hoon Yoo ,  Chong-sam Chung ,  Chul-woo Lee ,  Kun-ho Cho

Inventor： Jang-hoon Yoo ,  Chong-sam Chung ,  Chul-woo Lee ,  Kun-ho Cho

IPC: G11B700

CPC classification number: G11B7/126 ,  G11B7/127 ,  G11B7/131 ,  G11B7/1356 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: A recording/reproducing apparatus including an optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source, an objective lens having a function of focusing light emitted from the light source into the optimal light spot on an information recording surface of one of the plurality of the optical recording media, and a light detector to detect light transmitted through the objective lens after being reflected from the information recording surface of the optical recording medium on which the light spot is formed. The objective lens has an inner area, an annular lens area and an outer area such that the annular lens area divides the inner area from the outer area and has a ring shape centered at a vertex. The inner area, the annular lens area and the outer area have aspherical surface shapes to focus light transmitted through the inner area and the outer area into a single light spot by which information can be read from the information recording surface of a relatively thin first optical recording medium and scatter light transmitted through the annular lens area located between the inner area and the outer area so that information cannot be read from the information recording surface of the first optical recording medium, during reproduction of the first optical recording medium. The inner area and the annular lens area transmit light into a single light spot by which information can be read from the information recording surface of a relatively thick second optical recording medium and scatters light transmitted through the outer lens area so that information cannot be read from the information recording surface of the second optical recording medium, during reproduction of the second optical recording medium.

Abstract translation: 一种记录/再现装置，包括与多个使用不同波长的光的多个光学记录介质兼容的光学拾取器。 光拾取器包括至少一个光源，具有将从光源发射的光聚焦到多个光学记录介质之一的信息记录表面上的最佳光点中的功能的物镜，以及光检测器 在从形成有光斑的光记录介质的信息记录面反射后，检测透过物镜的光。 物镜具有内部区域，环形透镜区域和外部区域，使得环形透镜区域将内部区域与外部区域分开并且具有以顶点为中心的环形。 内部区域，环形透镜区域和外部区域具有非球面形状，以将透过内部区域和外部区域的光聚焦成单个光点，通过该单个光点可以从相对薄的第一光学信息记录表面读取信息 记录介质和透射通过位于内部区域和外部区域之间的环形透镜区域的散射光，使得在第一光学记录介质的再现期间不能从第一光学记录介质的信息记录表面读取信息。 内部区域和环形透镜区域将光透射到单个光点中，通过该单个光点可以从相对较厚的第二光学记录介质的信息记录表面读取信息，并散射透过外部透镜区域的光，从而不能从 在第二光学记录介质的再现期间，第二光学记录介质的信息记录表面。

公开(公告)号：US06259668B1

公开(公告)日：2001-07-10

申请号：US09467385

申请日：1999-12-21

Applicant: Chul-woo Lee ,  Jang-hoon Yoo

Inventor： Chul-woo Lee ,  Jang-hoon Yoo

IPC: G11B7135

CPC classification number: G11B7/1374 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: A recording/reproducing apparatus having an optical pickup device which is efficient in light use having little spherical aberration. The recording and/or reproducing apparatus includes an optical pickup having 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; and a processing unit to process an information signal to control the incident light generated by the light source, and to process the detected light from the photodetector. 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: 一种具有光学拾取装置的记录/再现装置，其具有很少的球面像差的光利用效率。 记录和/或再现装置包括具有与光盘相对设置的物镜的光学拾取器，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，中间轴区域和远轴区域 入射光的中心区域和外围区域的曲率优化为薄盘，中间区域的曲率针对厚盘优化，光源通过物镜向盘照射光; 用于检测从光盘反射的光的光检测器和设置在物镜和光源之间的光束分离器，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; 以及处理单元，处理信息信号以控制由光源产生的入射光，并处理来自光电检测器的检测光。 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：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。