公开(公告)号：US07164626B2

公开(公告)日：2007-01-16

申请号：US10751114

申请日：2004-01-05

Applicant: Dong-ryeol Lee ,  Pyong-yong Seong ,  Kun-soo Kim

Inventor： Dong-ryeol Lee ,  Pyong-yong Seong ,  Kun-soo Kim

IPC: G11B7/00

CPC classification number: G11B7/1365 ,  G11B7/1275 ,  G11B7/13922 ,  G11B7/1395 ,  G11B2007/0006

Abstract: A compatible type optical pickup using a wedge type beam splitter that can record and/or reproduce information on/from optical recording media having different formats. The compatible type optical pickup includes: a first light source that generates and emits a first light beam of a predetermined wavelength; a second light source that generates and emits a second light beam having a different wavelength from that of the first light beam; a wedge type beam splitter disposed in an optical path between the first and second light sources, which changes the traveling paths of the first and second light beams to allow the first and second light beams to travel along the same optical path and minimizes aberrations; a main beam splitter disposed in an optical path between the wedge type beam splitter and an optical recording medium, which changes the traveling paths of incident light beams; an objective lens that focuses the first and second light beams entered via the main beam splitter onto the optical recording medium; and a main photodetector that receives the first and second light beams reflected from the optical recording medium detects an information signal and an error signal.

Abstract translation: 一种使用楔型分光器的兼容型光学拾取器，其可以在具有不同格式的光学记录介质上记录和/或再现信息。 兼容型光学拾取器包括：产生并发射预定波长的第一光束的第一光源; 产生和发射具有与第一光束的波长不同的波长的第二光束的第二光源; 设置在第一和第二光源之间的光路中的楔形分束器，其改变第一和第二光束的行进路径，以允许第一和第二光束沿着相同的光路行进并使像差最小化; 设置在楔形分束器和光学记录介质之间的光路中的主分束器，其改变入射光束的行进路径; 将通过主分束器进入的第一和第二光束聚焦在光学记录介质上的物镜; 并且接收从光记录介质反射的第一和第二光束的主光电检测器检测信息信号和误差信号。

公开(公告)号：US20050249077A1

公开(公告)日：2005-11-10

申请号：US11089535

申请日：2005-03-25

Applicant: Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

Inventor： Byung-youn Song ,  Jong-koog Lee ,  Dong-ryeol Lee ,  Pyong-yong Seong ,  Kyung-ui Park ,  Dong-won Kim

IPC: G11B7/004 ,  G11B7/00 ,  G11B7/007 ,  G11B7/085 ,  G11B7/09 ,  G11B7/095

CPC classification number: G11B7/0956

Abstract: A method and apparatus for compensating tilt. The tilt compensation method includes: obtaining one of a jitter best, an RF envelope, and a focus DC offset (FODC) from a detection signal of the ROM data region and determining whether the obtained value is within a tolerance range; and obtaining an initial skew compensation value using the obtained value when the obtained value is within the tolerance, changing the magnitude of current applied to an actuator designed to perform driving in at least three-axis directions to drive an objective lens of an optical pickup assembly in a radial tilt direction when the obtained value is not within the tolerance range, and repeating the obtaining of one of the jitter best, the RF envelope, and the FODC and changing the magnitude of the current until the obtained value is within the tolerance range.

Abstract translation: 一种用于补偿倾斜的方法和装置。 倾斜补偿方法包括：从ROM数据区域的检测信号中获得最佳抖动，RF包络和聚焦DC偏移（FODC）中的一个，并确定所获得的值是否在公差范围内; 以及当所获得的值在公差内时，使用所获得的值获得初始偏移补偿值，改变施加到设计成在至少三个轴方向上执行驱动的致动器的电流的大小，以驱动光学拾取组件的物镜 当获得的值不在公差范围内时，在径向倾斜方向上，并且重复获得最佳抖动之一，RF包络和FODC，并且改变电流的幅度直到获得的值在容许范围内 。

公开(公告)号：US20050018584A1

公开(公告)日：2005-01-27

申请号：US10869096

申请日：2004-06-17

Applicant: Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

Inventor： Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

IPC: G02B5/18 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC classification number: G11B7/1353 ,  G02B5/1876 ,  G11B7/127 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical recording and pickup head having a flat plate lens of a staircase type diffraction grating structure is compatible with a DVD and a CD-RW. The optical recording and pickup head includes a first optical source for emitting first light having a relatively short wavelength, a second optical source for emitting second light having a relatively long wavelength, a photo detector, an objective lens for focusing the light emitted from the first and second optical sources on the information recording surfaces of the optical discs, respectively, an optical path altering unit for transferring the light emitted from the first and second optical sources to the objective lens and transferring the first and second light reflected from the information recording surfaces of the plurality of discs to the photo detector, respectively, and a flat plate lens for substantially totally transmitting the first light proceeding from the optical path altering unit to the objective lens and diffracting the second light proceeding from the optical path altering unit to the optical axis of the objective lens.

Abstract translation: 具有楼梯型衍射光栅结构的平板透镜的光学记录和拾取头与DVD和CD-RW兼容。 光学记录和拾取头包括用于发射具有较短波长的第一光的第一光源，用于发射具有较长波长的第二光的第二光源，光检测器，用于将从第一光发射的光聚焦的物镜 和第二光源分别设置在光盘的信息记录表面上，光路改变单元，用于将从第一和第二光源发射的光转移到物镜，并传送从信息记录表面反射的第一和第二光 以及平板透镜，用于将从光路改变单元前进的第一光基本上全部透射到物镜，并将从光路改变单元行进的第二光衍射到光学检测器 物镜的轴线。

公开(公告)号：US06765857B2

公开(公告)日：2004-07-20

申请号：US10178528

申请日：2002-06-25

Applicant: Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

Inventor： Jang-Hoon Yoo ,  Chul-Woo Lee ,  Kun-Ho Cho ,  Pyong-Yong Seong

IPC: G11B700

CPC classification number: G11B7/1353 ,  G02B5/1876 ,  G11B7/127 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/1378 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727

Abstract: An optical recording and pickup head having a flat plate lens of a staircase type diffraction grating structure is compatible with a DVD and a CD-RW. The optical recording and pickup head includes a first optical source for emitting first light having a relatively short wavelength, a second optical source for emitting second light having a relatively long wavelength, a photo detector, an objective lens for focusing the light emitted from the first and second optical sources on the information recording surfaces of the optical discs, respectively, an optical path altering unit for transferring the light emitted from the first and second optical sources to the objective lens and transferring the first and second light reflected from the information recording surfaces of the plurality of discs to the photo detector, respectively, and a flat plate lens for substantially totally transmitting the first light proceeding from the optical path altering unit to the objective lens and diffracting the second light proceeding from the optical path altering unit to the optical axis of the objective lens.

Abstract translation: 具有楼梯型衍射光栅结构的平板透镜的光学记录和拾取头与DVD和CD-RW兼容。 光学记录和拾取头包括用于发射具有较短波长的第一光的第一光源，用于发射具有较长波长的第二光的第二光源，光检测器，用于将从第一光发射的光聚焦的物镜 和第二光源分别在光盘的信息记录表面上，光路改变单元，用于将从第一和第二光源发射的光转移到物镜，并传送从信息记录表面反射的第一和第二光 以及平板透镜，用于将从光路改变单元前进的第一光基本上全部透射到物镜，并将从光路改变单元行进的第二光衍射到光学检测器 物镜的轴线。

公开(公告)号：US06381207B1

公开(公告)日：2002-04-30

申请号：US09410627

申请日：1999-10-01

Applicant: Byung-ryul Ryoo ,  Pyong-yong Seong ,  Seok-jung Kim ,  Yong-ki Son ,  Tae-kyung Kim ,  Yong-jae Lee ,  Jang-hoon Yoo

Inventor： Byung-ryul Ryoo ,  Pyong-yong Seong ,  Seok-jung Kim ,  Yong-ki Son ,  Tae-kyung Kim ,  Yong-jae Lee ,  Jang-hoon Yoo

IPC: G11B3302

CPC classification number: G11B7/22

Abstract: An optical pickup of an optical disk drive. The optical pickup includes a laser beam source for generating a laser beam; a pickup base having an objective lens for projecting the laser beam generated from the laser beam source to an information recording surface of an optical disk; a variation adjusting plate which is movably disposed on the pickup base to be moved in vertical and lateral directions, and has a rotational hole formed at a central portion thereof; and a rotation adjusting plate including a rotational section having a predetermined curvature which is inserted into the rotational hole of the variation adjusting plate, and with a laser beam source fixed therein, the rotation adjusting plate being rotated with respect to the variation adjusting plate. An optical system including a collimating lens and a reflective mirror is fixed to the pickup base. Since the light path with respect to the field angle and the beam shift is adjusted by moving and/or rotating the light emitting point of the laser beam source with respect to the light axis of the collimating lens, the size of the optical pickup becomes smaller. Further, since the collimating lens and the light source are fixed to the respective structures, the light path is controlled regardless of the focal distance of the collimating lens. Accordingly, if the focal distance of the collimating lens has to be lengthened, the beam shift and the field angle can be precisely adjusted without enlarging the optical pickup.

Abstract translation: 光盘驱动器的光学拾取器。 光学拾取器包括用于产生激光束的激光束源; 具有用于将从激光束源产生的激光束投射到光盘的信息记录表面的物镜的拾取器基座; 可移动地设置在拾取器基座上以在垂直和横向方向上移动的变化调节板，并且具有形成在其中心部分的旋转孔; 以及旋转调节板，其包括插入到变化调节板的旋转孔中的具有预定曲率的旋转部分和固定在其中的激光束源，旋转调节板相对于变化调节板旋转。 包括准直透镜和反射镜的光学系统固定在拾取器基座上。 由于通过相对于准直透镜的光轴移动和/或旋转激光束源的发光点来调节相对于场角和光束偏移的光路，所以光拾取器的尺寸变小 。 此外，由于准直透镜和光源被固定到各个结构，所以不管准直透镜的焦距如何，都可以控制光路。 因此，如果准直透镜的焦距必须延长，则可以在不放大光学拾取器的情况下精确地调整光束偏移和场角。

公开(公告)号：US06282161B1

公开(公告)日：2001-08-28

申请号：US09369127

申请日：1999-08-05

Applicant: Yong-ki Son ,  Pyong-yong Seong ,  Byung-ryul Ryoo ,  Seok-jung Kim ,  Joong-eon Seo ,  In-wook Hwang ,  Young-sun Seo

Inventor： Yong-ki Son ,  Pyong-yong Seong ,  Byung-ryul Ryoo ,  Seok-jung Kim ,  Joong-eon Seo ,  In-wook Hwang ,  Young-sun Seo

IPC: G11B390

CPC classification number: G11B7/0956

Abstract: An optical recording and reproducing apparatus for adjusting a tilt of an optical pickup in accordance with an amount of jitter of a reproduction signal, a tilt adjusting method therefor, and a recording control method. The optical recording and reproducing apparatus includes an optical pickup having an object lens, a tilt adjusting unit for adjusting a tilt angle of the object lens, a jitter detecting unit for detecting an amount of jitter of a reproducing signal generated by the optical pickup from a disk, and a tilt controlling unit for minimizing the amount of jitter by feeding the amount of jitter detected by the jitter detecting unit back to the tilt adjusting unit. According to the optical recording and reproducing apparatus, there is no need for a space in which a displacement sensor detecting the tilt angle of the optical pickup faces the disk.

Abstract translation: 一种用于根据再现信号的抖动量，其倾斜调整方法和记录控制方法来调整光学拾取器的倾斜的光学记录和再现装置。 光学记录和再现装置包括具有物镜的光学拾取器，用于调节物镜的倾斜角度的倾斜调节单元，用于检测由光学拾取器产生的再现信号的抖动量的抖动检测单元， 盘和倾斜控制单元，用于通过将由抖动检测单元检测到的抖动量馈送回倾斜调节单元来最小化抖动量。 根据光学记录和再现装置，不需要用于检测光学拾取器的倾斜角度的位移传感器面对盘的空间。

公开(公告)号：US06266315B1

公开(公告)日：2001-07-24

申请号：US09196111

申请日：1998-11-20

Applicant: Chul-Woo Lee ,  Chong-Sam Chung ,  Yong-Moon Lee ,  Cheol-Sung Yeon ,  Joong-Eon Seo ,  Young-Min Cheong ,  Dong-Ho Shin ,  Kun-Mo Cho ,  Pyong-Yong Seong ,  Jang-Hoon Yoo

Inventor： Chul-Woo Lee ,  Chong-Sam Chung ,  Yong-Moon Lee ,  Cheol-Sung Yeon ,  Joong-Eon Seo ,  Young-Min Cheong ,  Dong-Ho Shin ,  Kun-Mo Cho ,  Pyong-Yong Seong ,  Jang-Hoon Yoo

IPC: G11B700

CPC classification number: G11B7/1387 ,  G11B7/08576 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/122 ,  G11B7/1374 ,  G11B7/22 ,  G11B7/24 ,  G11B11/10547 ,  G11B11/10554 ,  G11B11/1058 ,  G11B11/10584 ,  G11B2007/13725

Abstract: An optical focusing system which uses a light beam emitted from a light source, includes a refractive surface on one side of the optical focusing system and having a first radius of curvature, a first reflection surface on the above one side, surrounding the refractive surface and having a second radius of curvature being different from the first radius of curvature, a transparent beam focusing surface on the other side of the optical focusing system, and a second reflection surface on the above other side and surrounding the beam focusing surface. The refractive surface refracts an incident light beam, the second reflection surface reflects a light beam refracted by the refractive surface toward the first reflection surface, and the first reflection surface focuses a laser light beam reflected from the second reflection surface on the beam focusing surface as a focused beam spot. The optical focusing system can be used in an optical pickup. The optical pickup uses the optical focusing system to generate, from a light beam e.g. laser light emitted from a light source, a beam spot used for recording or reading information to a recording medium. The optical pickup uses a near field effect provided by an optical focusing system according to the present invention, to allow a superior density of recording or reading. Further, the optical focusing system according to the invention can use a light beam having a beam diameter smaller than that of the laser beam used for an existing optical focusing system for forming a near field. Thus, the optical pickup according to the invention can record or read information on an optical disk having a surface recording density of 10 Gbit/inch2 or more. Even if an incident light beam inclination occurs due to movement of the disk or the optical pickup, information can be recorded on or read from a disk accurately. Also, the assembly of the optical focusing system and the adjustment of the assembled optical focusing system are easily performed.

公开(公告)号：US6088170A

公开(公告)日：2000-07-11

申请号：US14625

申请日：1998-01-28

Applicant: Chul-Woo Lee ,  Pyong-Yong Seong ,  Tae-Kyung Kim

Inventor： Chul-Woo Lee ,  Pyong-Yong Seong ,  Tae-Kyung Kim

IPC: G02B27/09 ,  G11B7/135 ,  H01S3/00 ,  H01S5/00 ,  H01S5/022 ,  G02B13/18 ,  G11B7/00

CPC classification number: G02B19/0085 ,  G02B19/0014 ,  G02B19/0052 ,  G02B27/09 ,  G02B27/0966 ,  G11B7/1365 ,  G11B7/1372 ,  G11B7/1398 ,  H01S5/005

Abstract: A beam-shaping optical system includes a light source, a plurality of plates, and a cylindrical lens disposed between the light source and the plurality of plates, wherein the plurality of plates and the cylindrical lens have an optical feature in which the light output from the light source is beam-shaped to have a desired shape in the cross-section of the light beam. An optical pickup using the beam-shaped light which is diverged by the optical system can obtain convergence light reflected from an optical storage medium. Since the convergence light transmitted through only one plate has astigmatism as it is, a separate lens is not used for light detection and uses a photo detector adapted for employing an astigmatic method, to perform a focussing servo.

Abstract translation: 光束整形光学系统包括光源，多个板和设置在光源和多个板之间的柱面透镜，其中多个板和柱面透镜具有光学特征，其中从 光源在光束的横截面中具有波束形状以具有期望的形状。 使用由光学系统分散的束状光的光学拾取器可以获得从光学存储介质反射的会聚光。 由于仅通过一个板透射的会聚光像散像一样，所以不使用单独的透镜来进行光检测，并且使用适于采用散光法的光检测器来执行聚焦伺服。

公开(公告)号：US6081497A

公开(公告)日：2000-06-27

申请号：US8315

申请日：1998-01-20

Applicant: Pyong-Yong Seong

Inventor： Pyong-Yong Seong

IPC: G11B7/08 ,  G11B7/00 ,  G11B7/125 ,  G11B7/135

CPC classification number: G11B7/1356 ,  G11B7/127 ,  G11B7/135 ,  G11B7/1362 ,  G11B7/1365 ,  G11B2007/0006

Abstract: An optical pickup is used for two kinds of disks, each of which uses a different wavelength of light. The optical pickup includes first and second light sources for individually emitting first and second light beams which have a respectively different wavelength from each other and are identically linearly polarized, a polarizing beam splitter, a quarter-wave plate and a total reflection element. The polarizing beam splitter, the quarterwave plate and the total reflection element are arranged so that a first optical path is formed in which the first light beam emitted from the first light source proceeds toward the loaded disk via the polarizing beam splitter and the objective lens and the first light beam reflected from the loaded disk proceeds toward the first light source via the objective lens and the polarizing beam splitter, and so that a second optical path is formed in which the second light beam emitted from the second light source proceeds toward the loaded disk via the polarizing beam splitter, the quarter-wave plate, the total reflection element, the quarter-wave plate, the polarizing beam splitter and the objective lens and the second light beam reflected from the loaded disk proceeds toward the second light source via the objective lens, the polarizing beam splitter, the quarter-wave plate, the total reflection element, the quarter-wave plate and the polarizing beam splitter. Thus, the optical pickup can be made compact and at a low cost. Also, the polarizing beam splitter, the quarter-wave plate and the total reflection element have respectively high light utilization efficiencies, which are appropriate for a recording and reproducing optical pickup.

Abstract translation: 光拾取器用于两种光盘，每种光盘使用不同波长的光。 光学拾取器包括第一和第二光源，用于分别发射具有彼此不同的波长并且相同线性偏振的第一和第二光束，偏振分束器，四分之一波片和全反射元件。 偏振分束器，四分之一波片和全反射元件被布置成使得形成第一光路，其中从第一光源发射的第一光束经由偏振分束器和物镜朝向装载的光盘进行， 从装载的光盘反射的第一光束经由物镜和偏振光束分离器朝向第一光源进行，并且形成第二光路，其中从第二光源发射的第二光束朝向负载 通过偏振分束器，四分之一波片，全反射元件，四分之一波片，偏振分束器和物镜以及从加载盘反射的第二光束经由 物镜，偏振分束器，四分之一波片，全反射元件，四分之一波片和偏振光 分离器 因此，可以使光拾取器紧凑并且成本低廉。 此外，偏振光束分离器，四分之一波片和全反射元件分别具有适用于记录和再现光学拾取器的高的光利用效率。

公开(公告)号：US5594714A

公开(公告)日：1997-01-14

申请号：US366255

申请日：1994-12-29

Applicant: Chul-woo Lee ,  Kyung-hwa Rim ,  Pyong-yong Seong ,  Chong-sam Chung

Inventor： Chul-woo Lee ,  Kyung-hwa Rim ,  Pyong-yong Seong ,  Chong-sam Chung

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

CPC classification number: G11B7/131 ,  G11B7/0908 ,  G11B7/0917 ,  G11B7/0943

Abstract: In an optical pickup, a focus error detector for detecting a focus error of an objective lens for an optical disk includes a focusing lens for focusing the reflected light of the optical disk, a diffraction optical device for diffracting the reflected light focused by the focusing lens into two light rays, two bi-segmented photo-detectors for receiving the two split light rays, respectively, and a circuit for outputting a desired focus error signal from the signal detected from the photo-detectors. The circuit outputs a pure focus error signal without errors created by the deviation of the light amount in the photo-detectors due to the tilt or shift of the reflected light, thereby contributing to the stable operation and miniaturization of the optical pickup.

Abstract translation: 在光拾取器中，用于检测光盘的物镜的聚焦误差的聚焦误差检测器包括：用于聚焦光盘的反射光的聚焦透镜;用于衍射由聚焦透镜聚焦的反射光的衍射光学装置 分别用于接收两个分开的光线的两个双段光电检测器和用于从从光电检测器检测的信号中输出所需的聚焦误差信号的电路。 由于反射光的倾斜或偏移，电路输出纯聚焦误差信号，而不会由于光检测器中光量的偏差而产生误差，从而有助于光拾取器的稳定操作和小型化。