公开(公告)号：US5665957A

公开(公告)日：1997-09-09

申请号：US640553

申请日：1996-05-01

Applicant: Chul-woo Lee ,  Dong-ho Shin ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Kun-ho Cho ,  Pyong-yong Seong ,  Jang-hoon Yoo ,  Yong-hoon Lee

Inventor： Chul-woo Lee ,  Dong-ho Shin ,  Kyung-hwa Rim ,  Chong-sam Chung ,  Kun-ho Cho ,  Pyong-yong Seong ,  Jang-hoon Yoo ,  Yong-hoon Lee

IPC: B29D11/00 ,  G02B3/10 ,  G02B27/58 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/09 ,  G11B7/13 ,  G11B7/135 ,  G01S1/20 ,  H01J3/14

CPC classification number: G11B7/1353 ,  B29D11/00009 ,  G02B27/58 ,  G02B3/10 ,  G11B7/0909 ,  G11B7/133 ,  G11B7/1367 ,  G11B7/1374 ,  G11B7/1381 ,  G11B7/13922 ,  G11B2007/0006 ,  G11B2007/13727 ,  G11B7/0045 ,  G11B7/005 ,  Y10S425/808

Abstract: A lens device which can be used as an objective lens in an optical pickup apparatus includes an objective lens provided along a light path facing a disc and having a predetermined effective diameter, and light controlling means provided along the light path for controlling the light in an intermediate region between near and far axes of an incident light beam, thus providing a simplified and inexpensive device for using discs of differing thickness in a single disc drive, by reducing the spherical aberration effect.

Abstract translation: 可以在光学拾取装置中用作物镜的透镜装置包括沿着光盘面向盘并具有预定有效直径的物镜，沿着光路设置的光控制装置，用于控制光 入射光束的近轴和远轴之间的中间区域，从而通过减小球面像差效应来提供在单个盘驱动器中使用不同厚度的盘的简化且便宜的装置。

公开(公告)号：US08493831B2

公开(公告)日：2013-07-23

申请号：US10897015

申请日：2004-07-23

Applicant: Ui-yol Kim ,  Tae-kyung Kim ,  Chong-sam Chung ,  Pyong-yong Seong

Inventor： Ui-yol Kim ,  Tae-kyung Kim ,  Chong-sam Chung ,  Pyong-yong Seong

IPC: G11B7/00

CPC classification number: G11B7/1353 ,  G11B7/1275 ,  G11B7/1374 ,  G11B2007/0006

Abstract: A compatible optical pickup including an optical unit and a focusing unit. The optical unit emits a short wavelength light for high-density recording media and a long wavelength light for low-density recording media, directs the short and long wavelength light to a recording medium, receives lights reflected by the recording medium, and detects an information reproduction signal and/or an error signal from the received lights. The focusing unit focuses light received from the optical unit to form a light spot on a recording surface of the recording medium, diffracts the short wavelength light into a zero order light and the long wavelength light into a second order light to be used as effective light for recording and/or reproduction. Thus, a high-density recording medium and a low-density recording medium having different thicknesses can be compatibly used.

Abstract translation: 一种兼容的光学拾取器，包括光学单元和聚焦单元。 光学单元发射用于高密度记录介质的短波长光和用于低密度记录介质的长波长光，将短波长和长波长光引导到记录介质，接收由记录介质反射的光，并检测信息 再现信号和/或来自接收到的光的误差信号。 聚焦单元将从光学单元接收的光聚焦在记录介质的记录表面上形成光点，将短波长的光衍射成零级光，将长波长的光衍射成二阶光，作为有效光 用于记录和/或再现。 因此，可以兼容使用具有不同厚度的高密度记录介质和低密度记录介质。

公开(公告)号：US07453656B2

公开(公告)日：2008-11-18

申请号：US11385739

申请日：2006-03-22

Applicant: Dae-jong Jang ,  Byung-youn Song ,  Young-bin Lee ,  Byung-ryul Ryoo ,  Pyong-yong Seong ,  Young-won Lee

Inventor： Dae-jong Jang ,  Byung-youn Song ,  Young-bin Lee ,  Byung-ryul Ryoo ,  Pyong-yong Seong ,  Young-won Lee

IPC: G02B7/02

CPC classification number: G11B7/0933 ,  G11B7/0932 ,  G11B7/0935 ,  G11B7/0956

Abstract: An optical recording and/or reproducing apparatus with an optical pickup actuator having high thrust. The optical pickup actuator may include a lens holder which holds an objective lens and is movably supported by a supporting unit, and a magnetic driving unit which drives the lens holder in a focusing direction, a tracking direction, and/or a tilting direction. The magnetic driving unit includes a surface-triple pole magnet portion and a coil portion. The surface-triple pole magnet portion has a plurality of polarized, i.e., differently magnetized, areas formed by facing sides of two magnets among three magnets. The coil portion includes tracking coils and tilt coils disposed to interact with the polarized areas of the surface-triple pole magnet portion and a focusing coil disposed to interact with a non-polarized area of the surface-triple pole magnet portion.

Abstract translation: 具有高推力的光学拾音器致动器的光学记录和/或再现装置。 光拾取器致动器可以包括保持物镜并由支撑单元可移动地支撑的透镜保持器，以及在聚焦方向，跟踪方向和/或倾斜方向上驱动透镜保持器的磁性驱动单元。 磁驱动单元包括表面三极磁体部分和线圈部分。 表面三极磁体部分具有由三个磁体中的两个磁体的相对侧面形成的多个极化的，即不同的磁化区域。 线圈部分包括跟踪线圈和设置成与表面 - 三极磁体部分的偏振区域相互作用的倾斜线圈和设置成与表面三极磁铁部分的非偏振区域相互作用的聚焦线圈。

公开(公告)号：US07355953B2

公开(公告)日：2008-04-08

申请号：US10686785

申请日：2003-10-17

Applicant: Ui-yol Kim ,  Byung-ryul Ryoo ,  Pyong-yong Seong ,  Myoung-cheol Cho ,  Kyung-ui Park

Inventor： Ui-yol Kim ,  Byung-ryul Ryoo ,  Pyong-yong Seong ,  Myoung-cheol Cho ,  Kyung-ui Park

IPC: G11B7/125

CPC classification number: G11B7/1395 ,  G11B7/1263 ,  G11B7/1353 ,  G11B2007/13727

Abstract: An optical pickup includes a light source which emits light, a grating which separates a portion of the light emitted from the light source, a reflecting member which reflects another portion of the light emitted from the light source, a monitoring photodetector disposed on a traveling path of the light reflected from the reflecting member and which measures the reflected light, an optical path changer which changes an optical path of the light separated by the grating, an objective lens light which condenses the light the optical path of which is changed onto a disc, and a signal detecting photodetector which receives the light reflected from the disc.

Abstract translation: 光拾取器包括发光的光源，分离从光源发出的光的一部分的光栅，反射从光源发射的光的另一部分的反射部件，设置在行进路径上的监视光电检测器 从反射构件反射并测量反射光的光，改变由光栅分离的光的光路的光路改变器，将其光路改变为光盘的光会聚的物镜光 以及接收从盘反射的光的信号检测光电检测器。

公开(公告)号：US07068933B2

公开(公告)日：2006-06-27

申请号：US10197329

申请日：2002-07-18

Applicant: Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

Inventor： Pyong-yong Seong ,  Jong-koog Lee ,  Kun-soo Kim ,  Yong-jun Cho ,  Sung-du Kwon

IPC: H04B10/00

CPC classification number: G11B7/1263 ,  G01J1/44 ,  G11B2007/0006

Abstract: An apparatus and method for detecting beam power generated by a plurality of light sources, using a single device. The apparatus includes a light-receiving unit that receives the beam power generated by one of a plurality of light sources, and an amplifying unit that selects a gain, amplifies the beam power received by the light-receiving unit according to the selected gain, and outputs the beam power amplified as a detected beam power. According to the apparatus and method, received beam power (or amplification gain) is amplified by a gain determined according to the characteristics of the respective light sources. Thus, it is possible to provide the detected beam power in consideration of a sufficient dynamic range for the each light source, thereby realizing effective APC.

公开(公告)号：US07016291B2

公开(公告)日：2006-03-21

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: G11B7/00

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.

公开(公告)号：US20050185532A1

公开(公告)日：2005-08-25

申请号：US11043453

申请日：2005-01-27

Applicant: Hyung-joo Kang ,  Byung-youn Song ,  Pyong-yong Seong ,  Dae-jong Jang

Inventor： Hyung-joo Kang ,  Byung-youn Song ,  Pyong-yong Seong ,  Dae-jong Jang

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

CPC classification number: G11B7/0935 ,  G11B7/093 ,  G11B7/0933 ,  G11B7/0956

Abstract: A magnetic circuit, an optical pickup actuator, an optical recording and/or reproducing apparatus using the magnetic circuit, and method of the same, wherein the magnetic circuit includes a plurality of focus coil units each of which includes a first focus coil and a second focus coil, and a magnet including a plurality of magnet portions which interact with the plurality of focus coil units and each of which is polarized in a direction opposite to adjacent magnet portions thereamong. Here, electromagnetic forces act on the first and second focus coils in each focus coil unit in a same direction in response to focus driving signals and in opposite directions in response to tilt driving signals, with the first and second focus coils in each focus coil unit have different effective coil lengths.

Abstract translation: 磁路，光拾取器致动器，使用磁路的光学记录和/或再现装置及其方法，其中磁路包括多个聚焦线圈单元，每个聚焦线圈单元包括第一聚焦线圈和第二聚焦线圈 聚焦线圈和包括与多个聚焦线圈单元相互作用的多个磁体部分的磁体，并且每个磁体在与其相邻的磁体部分相反的方向上被极化。 这里，响应于倾斜驱动信号，响应于聚焦驱动信号和相反方向，电磁力以相同的方向在每个聚焦线圈单元中的第一和第二聚焦线圈上作用，第一和第二聚焦线圈在每个聚焦线圈单元 具有不同的有效线圈长度。

公开(公告)号：US20050099920A1

公开(公告)日：2005-05-12

申请号：US10937255

申请日：2004-09-10

Applicant: Won-ik Cho ,  Pyong-yong Seong ,  Dong-ryeol Lee ,  Ki-bok Kim

Inventor： Won-ik Cho ,  Pyong-yong Seong ,  Dong-ryeol Lee ,  Ki-bok Kim

IPC: G11B7/00 ,  G11B7/125 ,  G11B33/14 ,  H01L23/34 ,  H01L23/38

CPC classification number: G11B7/127 ,  H01L23/34 ,  H01L23/38 ,  H01L2924/0002 ,  H01L2924/00

Abstract: A heat source having a device emitting heat, a case protecting and supporting the device, and a thermoelectric element absorbing the heat emitted from the device and dissipating the heat to an outside.

Abstract translation: 具有发热装置的热源，保护和支撑装置的壳体，以及吸收从装置发出的热并将热量散发到外部的热电元件。

公开(公告)号：US20050002303A1

公开(公告)日：2005-01-06

申请号：US10751647

申请日：2004-01-06

Applicant: Sung-du Kwon ,  Jun-hyuk Lee ,  Pyong-yong Seong ,  Hyun-cheal Bang ,  Jong-koog Lee ,  Yong-jun Cho

Inventor： Sung-du Kwon ,  Jun-hyuk Lee ,  Pyong-yong Seong ,  Hyun-cheal Bang ,  Jong-koog Lee ,  Yong-jun Cho

IPC: G11B7/00 ,  G11B7/125 ,  H01S5/06

CPC classification number: G11B7/1263

Abstract: In order to improve the frequency characteristic of a laser power monitor device and the precision of laser power control when low-speed recording is performed, there is provided a laser power monitor device for an optical recording and/or reproducing apparatus, the laser power monitor device including a photo diode unit to receive part of a light emitted from a laser diode and output a current proportional to optical power, and a monitor circuit to receive the current output from the photo diode unit, convert the received current into a voltage, and outputs the voltage to an automatic laser power control circuit, and the photo diode unit includes a plurality of photo diodes connected to the monitor circuit to supply current to the monitor circuit. The laser power monitor device further includes a switch unit, wherein the switch unit is located between the photo diode unit and the monitor circuit to receive a signal on a current recording speed and switch so that the number of photo diodes supplying current to the monitor circuit is reduced as the recording speed is increased.

Abstract translation: 为了提高激光功率监视装置的频率特性和进行低速记录时的激光功率控制的精度，提供了一种用于光学记录和/或再现装置的激光功率监视装置，激光功率监视器 该装置包括：光电二极管单元，用于接收从激光二极管发射的一部分光并输出与​​光功率成比例的电流;以及监测电路，用于接收来自光电二极管单元的电流输出，将接收的电流转换成电压; 将电压输出到自动激光功率控制电路，并且光电二极管单元包括连接到监视器电路的多个光电二极管，以向监控电路提供电流。 所述激光功率监视装置还包括开关单元，其中所述开关单元位于所述光电二极管单元和所述监视器电路之间，以接收当前记录速度的信号并进行切换，使得向所述监视器电路提供电流的光电二极管的数量 随着记录速度的增加而减小。

公开(公告)号：US06791933B1

公开(公告)日：2004-09-14

申请号：US09516507

申请日：2000-03-01

Applicant: Jang Hoon Yoo ,  Chul Woo Lee ,  Chong Sam Chung ,  Pyong Yong Seong ,  Kun Ho Cho ,  Hyun Seob Choi ,  Yong Hoon Lee ,  Tae Kyung Kim ,  No Kyong Park

Inventor： Jang Hoon Yoo ,  Chul Woo Lee ,  Chong Sam Chung ,  Pyong Yong Seong ,  Kun Ho Cho ,  Hyun Seob Choi ,  Yong Hoon Lee ,  Tae Kyung Kim ,  No Kyong Park

IPC: G11B712

CPC classification number: G11B7/1374 ,  G02B19/0028 ,  G02B19/0057 ,  G02B27/0944 ,  G11B7/127 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1356 ,  G11B7/1367 ,  G11B7/139 ,  G11B7/13922 ,  G11B2007/0006

Abstract: An optical pickup apparatus having compatibility with a recodable compact disk (CD-R) and a digital video disk (DVD), which uses a wavelength of one of a first light beam and a second light beam according to the recording medium to be used. In the optical pickup apparatus, laser light sources emit a first light beam having a relatively shorter wavelength for the. DVD and a second light beam having a longer wavelength for the CD-R, respectively. An objective lens has a predetermined focal length in accordance with the position of an information recording surface in the DVD. An optical path control unit controls the path of light beams so that the light beam emitted from one of the laser light sources is directed to the objective lens and the light output from the objective lens is directed to the optical detection unit. A phase shift unit which is located between the optical path control unit and the objective lens, shifts the phase of the second light proceeding from the optical path control unit to the objective lens, to thereby reduce the size of a beam spot which is formed on a position of the information recording surface in the CD-R.

Abstract translation: 具有与使用根据要使用的记录介质的第一光束和第二光束中的一个的波长的可重写光盘（CD-R）和数字视频盘（DVD）兼容的光学拾取装置。 在光学拾取装置中，激光源发射具有相对较短波长的第一光束。 DVD和分别具有较长波长的CD-R的第二光束。 根据DVD中的信息记录表面的位置，物镜具有预定焦距。 光路控制单元控制光束的路径，使得从一个激光源发射的光束被引导到物镜，并且从物镜输出的光被引导到光学检测单元。 位于光路控制单元和物镜之间的相移单元将从光路控制单元向物镜移动的第二光的相位偏移，从而减小形成在光路控制单元 信息记录表面在CD-R中的位置。