公开(公告)号：US06295255B1

公开(公告)日：2001-09-25

申请号：US09315989

申请日：1999-05-21

Applicant: Young-sun Seo ,  Han-kook Choi ,  Pyong-yong Seong ,  In-sik Park ,  Hee-deuk Park ,  Young-min Cheong ,  Dong-ho Shin

Inventor： Young-sun Seo ,  Han-kook Choi ,  Pyong-yong Seong ,  In-sik Park ,  Hee-deuk Park ,  Young-min Cheong ,  Dong-ho Shin

IPC: G11B700

CPC classification number: G11B7/1362 ,  G11B7/0932 ,  G11B7/0935 ,  G11B7/0956

Abstract: An optical pickup includes a rotary block rotatably installed on a fixed base; a holder integrally coupled to the rotary block; a bobbin supported by a wires of the holder to be movable; a base plate fixed to the fixed base and placed between the rotary block and the bobbin; an objective lens mounted in the bobbin, for focusing an incident light to form a spot of light on a recording medium; a focusing coil and tracking coils installed in the bobbin, serving as a current flow path for focusing and tracking operations; first magnets and first inner and outer yokes installed in the base plate, facing the focusing coil and the tracking coils, for producing magnetic fields perpendicular to the current flowing through the focusing coil and the tracking coils to produce an electromagnetic force for driving the bobbin; a fixed optical system for irradiating light toward the recording medium and receiving the light reflected by the recording medium and then passed through the objective lens; a reflecting mirror for changing the traveling path of the incident light, the reflecting mirror installed in the rotary block to be arranged between the objective lens and the fixed optical system; tilt coils serving as a current flow path, the tilt coils installed at both sides of the rotary block; and second magnets and second inner and outer yokes installed facing the tilt coils, for producing magnetic fields perpendicular to the current flowing through the tilt coils to produce an electromagnetic force for rotating the rotary block. Therefore, the tilt of the optical axis of the light incident onto and reflected by an optical disk through the reflecting mirror and the objective lens can be adjusted according to the tilt of the recording medium, such that the light is perpendicularly incident onto and reflected by the recording medium all the time.

Abstract translation: 光学拾取器包括可旋转地安装在固定基座上的旋转块; 一体地联接到所述旋转块的保持器; 由保持器的电线支撑的可绕动的线轴; 固定在所述固定基座上并设置在所述旋转块和所述筒管之间的基板; 安装在筒管中的物镜，用于聚焦入射光以在记录介质上形成光斑; 安装在筒管中的聚焦线圈和跟踪线圈，用作用于聚焦和跟踪操作的电流流动路径; 第一磁体和安装在基板中的面对聚焦线圈和跟踪线圈的第一内外轭，用于产生垂直于流过聚焦线圈和跟踪线圈的电流的磁场，以产生用于驱动线轴的电磁力; 用于向记录介质照射光并接收由记录介质反射的光然后通过物镜的固定光学系统; 用于改变入射光的行进路径的反射镜，安装在旋转块中以设置在物镜和固定光学系统之间的反射镜; 倾斜线圈用作电流流路，倾斜线圈安装在旋转块的两侧; 并且第二磁体和第二内外轭安装成面对倾斜线圈，用于产生垂直于流过倾斜线圈的电流的磁场，以产生用于旋转旋转块的电磁力。 因此，可以根据记录介质的倾斜度，通过反射镜和物镜入射到光盘并由其反射的光的光轴的倾斜，使得光垂直入射到其上并由 记录介质。

公开(公告)号：US06243216B1

公开(公告)日：2001-06-05

申请号：US08508250

申请日：1995-07-27

Applicant: Jang-hoon Yoo ,  Pyong-yong Seong

Inventor： Jang-hoon Yoo ,  Pyong-yong Seong

IPC: G02B904

CPC classification number: G11B7/128 ,  G02F1/0102 ,  G02F1/0311 ,  G02F1/11

Abstract: A fast responding optical modulating device for a high-density recording using in an optical pickup includes a light source, an optical modulator and a pair of lenses. The pair of lenses are so arranged that the distance between the lenses is shorter than the sum of each focal length of the lenses. The device can adjust an optical spot size at the center of the optical modulator by changing the position of the lenses without altering the whole length between the light source and optical modulator. Therefore, the device can increase the rise time as desired and the optical efficiency in optical modulation for high-density recording which uses a short wavelength light source, and moreover, has an effect of simplifying the high-density recording.

Abstract translation: 用于在光学拾取器中使用的高密度记录的快速响应光学调制装置包括光源，光学调制器和一对透镜。 这对透镜被布置成使得透镜之间的距离比透镜的每个焦距的总和短。 该装置可以通过改变透镜的位置而不改变光源和光调制器之间的整个长度来调节光调制器中心处的光点尺寸。 因此，该装置可以根据需要增加上升时间和使用短波长光源的高密度记录的光学调制中的光学效率，此外，具有简化高密度记录的效果。

公开(公告)号：US07636286B2

公开(公告)日：2009-12-22

申请号：US10792917

申请日：2004-03-05

Applicant: Hong-kyu Lee ,  Hee-dong Kim ,  Pyong-yong Seong

Inventor： Hong-kyu Lee ,  Hee-dong Kim ,  Pyong-yong Seong

IPC: G11B7/00

CPC classification number: G11B31/02

Abstract: A front photo detector (FPD) of an optical pick-up for an optical recording and playing apparatus having no gain selection switch, a simplified configuration, an improved prevention of an abnormal operation due to an error in gain selection, and improved reliability. The front photo detector includes a photo diode unit, a current-voltage amplifying circuit, and a voltage amplifying unit. The photo diode unit outputs current proportional to the power of the light emitted from one of a plurality of laser diodes. The current-voltage amplifying circuit converts the current output from the photo diode unit into a voltage. The voltage amplifying circuit amplifies the voltage output from the current-voltage amplifying circuit by a predetermined gain.

Abstract translation: 用于没有增益选择开关的光学记录和播放装置的光学拾取器的前光检测器（FPD），简化的配置，改善了由增益选择中的错误引起的异常操作的防止以及提高的可靠性。 前光检测器包括光电二极管单元，电流 - 电压放大电路和电压放大单元。 光电二极管单元输出与从多个激光二极管中的一个发射的光的功率成比例的电流。 电流 - 电压放大电路将来自光电二极管单元的电流输出转换为电压。 电压放大电路将从电流 - 电压放大电路输出的电压放大预定的增益。

公开(公告)号：US07403458B2

公开(公告)日：2008-07-22

申请号：US10766328

申请日：2004-01-29

Applicant: Ji-hwan Lim ,  Ju-hyung Lee ,  Pyong-yong Seong ,  Eun-goo Kim ,  Chun-gi Kim ,  Kyoung-hwan Park

Inventor： Ji-hwan Lim ,  Ju-hyung Lee ,  Pyong-yong Seong ,  Eun-goo Kim ,  Chun-gi Kim ,  Kyoung-hwan Park

IPC: G11B7/00

CPC classification number: G11B7/1263 ,  G11B7/123 ,  G11B7/1275 ,  G11B2007/0006

Abstract: A compatible optical pickup, including first and second light sources for emitting lights with different wavelengths and first and second photodetectors for detecting an information signal and/or an error signal, and a method of detecting the amount of output light using the compatible optical pickup. The first and second photodetectors monitor the amount of light output from the second and first light sources respectively such that no extra front photodetectors are required. Thus, the number of optical component parts included in the optical pickup can be reduced, thereby lowering the manufacturing costs for the optical pickup. Also, there is no need to secure a space in a base where a front photodetector is to be installed, so the base is simplified. Thus, inferior moldings are reduced, and the durability of a mold can be prolonged.

Abstract translation: 一种兼容的光学拾取器，包括用于发射具有不同波长的光的第一和第二光源以及用于检测信息信号和/或误差信号的第一和第二光电检测器，以及使用兼容光学拾取器检测输出光量的方法。 第一和第二光电检测器分别监测从第二和第一光源输出的光量，使得不需要额外的前光检测器。 因此，可以减少包括在光学拾取器中的光学部件的数量，从而降低光学拾取器的制造成本。 此外，不需要固定要安装前光电检测器的基座中的空间，因此基座被简化。 因此，较差的模制品减少，并且可以延长模具的耐久性。

公开(公告)号：US20080037387A1

公开(公告)日：2008-02-14

申请号：US11808517

申请日：2007-06-11

Applicant: Sun-mook Park ,  Ui-yol Kim ,  Jong-kook Lee ,  Pyong-yong Seong

Inventor： Sun-mook Park ,  Ui-yol Kim ,  Jong-kook Lee ,  Pyong-yong Seong

IPC: G11B7/00

CPC classification number: G11B7/0903 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/1378 ,  G11B2007/0006

Abstract: An optical pickup apparatus and an optical recording/reproducing system including the same, the optical pickup apparatus includes at least two optical systems for different types of optical recording media, one of objective lenses of the optical systems being offset from a central line of the optical recording medium, wherein the optical system including the offset objective lens having a diffraction grating diffracting light emitted from a light source to form a main beam and sub-beams, wherein the diffraction grating includes first and second diffraction regions having different grating patterns arranged alternately thereon, and a center of each sub-beam is arranged at a boundary of the first and second diffraction regions of the diffraction grating, and a center of the diffraction grating and an optical axis of the light source are adjusted to be coincided with each other, preventing generation of an alternating current in a Push-Pull signal of the sub-beams.

Abstract translation: 一种光学拾取装置和包括该光学拾取装置的光学记录/再现系统，该光学拾取装置包括用于不同类型的光学记录介质的至少两个光学系统，光学系统的物镜之一偏离光学中心线 其中所述光学系统包括具有衍射光栅的衍射光栅的光学系统，所述衍射光栅衍射从光源发射的光以形成主光束和子光束，其中所述衍射光栅包括交替地布置有不同格栅图案的第一和第二衍射区域 并且每个子光束的中心被布置在衍射光栅的第一和第二衍射区域的边界处，并且衍射光栅的中心和光源的光轴被调节为彼此一致， 防止在子光束的推挽信号中产生交流电。

公开(公告)号：US07283440B2

公开(公告)日：2007-10-16

申请号：US10073061

申请日：2002-02-12

Applicant: Kun-soo Kim ,  In-wook Hwang ,  Pyong-yong Seong

Inventor： Kun-soo Kim ,  In-wook Hwang ,  Pyong-yong Seong

IPC: G11B7/00

CPC classification number: G11B7/1353 ,  G11B7/0903 ,  G11B7/0943 ,  G11B7/1275 ,  G11B7/131 ,  G11B2007/0006

Abstract: An optical recording/reproducing apparatus includes an optical pickup and a signal processor. The optical pickup includes an optical splitting device which splits light emitted from a first light source into a main light beam and sub-light beams which are symmetrical with respect to the main light beam and irradiates the split light beams on a recording medium, and a light detection device which receives the main light beam and the sub-light beams reflected by the recording medium, so as to detect a tracking error signal in a three-beam method and one of a push-pull method and an improved push-pull method. The signal processor receives the detection signals output by the light detection device and detects the tracking error signal in the three-beam method and one of the push-pull method and the improved push-pull method, and otherwise selectively detects the tracking error signal in one of the three-beam method, the push-pull method and the improved push-pull method, so as to realize an optimal tracking servo-control. Since a selective use of one of the improved push-pull method, the push-pull method and the three-beam method can be made according to the type of an optical disc, the optimal tracking servo-control can be realized regardless of the depth of a pit in an optical disc during a reproduction of data from the optical disc, such as a non-rewritable optical disc.

Abstract translation: 光学记录/再现装置包括光学拾取器和信号处理器。 光拾取器包括将从第一光源发射的光分成主光束的光分束装置和相对于主光束对称的子光束，并将分束光束照射在记录介质上， 光检测装置，其接收主光束和由记录介质反射的子光束，以便以三光束方式检测跟踪误差信号，并且推挽方法和改进的推挽方法之一 。 信号处理器接收由光检测装置输出的检测信号，并以三光束方式检测跟踪误差信号以及推挽方法和改进的推挽方法之一，否则选择性地检测跟踪误差信号 三波束法，推挽法和推挽法改进，实现了最优跟踪伺服控制。 由于可以选择性地使用改进的推挽方法之一，可以根据光盘的类型进行推挽方式和三光束方式，可以实现最佳的跟踪伺服控制，而与深度无关 在从诸如不可重写光盘的光盘再现数据期间光盘中的凹坑。

公开(公告)号：US07218598B2

公开(公告)日：2007-05-15

申请号：US10655608

申请日：2003-09-05

Applicant: Kun-soo Kim ,  Pyong-yong Seong ,  Sun-mook Park

Inventor： Kun-soo Kim ,  Pyong-yong Seong ,  Sun-mook Park

IPC: G11B7/00

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

Abstract: An optical pickup using a two-wavelength light source module includes a light source module, a collimating lens, and a first optical element. The light source module includes first and second light sources which emit first and second light beams of different wavelengths and are formed in a single package. The collimating lens directs the first and/or second light beams into convergent light or divergent light so that the convergent light or the divergent light is incident on the objective lens. The optical pickup is a finite optical system due to the collimating lens. The first optical element is disposed on the traveling paths of the first and second light beams, operates as a lens only for one of the first and second light beams, and corrects a position difference between the first and second light sources along a traveling direction of light. The optical pickup further includes a second optical element which is disposed on the traveling paths of the first and second light beams and matches traveling optical axes of the first and second light beams with each other.

Abstract translation: 使用双波长光源模块的光学拾取器包括光源模块，准直透镜和第一光学元件。 光源模块包括发射不同波长的第一和第二光束并且形成在单个封装中的第一和第二光源。 准直透镜将第一和/或第二光束引导成会聚光或发散光，使得会聚光或发散光入射到物镜上。 由于准直透镜，光学拾取器是有限的光学系统。 第一光学元件设置在第一和第二光束的行进路径上，仅作为第一和第二光束中的一个的透镜操作，并且沿第一和第二光束的行进方向校正第一和第二光源之间的位置差 光。 光学拾取器还包括第二光学元件，其设置在第一和第二光束的行进路径上并使第一和第二光束的行进光轴相互匹配。

公开(公告)号：USRE39025E1

公开(公告)日：2006-03-21

申请号：US09689757

申请日：2000-10-13

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: G02B9/00

CPC classification number: G11B7/1353 ,  G02B3/10 ,  G02B27/58 ,  G11B7/0909 ,  G11B7/133 ,  G11B7/1367 ,  G11B7/1374 ,  G11B2007/0006 ,  G11B2007/13727

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：US06873592B2

公开(公告)日：2005-03-29

申请号：US10188860

申请日：2002-07-05

Applicant: Cheol-sung Yeon ,  Pyong-yong Seong

Inventor： Cheol-sung Yeon ,  Pyong-yong Seong

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

CPC classification number: G11B7/1365 ,  G11B7/123

Abstract: A slim optical pickup apparatus which records/reads information from a recording medium includes a light source, an objective lens which focuses a beam incident from the light source on the recording medium, an optical device which is provided on an optical path between the light source and the objective lens, and converts the beam incident from the light source into a parallel beam, an optical axis shifting unit which is provided on an optical path between the optical device and the objective lens, and shifts an optical axis of the parallel beam passing through the optical device in parallel in a direction, a reflecting mirror which is provided on an optical path between the optical axis shifting unit and the objective lens, and reflects the parallel beam passing through the optical axis shifting unit toward the recording medium, and a photodetector which receives a beam reflected from the recording medium and passed through the optical axis shifting unit, and performs a photoelectric conversion. Use of the optical path shifting unit reduces the height of an optical pickup apparatus, thereby providing a slim optical pickup apparatus using an existing light source and photodetector of a conventional size.

Abstract translation: 从记录介质记录/读取信息的细长光学拾取装置包括光源，将从光源入射的光束聚焦在记录介质上的物镜，设置在光源之间的光路上的光学装置 和物镜，并将从光源入射的光束转换为平行光束;光轴移动单元，设置在光学设备和物镜之间的光路上，并使平行光束通过的光轴移动 通过光学装置沿一个方向平行地设置反射镜，该反射镜设置在光轴移动单元和物镜之间的光路上，并将通过光轴移动单元的平行光束反射到记录介质，以及 光接收器，其接收从记录介质反射并通过光轴移动单元的光束，并执行光电 转换。 使用光路移动单元降低了光学拾取装置的高度，从而提供了使用现有的光源和常规尺寸的光电检测器的超薄光学拾取装置。

公开(公告)号：US20050052968A1

公开(公告)日：2005-03-10

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 ,  G11B7/125 ,  G11B7/135

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。