公开(公告)号：US07230905B2

公开(公告)日：2007-06-12

申请号：US10455363

申请日：2003-06-06

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

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

IPC: G11B7/135

CPC classification number: G11B7/1275 ,  G11B7/1353 ,  G11B7/1378 ,  G11B2007/0006

Abstract: An optical pickup includes a light source module in which first and second light sources that emit first and second light beams of different wavelengths are integrated into a single package, an objective lens that focuses the first and second light beams to form a light spot on a recording surface of a recording medium, a light path changer that changes a path along which the first and second light beams propagate, a photodetector that receives the first and second light beams entered via the objective lens and the light path changer and detects an information signal and/or error signal, and an optical element disposed on a path along which the first and second light beams propagate to act as a lens with respect to only one of the first and second light beams so as to correct a position difference along a light propagation direction between the first and second light sources. Accordingly, it possible to correct a position difference along a light propagation axis between the two light sources in the light source module. Obtaining the same light propagation axis is made possible by using the optical element to make the two light propagation axes coincidental or by using a separate optical element to perform this function. This allows the optical pickup to be used for recording as well as for reproducing.

Abstract translation: 光拾取器包括：光源模块，其中发射不同波长的第一和第二光束的第一和第二光源被集成到单个封装中;物镜，其聚焦第一和第二光束以在 记录介质的记录表面，改变第一和第二光束传播的路径的光路改变器，接收经由物镜进入的第一和第二光束的光电检测器和光路改变器，并检测信息信号 和/或误差信号，以及光学元件，其设置在第一和第二光束沿着该路径传播以用作相对于第一和第二光束中的一个的透镜，以便校正沿着光的位置差 第一和第二光源之间的传播方向。 因此，可以校正光源模块中的两个光源之间沿着光传播轴的位置差。 通过使用光学元件使两个光传播轴一致或通过使用单独的光学元件来执行该功能，可以获得相同的光传播轴。 这允许光学拾取器用于记录以及再现。

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：US07362689B2

公开(公告)日：2008-04-22

申请号：US10926150

申请日：2004-08-26

Applicant: Sun-mook Park ,  Jin-ho Jung ,  Pyong-yong Seong

Inventor： Sun-mook Park ,  Jin-ho Jung ,  Pyong-yong Seong

IPC: G11B7/00

CPC classification number: G11B7/131 ,  G11B7/0901 ,  G11B7/094 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/1381 ,  G11B2007/0006

Abstract: An optical pickup which, when a first light reflected by a recording medium is divided into a central light area and first and second peripheral light areas at both sides of the central light area, divides the first light reflected by the recording medium into at least 6 light areas, and the at least 6 light areas are independently detected from first through sixth light-receiving portions of a photodetector. Hence, the photodetector can detect a tracking error signal whose offset generation due to a shift of an objective lens is insensitive and whose offset generation due to an initial photodetector balance deviation is depressed.

Abstract translation: 一种光拾取器，当由记录介质反射的第一光被分成中心光区域和中心光区域两侧的第一和第二周边光区域时，将由记录介质反射的第一光分成至少6个 光区域，并且至少6个光区域被独立地从光电检测器的第一至第六光接收部分检测。 因此，光检测器可以检测由于物镜的偏移引起的偏移产生不敏感并且由于初始光电检测器平衡偏差导致的偏移产生被抑制的跟踪误差信号。

公开(公告)号：US07835235B2

公开(公告)日：2010-11-16

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：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：US07251209B2

公开(公告)日：2007-07-31

申请号：US10424821

申请日：2003-04-29

Applicant: Yong-jun Cho ,  Pyong-yong Seong ,  Seung-man Han ,  Hyun-seob Choi ,  Eun-goo Kim ,  Jong-koog Lee ,  Kun-soo Kim ,  Chun-gi Kim

Inventor： Yong-jun Cho ,  Pyong-yong Seong ,  Seung-man Han ,  Hyun-seob Choi ,  Eun-goo Kim ,  Jong-koog Lee ,  Kun-soo Kim ,  Chun-gi Kim

IPC: G11B7/135

CPC classification number: G11B7/1263 ,  G11B7/1275 ,  G11B7/1395 ,  G11B2007/0006

Abstract: An optical pickup for a recording medium includes a light source, an objective lens, a main photodetector, and a front photodetector. The configuration of the optical pickup enables converging or diverging of light to be incident on a plate beam splitter so that light can be received at an effective light receiving region of a front photodetector without interference due to internal reflection occurring in the plate beam splitter. In the alternative, a wedge beam splitter in the optical pickup includes first and second mirror planes at a predetermined angle to transmit and reflect incident light at a predetermined ratio. In the optical pickup, an amount of light that is exactly proportional to an output power of the light source can be detected, where the output power of the light source can be accurately controlled, thereby improving a linearity of the output power of the light source.

Abstract translation: 用于记录介质的光学拾取器包括光源，物镜，主光电检测器和前光电检测器。 光拾取器的配置使得入射到平板光束分离器上的光会聚或发散，使得可以在前光电检测器的有效光接收区域处接收光，而不会由于在板分光器中发生内反射而受到干扰。 或者，光学拾取器中的楔形光束分离器包括预定角度的第一和第二反射镜平面，以预定比例透射和反射入射光。 在光学拾取器中，可以检测与光源的输出功率正好成正比的光量，其中可以精确地控制光源的输出功率，从而提高光源的输出功率的线性 。

公开(公告)号：US20060188269A1

公开(公告)日：2006-08-24

申请号：US11413093

申请日：2006-04-28

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: H04B10/06

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：US07343103B2

公开(公告)日：2008-03-11

申请号：US11413093

申请日：2006-04-28

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: H04B10/08 ,  H04B10/06

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.

Abstract translation: 一种用于使用单个装置来检测由多个光源产生的光束功率的装置和方法。 该装置包括接收由多个光源中的一个产生的光束功率的光接收单元和选择增益的放大单元，根据所选择的增益放大由光接收单元接收的光束功率，以及 输出放大的光束功率作为检测到的光束功率。 根据该装置和方法，通过根据各个光源的特性确定的增益来放大接收光束功率（或放大增益）。 因此，考虑到每个光源的足够的动态范围，可以提供检测到的光束功率，从而实现有效的APC。

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：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.