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1. 发明授权

US5537384A Focus error detector 失效
标题翻译：聚焦误差检测器
公开(公告)号：US5537384A
公开(公告)日：1996-07-16
申请号：US364983
申请日：1994-12-28
申请人： Chul-woo Lee , Chong-sam Chung , Jan-hoon Yoo , Kyung-hwa Rim
发明人： Chul-woo Lee , Chong-sam Chung , Jan-hoon Yoo , Kyung-hwa Rim
IPC分类号： G11B7/09 , G11B7/095 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1356 , G11B7/0912 , G11B7/095
摘要： A focus error detector for detecting a focus error of an objective lens with respect to an optical disk. The focus error detector includes a beam splitter for splitting light reflected from the optical disk. Two critical angle prisms having critical angle reflecting surfaces are included for respectively reflecting the light rays from the beam splitter at the respective critical angles onto two bisectional photo-detectors. The bisectional photo-detector generates detecting signals responsive to the amount of light received. The detecting signals are differentiated and added in a direction offsetting a shift or tilt of the reflected light. Accordingly, only the focus error signal is detected, irrespective of the tilt and shift of the optical axis of the reflected light. Thus, malfunction of an optical pickup is prevented, thereby providing for the uncorrupted recording and reproduction of data.
摘要翻译：一种用于检测物镜相对于光盘的聚焦误差的聚焦误差检测器。聚焦误差检测器包括用于分离从光盘反射的光的分束器。包括具有临界角反射表面的两个临界角棱镜，用于分别将来自分束器的光线以各自的临界角反射到两个二分光电检测器上。二分光电检测器响应于所接收的光量产生检测信号。检测信号在偏移反射光的偏移或倾斜的方向上被微分并相加。因此，不管反射光的光轴的倾斜和偏移如何，仅检测聚焦误差信号。因此，防止了光学拾取器的故障，由此提供数据的不良记录和再现。

2. 发明授权

US5822135A Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device 失效
公开(公告)号：US5822135A
公开(公告)日：1998-10-13
申请号：US640474
申请日：1996-05-01
申请人： Chul-woo Lee , Dong-ho Shin , Kyung-hwa Rim , Chong-sam Chung , Kun-ho Cho , Pyong-yong Seong , Jang-hoon Yoo , Yong-hoon Lee
发明人： 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分类号： B29D11/00 , G02B3/10 , G02B27/58 , G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13 , G11B7/135 , G02B9/00
CPC分类号： 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
摘要： 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.

3. 发明授权

US5802037A Optical detector with two detecting regions for reproducing and recording information on two kinds of disks having different thicknesses 失效
标题翻译：具有两个检测区域的光学检测器，用于在具有不同厚度的两种盘上再现和记录信息
公开(公告)号：US5802037A
公开(公告)日：1998-09-01
申请号：US708988
申请日：1996-09-06
申请人： Chul-woo Lee , Kyung-hwa Rim , Chong-sam Chung , Kun-ho Cho , Jang-hoon Yoo , Soo-yeul Jung
发明人： Chul-woo Lee , Kyung-hwa Rim , Chong-sam Chung , Kun-ho Cho , Jang-hoon Yoo , Soo-yeul Jung
IPC分类号： G11B7/08 , G11B7/00 , G11B7/09 , G11B7/13
CPC分类号： G11B7/131 , G11B7/0909 , G11B7/133 , G11B2007/0006
摘要： An optical pickup device which is capable of reproducing and recording information from/onto at least two kinds of discs having different thicknesses includes a light source, an objective lens provided along the light path from the light source facing the plane of a disc and having a predetermined effective diameter, a beam splitter provided between the objective lens and the light source, and a photodetector for detecting the beam split from the light splitter and reflected from the disc, wherein the photodetector has a first detection region and a second detection region provided in the peripheral portion of the first detection region. The optical pickup device is simplified and the manufacturing cost therefor is low. Also, by reducing the spherical aberration effect for the light, discs having different thicknesses can be used for a single disc drive.
摘要翻译：能够从具有不同厚度的至少两种光盘再现和记录信息的光学拾取装置包括：光源，沿着从光源面向光盘面的光路设置的物镜，具有设置在所述物镜和所述光源之间的分束器，以及用于检测从所述分光器分离并从所述光盘反射的光束的光电检测器，其中所述光电检测器具有第一检测区域和设置在所述光源中的第二检测区域第一检测区域的周边部分。光拾取装置简化，制造成本低。此外，通过减小光的球面像差效应，可以将具有不同厚度的盘用于单个盘驱动器。

4. 发明授权

US5629514A Critical angle focus error detector 失效
标题翻译：临界角聚焦误差检测器
公开(公告)号：US5629514A
公开(公告)日：1997-05-13
申请号：US458165
申请日：1995-06-02
申请人： Chul-woo Lee , Chong-sam Chung , Jang-hoon Yoo , Kyung-hwa Rim
发明人： Chul-woo Lee , Chong-sam Chung , Jang-hoon Yoo , Kyung-hwa Rim
IPC分类号： G11B7/09 , G11B7/135 , G01J1/20 , G11B7/00
CPC分类号： G11B7/1356 , G11B7/0908 , G11B7/0917 , G11B7/0943 , G11B2007/0919
摘要： A focus error detector for detecting a signal representing a degree of a focus error of an objective lens with respect to an optical disk in an optical pickup, in order to eliminate errors due to an optical axis shift or tilt of the reflected light reflected from the optical disk, includes a diffraction device for diffracting and splitting the reflected light reflected. The focus error detector a critical angle reflector having critical angle reflecting planes for reflecting the two diffracted light rays at two critical angles, two bi-segmented photo-detectors for receiving the two diffracted light rays reflected from the critical angle reflector, respectively, and detecting signals depending on the received light amount, and a circuit for differentiating and summing each signal of the two bi-segmented photo-detectors so as to offset the light amount difference due to the tilt or shift of the reflected light and outputting a desired signal. Therefore, only an original focus error signal is output, irrespective of an optical shift or tilt of the reflected light, so that malfunction of the optical pickup is prevented and clean recording and reproduction is enabled.
摘要翻译：一种聚焦误差检测器，用于检测表示物镜相对于光学拾取器中的光盘的聚焦误差的程度的信号，以便消除由于光学偏移反射的反射光的光轴偏移或倾斜引起的误差光盘包括用于衍射和分裂反射的反射光的衍射装置。聚焦误差检测器，具有用于以两个临界角度反射两个衍射光线的临界角反射面的临界角反射镜，分别用于接收从临界角反射器反射的两个衍射光线的两个双段光电检测器，信号，以及用于对两个双分段光电检测器的每个信号进行微分和求和以便偏移由于反射光的倾斜或偏移引起的光量差异并输出所需信号的电路。因此，不管反射光的光学偏移或倾斜如何，仅输出原始聚焦误差信号，从而防止光学拾取器的故障，并且能够进行清洁的记录和再现。

5. 发明授权

US5587976A Optical pickup for optical magnetic disc 失效
标题翻译：光磁盘光拾取器
公开(公告)号：US5587976A
公开(公告)日：1996-12-24
申请号：US555967
申请日：1995-11-13
申请人： Jang-hoon Yoo , Kyung-hwa Rim , Chong-sam Chung , Chul-woo Lee
发明人： Jang-hoon Yoo , Kyung-hwa Rim , Chong-sam Chung , Chul-woo Lee
IPC分类号： G11B11/10 , G11B5/00 , G11B5/012 , G11B5/35 , G11B5/596 , G11B7/12 , G11B11/105 , G11B7/00
CPC分类号： G11B11/10543 , G11B5/00 , G11B5/012 , G11B5/35 , G11B5/596
摘要： An optical pickup for an optical magnetic disc includes a light source, a grating for diffracting the light into a main light beam and auxiliary light beams, a plurality of magnetic dipole tips arranged above the optical magnetic disc so as to interact with the magnetic signal stored in the optical magnetic disc. Also, a plurality of mirror members each attached to the rear of each magnetic dipole tips are for reflecting the light incident on the mirror member, and a photodetector for detecting track errors and the stored information by receiving the light reflected from the mirror members are provided, thereby detecting the error signal and reproducing information by the interaction with the magnetic dipoles of the disc so that the recording density can be increased without increasing the conventional land and groove areas in the disc.
摘要翻译：一种用于光磁盘的光拾取器包括光源，用于将光衍射成主光束的光栅和辅助光束，布置在光磁盘上方的多个磁偶极子尖端，以便与存储的磁信号相互作用在光磁盘中。此外，各个安装在每个磁偶极头的后面的多个镜构件用于反射入射在镜构件上的光，并且设置用于检测轨道错误的光电检测器和通过接收从镜构件反射的光的存储信息从而通过与盘的磁偶极子的相互作用来检测误差信号和再现信息，从而可以增加记录密度，而不增加盘中常规的平台和凹槽区域。

6. 发明授权

US5777973A Reproducing and recording optical pickup compatible with discs having different thicknesses 失效
标题翻译：复制和记录与不同厚度的光盘兼容的光学拾取器
公开(公告)号：US5777973A
公开(公告)日：1998-07-07
申请号：US761826
申请日：1996-12-06
申请人： Jang-hoon Yoo , Chong-sam Chung , Chul-woo Lee , Kyung-hwa Rim , Kun-ho Cho
发明人： Jang-hoon Yoo , Chong-sam Chung , Chul-woo Lee , Kyung-hwa Rim , Kun-ho Cho
IPC分类号： G11B7/09 , G11B7/00 , G11B7/0037 , G11B7/08 , G11B7/125 , G11B7/13 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/131 , G11B7/133 , G11B7/1367 , G11B7/1381 , G11B2007/0006 , G11B2007/13727 , G11B7/0037 , G11B7/0909
摘要： A reproducing/recording optical pickup compatible with discs having different thicknesses includes a transparent plate having a central portion formed with a diffraction grating pattern for diffracting the light travelling from the light source to the objective lens, and a transparent portion through which the light passes, and a photodetector having first and second light receiving portions. The zero-order transmitted light and the passing light are focused using all regions of the aperture of the objective lens with respect to a thin disc. The positive first-order diffracted light diffracted by the diffraction grating pattern of the transparent plate is focused onto a thick disc by partial regions of the objective lens. Then, the reflected lights thereof are detected by the first and second light receiving portions, respectively. Because signals for reproduction and servo for each disc are detected as the detection signals of the first and second light receiving portions, stable servo and noiseless reproduction are possible, irrespective of the thickness of the disc used.
摘要翻译：与具有不同厚度的光盘兼容的再现/记录光学拾取器包括透明板，其具有形成有衍射光栅图案的中心部分，用于将从光源传播的光衍射到物镜，以及光通过的透明部分，以及具有第一和第二光接收部分的光电检测器。使用物镜的孔径的相对于薄盘的所有区域聚焦零级透射光和通过光。由透明板的衍射光栅图案衍射的正一级衍射光被物镜的部分区域聚焦在厚盘上。然后，其反射光分别由第一和第二光接收部分检测。由于每个盘的再现和伺服信号被检测为第一和第二光接收部分的检测信号，所以与所使用的盘的厚度无关，可以进行稳定的伺服和无噪声再现。

7. 发明授权

US5594714A Focus error detection with two symmetrically splitted reflected beams 失效
标题翻译：使用两个对称分裂的反射光束进行聚焦误差检测
公开(公告)号：US5594714A
公开(公告)日：1997-01-14
申请号：US366255
申请日：1994-12-29
申请人： Chul-woo Lee , Kyung-hwa Rim , Pyong-yong Seong , Chong-sam Chung
发明人： Chul-woo Lee , Kyung-hwa Rim , Pyong-yong Seong , Chong-sam Chung
IPC分类号： G11B7/13 , G11B7/09 , G11B7/135 , G11B7/00
CPC分类号： G11B7/131 , G11B7/0908 , G11B7/0917 , G11B7/0943
摘要： 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.
摘要翻译：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。

8. 再颁专利

USRE39025E1 Lens device including a light controlling mechanism and an optical pickup apparatus using a lens device 有权
标题翻译：包括光控制机构的透镜装置和使用透镜装置的光学拾取装置
公开(公告)号：USRE39025E1
公开(公告)日：2006-03-21
申请号：US09689757
申请日：2000-10-13
申请人： Chul-woo Lee , Dong-ho Shin , Kyung-hwa Rim , Chong-sam Chung , Kun-ho Cho , Pyong-yong Seong , Jang-hoon Yoo , Yong-hoon Lee
发明人： 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分类号： G02B9/00
CPC分类号： G11B7/1353 , G02B3/10 , G02B27/58 , G11B7/0909 , G11B7/133 , G11B7/1367 , G11B7/1374 , G11B2007/0006 , G11B2007/13727
摘要： 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.
摘要翻译：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。

9. 发明授权

US5987924A Lens mold and method of manufacturing a lens 失效
标题翻译：透镜模具及其制造方法
公开(公告)号：US5987924A
公开(公告)日：1999-11-23
申请号：US122846
申请日：1998-07-27
申请人： Chul-woo Lee , Dong-ho Shin , Kyung-hwa Rim , Chong-sam Chung , Kun-ho Cho , Pyong-yong Seong , Jang-hoon Yoo , Yong-hoon Lee
发明人： 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分类号： B29D11/00 , G02B3/10 , G02B27/58 , G11B7/00 , G11B7/0045 , G11B7/005 , G11B7/09 , G11B7/13 , G11B7/135 , C03B11/00
CPC分类号： 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
摘要： 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.
摘要翻译：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。

10. 发明授权

US5699339A Inverse image generating method apparatus thereof and focus error detecting method using the same and apparatus thereof 失效
标题翻译：其反像图像生成方法装置和使用其的聚焦误差检测方法及其装置
公开(公告)号：US5699339A
公开(公告)日：1997-12-16
申请号：US508253
申请日：1995-07-27
申请人： Chul-woo Lee , Chong-sam Chung , Jang-hoon Yoo , Kyung-hwa Rim
发明人： Chul-woo Lee , Chong-sam Chung , Jang-hoon Yoo , Kyung-hwa Rim
IPC分类号： G11B7/08 , G11B7/09 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1356 , G11B7/0908 , G11B7/0917 , G11B7/094 , G11B2007/0919
摘要： In detecting a focus error for an optical pickup, an inverse image generator for generating inverse images onto a light beam reflected from an optical disk is used in a focus error detecting method and apparatus thereof. The inverse image generator is composed of a semi-transmissive plane for splitting a light beam into first and second light beams, first and second prisms for inverting the phase of the second light beam, and third and fourth prisms for synthesizing the phase-inverted second light beam with the first light beam. Also, the inverse image generator has two quadrant wave plates, a polarization plane and light synthesizing plane for preventing a light loss. Since the errors due to an optical axis variation is eliminated from the focus error signal detected from the synthetic light beam radiated by the inverse generator, the optical pickup can be driven with stability.
摘要翻译：在检测光拾取器的聚焦误差时，在聚焦误差检测方法及其装置中使用用于在从光盘反射的光束上产生反转图像的逆图像发生器。逆图像生成器由用于将光束分割为第一和第二光束的半透射平面，用于反转第二光束的相位的第一和第二棱镜以及用于合成相位反转的第二棱镜的第三和第四棱镜光束与第一光束。此外，逆图像生成器具有两个象限波片，一个用于防止光损失的偏振面和光合成平面。由于从由逆发生器辐射的合成光束检测到的聚焦误差信号中消除了由于光轴变化引起的误差，所以可以稳定地驱动光学拾取器。

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