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31. 发明授权

US06396638B1 Optical pickup device capable of stable tracking 失效
标题翻译：能够稳定跟踪的光学拾取装置
公开(公告)号：US06396638B1
公开(公告)日：2002-05-28
申请号：US09607928
申请日：2000-06-30
申请人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Joong-eon Seo , Dong-ho Shin
发明人： Jang-hoon Yoo , Kun-ho Cho , Seung-tae Jung , Chul-woo Lee , Joong-eon Seo , Dong-ho Shin
IPC分类号： G02B2714
CPC分类号： B82Y10/00 , G11B7/08564 , G11B7/1356 , G11B7/139 , G11B11/10543 , G11B11/10576 , G11B2007/13725
摘要： An optical pickup device includes a light source for generating light, a light path changing means for changing the traveling path of incident light, an objective lens for focusing incident light to form a light spot on a recording medium and having an incidence region of a predetermined size, a tracking mirror disposed on the light path between the light path changing means and the objective lens, for reflecting incident light emitted from the light source so that the light spot traces proper track positions of the recording medium, a lens unit consisting of at least two lenses which allow the light reflected from the tracking mirror to be incident on the incidence region of the objective lens, and a photo detecting unit for receiving light reflected from the recording medium and having passed through the objective lens and the light path changing means. Since the optical pickup device performs tracking by adjusting the reflection direction of incident light by means of a tracking mirror with an objective lens fixed, a tracking error signal offset due to movement of the objective lens is not generated, thereby enabling stable tracking.
摘要翻译：一种光拾取装置，包括用于产生光的光源，用于改变入射光的行进路径的光路改变装置，用于聚焦入射光以在记录介质上形成光点并具有预定的入射区域的入射区域的物镜尺寸，设置在光路改变装置和物镜之间的光路上的跟踪镜，用于反射从光源发射的入射光，使得光斑跟踪记录介质的正确轨道位置，由...组成的透镜单元允许从跟踪反射镜反射的光入射到物镜的入射区域的至少两个透镜，以及用于接收从记录介质反射并且已经通过物镜并且通过光路改变装置的光的光检测单元。由于光学拾取装置通过利用物镜固定的跟踪反射镜调节入射光的反射方向进行跟踪，所以不会产生由于物镜的移动导致的跟踪误差信号偏移，从而能够进行稳定的跟踪。

32. 发明授权

US06275461B1 Optical pickup using an optical phase plate 有权
标题翻译：光学拾取器采用光学相位板
公开(公告)号：US06275461B1
公开(公告)日：2001-08-14
申请号：US09538976
申请日：2000-03-31
申请人： 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
发明人： 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分类号： G11B712
CPC分类号： G11B7/127 , G11B7/1275 , G11B7/1353 , G11B7/1367 , G11B7/1374 , G11B7/139 , G11B2007/0006
摘要： A recording/reproducing apparatus includes an optical pickup device having an optical phase plate which is compatible with optical recording mediums having different thicknesses, and an optical signal processing device processes information read from the optical recording mediums and processes information to be recorded thereon using the optical pickup device.
摘要翻译：记录/再现装置包括具有光学相位差的光学拾取装置，其与具有不同厚度的光学记录介质兼容，并且光学信号处理装置处理从光学记录介质读取的信息并使用光学处理信息记录在其上拾取装置。

33. 发明授权

US06233217B1 Optical pickup for recording/reproduction with a light emitting diode light source 失效
标题翻译：用于用发光二极管光源进行记录/再现的光学拾取器
公开(公告)号：US06233217B1
公开(公告)日：2001-05-15
申请号：US09087861
申请日：1998-06-01
申请人： Jang-hoon Yoo , Chul-woo Lee , Kun-ho Cho
发明人： Jang-hoon Yoo , Chul-woo Lee , Kun-ho Cho
IPC分类号： G11B700
CPC分类号： G11B7/1384 , G11B7/127
摘要： An optical pickup for recording/reproduction. The optical pickup includes a light source unit including a light emitting diode (LED) to emit light and a waveguide to condense the light emitted from the LED; a collimating lens to collimate the light emitted from the waveguide; an objective lens to condense the light passed through the collimating lens to form a light spot on the recording surface of a recording medium; a light path changing unit arranged on an optical path between the collimating lens and the objective lens, to change a traveling path of the incident light; and a photodetector to receive the light incident via the objective lens and the light path changing unit after being reflected from the recording medium.
摘要翻译：用于记录/再现的光学拾取器。光拾取器包括：光源单元，其包括发光的发光二极管（LED）和用于冷凝从LED发射的光的波导; 准直透镜，用于准直从波导发射的光; 物镜，用于冷凝通过准直透镜的光，以在记录介质的记录表面上形成光斑; 布置在准直透镜和物镜之间的光路上的光路改变单元，以改变入射光的行进路径; 以及光电检测器，用于在从记录介质反射之后接收经由物镜和光路改变单元入射的光。

34. 发明授权

US6091691A Optical pickup having an objective lens compatible with a plurality of optical disk formats 失效
标题翻译：具有与多个光盘格式兼容的物镜的光学拾取器
公开(公告)号：US6091691A
公开(公告)日：2000-07-18
申请号：US23046
申请日：1998-02-13
申请人： Jang-hoon Yoo , Chong-sam Chung , Chul-woo Lee , Kun-ho Cho
发明人： Jang-hoon Yoo , Chong-sam Chung , Chul-woo Lee , Kun-ho Cho
IPC分类号： G11B7/00 , G11B7/125 , G11B7/13 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/126 , G11B7/127 , G11B7/131 , G11B7/1356 , G11B7/1367 , G11B7/1374 , G11B7/139 , G11B7/13922 , G11B2007/0006 , G11B2007/13727
摘要： An optical pickup compatible with a plurality of optical recording media each using light of a different wavelength. The optical pickup includes at least one light source, an objective lens, and a light detector. The objective lens has an inner area, an annular lens area and an outer area such that the annular lens area divides the inner area from the outer area and has a ring shape centered at a vertex. The inner area, the annular lens area and the outer area have aspherical surface shapes to focus light transmitted through the inner area and the outer area into a single light spot by which information can be read from the information recording surface of a relatively thin first optical recording medium and scatter light transmitted through the annular lens area located between the inner area and the outer area so that information cannot be read from the information recording surface of the first optical recording medium, during reproduction of the first optical recording medium. The inner area and the annular lens area transmit light into a single light spot by which information can be read from the information recording surface of a relatively thick second optical recording medium and scatters light transmitted through the outer lens area so that information cannot be read from the information recording surface of the second optical recording medium, during reproduction of the second optical recording medium.
摘要翻译：一种与多个使用不同波长的光的多个光学记录介质兼容的光学拾取器。光拾取器包括至少一个光源，具有将从光源发射的光聚焦到多个光学记录介质之一的信息记录表面上的最佳光点中的功能的物镜，以及光检测器在从形成有光斑的光记录介质的信息记录面反射后，检测透过物镜的光。物镜具有内部区域，环形透镜区域和外部区域，使得环形透镜区域将内部区域与外部区域分开并且具有以顶点为中心的环形。内部区域，环形透镜区域和外部区域具有非球面形状，以将透过内部区域和外部区域的光聚焦成单个光点，通过该单个光点可以从相对较薄的第一个信息记录表面读取信息光学记录介质和透射通过位于内部区域和外部区域之间的环形透镜区域的散射光，使得在再现第一光学记录介质期间不能从第一光学记录介质的信息记录表面读取信息。内部区域和环形透镜区域将光透射到单个光点中，通过该单个光点可以从相对较厚的第二光学记录介质的信息记录表面读取信息，并散射透过外部透镜区域的光，从而不能从在第二光学记录介质的再现期间，第二光学记录介质的信息记录表面。

35. 发明授权

US5933401A Optical pickup having plural optical sources and plural optical detectors 失效
标题翻译：具有多个光源和多个光检测器的光学拾取器
公开(公告)号：US5933401A
公开(公告)日：1999-08-03
申请号：US869754
申请日：1997-06-05
申请人： Chul-woo Lee , Dong-ho Shin , Chong-sam Chung , Pyeong-yong Seong , Kun-ho Cho , Hyun-seob Choi , Yong-hoon Lee , Tae-kyoung Kim , No-kyong Park
发明人： Chul-woo Lee , Dong-ho Shin , Chong-sam Chung , Pyeong-yong Seong , Kun-ho Cho , Hyun-seob Choi , Yong-hoon Lee , Tae-kyoung Kim , No-kyong Park
IPC分类号： G11B7/00 , G11B7/12 , G11B7/125 , G11B7/135
CPC分类号： G11B7/1356 , G11B7/123 , G11B7/127 , G11B7/1395 , G11B2007/0006
摘要： An optical pickup capable of compatibly adopting disks of different formats which are placed in an optical player includes a first optical source for emitting light having a predetermined wavelength, a second optical source for emitting light having a wavelength different from that of light emitted from the first optical source, an objective lens for focusing light emitted from the respective first and second optical sources on a recording medium placed in the optical player, a light path changing unit disposed on a light path between the first and second optical sources and the objective lens for changing the traveling path of incident light, a first optical detector for receiving light emitted from the first optical source and is incident via the recording medium and the light path changing unit, and a second optical detector for receiving light emitted from the second optical source and is incident via the recording medium and the light path changing unit.
摘要翻译：能够兼容地采用放置在光学播放器中的不同格式的光盘的光学拾取器包括：用于发射具有预定波长的光的第一光源;用于发射波长与第一光发射光的波长不同的光的第二光源; 光源，用于将从相应的第一和第二光源发射的光聚焦在放置在光学播放器中的记录介质上的物镜;设置在第一和第二光源与物镜之间的光路上的光路改变单元，改变入射光的行进路径，第一光学检测器，用于接收从第一光源发射的光，并经由记录介质和光路改变单元入射;以及第二光学检测器，用于接收从第二光源发射的光;以及经由记录介质和光路改变单元入射。

36. 发明授权

US5805556A Optical pickup apparatus having a holographic optical element 失效
标题翻译：具有全息光学元件的光学拾取装置
公开(公告)号：US5805556A
公开(公告)日：1998-09-08
申请号：US777130
申请日：1996-12-30
申请人： Chul-woo Lee , Jang-hoon Yoo , Yong-hoon Lee , Kyung-hwa Rim
发明人： Chul-woo Lee , Jang-hoon Yoo , Yong-hoon Lee , Kyung-hwa Rim
IPC分类号： G11B7/12 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1353 , G11B7/123
摘要： An optical pickup apparatus for recording and reproducing information, which is manufactured to be extremely small in a hybrid type. The optical pickup apparatus includes a first holographic optical element as a beam expander for diffracting to enlarge a diverging angle of an incident beam emitted from a light source and a second holographic optical element as an object lens for diffracting the incident beam whose diverging angle is enlarged by the first holographic optical element to focus the incident beam on an optical disk. Here, the first holographic optical element has a function of a beam splitter for diffracting a reflected beam to be separated as well as a function of a beam expander. The optical pickup apparatus is manufactured to be extremely small and ultralight due to its short optical path. Therefore, the optical pickup apparatus is influential on the miniaturization of various optical information processing systems, and contributes to a stable operation and a high speed search due to its excellent optical performance.
摘要翻译：一种用于记录和再现信息的光学拾取装置，其被制造为非常小的混合型。光拾取装置包括作为扩束器的第一全息光学元件，用于衍射以扩大从光源发射的入射光束的发散角和第二全息光学元件作为用于衍射发散角度扩大的入射光束的物镜通过第一全息光学元件将入射光束聚焦在光盘上。这里，第一全息光学元件具有用于衍射待分离的反射光束的分束器以及光束扩展器的功能。光学拾取装置由于其光路短而被制造成非常小和超轻。因此，光学拾取装置对各种光学信息处理系统的小型化有影响，由于其优异的光学性能，有助于稳定的操作和高速搜索。

37. 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。

38. 发明授权

US5793407A Method and apparatus for forming a light spot smaller than a theoretical limit for high density recording 失效
标题翻译：用于形成小于高密度记录的理论极限的光点的方法和装置
公开(公告)号：US5793407A
公开(公告)日：1998-08-11
申请号：US507914
申请日：1995-07-27
申请人： Tae-seok Park , Chul-woo Lee , Jang-hoon Yoo
发明人： Tae-seok Park , Chul-woo Lee , Jang-hoon Yoo
IPC分类号： G11B7/00 , G02B27/58 , G11B7/0045 , G11B7/12 , G11B7/125 , G11B7/135 , B41J2/47
CPC分类号： B82Y10/00 , G02B27/58 , G11B7/122 , G11B7/1367 , G11B7/1381 , G11B7/1387 , G11B2007/13727
摘要： A high density recording method for performing high density recording by reducing a light spot size in an optical pickup for recording information by scanning an optical disk with the light spot, spatially controlling the phase or the intensity of light being focused within the optical focal length of an objective lens by employing a diffraction optical element so as to form on the optical disk a light spot whose diameter is reduced according to the width of the portion for controlling the phase or intensity of the light. The distribution of the optical intensity is variable depending on the distance between the diffraction optical element and the optical disk, to thereby enable theoretically forming a limitlessly small light spot, and actually, greatly increase the recording capacity. The diffraction optical element can be used as a floating slider in an optical pickup having a swing arm.
摘要翻译：一种高密度记录方法，用于通过用光斑扫描光盘来减少用于记录信息的光学拾取器中的光点尺寸来进行高密度记录，空间地控制聚焦在光焦度的光焦度内的光的相位或强度通过采用衍射光学元件在物镜上形成直径根据用于控制光的相位或强度的部分的宽度而减小的光斑的物镜。光强度的分布根据衍射光学元件和光盘之间的距离而变化，从而能够在理论上形成无限小的光斑，实际上大大提高了记录容量。衍射光学元件可以用作具有摆臂的光学拾取器中的浮动滑块。

39. 发明授权

US5748172A Mirror driving method and apparatus of micro-mirror array 失效
标题翻译：微镜阵列的镜面驱动方法和装置
公开(公告)号：US5748172A
公开(公告)日：1998-05-05
申请号：US591785
申请日：1996-01-25
申请人： Ci-moo Song , Chul-woo Lee , Han-ki Cho
发明人： Ci-moo Song , Chul-woo Lee , Han-ki Cho
IPC分类号： G02B26/00 , G02B26/08 , G09F9/37 , G09F19/16 , H04N5/74 , G09G3/34
CPC分类号： G02B26/085 , G02B26/0841 , H04N5/7458
摘要： In a mirror driving method of a micro-mirror array and an apparatus thereof, each of a plurality of mirrors is pivotally supported by hinges fixed to a substrate, and a permanent magnet is attached beneath the substrate to form a magnetic field about the mirrors. A coiled conductive layer is formed on the rear surface of each mirror to be selectively applied with current according to a video signal, and the selected mirror pivots in correspondence with the electrostatic force operative between the conductive layer to which the current is applied and the magnetic field. Thus, a light beam irradiating the micro-mirror array can be modulated according to an image, and mass production is made possible due to a simple structure which provides for a stable driving action.
摘要翻译：在微反射镜阵列的镜驱动方法及其装置中，多个反射镜中的每一个由固定在基板上的铰链枢转地支撑，永久磁铁安装在基板的下方，以形成围绕反射镜的磁场。在每个反射镜的后表面上形成螺旋导电层，以根据视频信号选择性地施加电流，并且所选择的反射镜对应于在施加电流的导电层与磁体之间的静电力对应地枢转领域。因此，照射微镜阵列的光束可以根据图像进行调制，并且由于提供稳定的驱动动作的简单结构使得批量生产成为可能。

40. 发明授权

US5734512A Dual-focus objective lens of optical pickup 失效
标题翻译：光学拾音器的双焦点物镜
公开(公告)号：US5734512A
公开(公告)日：1998-03-31
申请号：US587786
申请日：1995-12-26
申请人： Dong-ho Shin , Chul-woo Lee , Kyung-hwa Rim
发明人： Dong-ho Shin , Chul-woo Lee , Kyung-hwa Rim
IPC分类号： G02B13/18 , G02B3/10 , G11B7/00 , G11B7/125 , G11B7/135 , G02B3/02 , G02B27/14
CPC分类号： G11B7/1374 , G11B2007/0006 , G11B2007/13727
摘要： A dual-focus objective lens for an optical pickup which is compatible with both 0.6 mm and 1.2 mm disks is compensated in its aberration with respect to a light spot on a recording plane of the loaded disk and is composed of a first lens and a second lens. The loaded positions of the 0.6 mm disk and 1.2 mm disk in view of the second lens are different from each other. An optical pickup having the dual-focus objective lens can reproduce a signal with a high signal-to-noise ratio and has improved light efficiency. Also, an optical pickup enabling recording as well as reproduction is obtained.
摘要翻译：与0.6mm和1.2mm的光盘相兼容的用于光学拾取器的双焦点物镜相对于装载盘的记录平面上的光斑的像差被补偿，并由第一透镜和第二透镜镜片。鉴于第二透镜，0.6mm盘和1.2mm盘的装载位置彼此不同。具有双焦点物镜的光学拾取器可以再现具有高信噪比的信号并且具有改善的光效率。此外，获得了能够进行记录和再现的光学拾取器。

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