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1. 发明授权

US07324424B2 Compatible optical pickup having diffractive device to correct chromatism and divergent lens to increase working distance 失效
$Compatible optical pickup having diffractive device to correct chromatism and divergent lens to increase working distance$
标题翻译：兼容的光学拾取器具有衍射装置以校正色差和发散透镜以增加工作距离
公开(公告)号：US07324424B2
公开(公告)日：2008-01-29
申请号：US10295044
申请日：2002-11-15
申请人： Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Hae-jung Suh , Jin-kyung Lee , Jong-bae Kim
发明人： Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Hae-jung Suh , Jin-kyung Lee , Jong-bae Kim
IPC分类号： G11B7/135
CPC分类号： G11B7/1353 , G11B7/127 , G11B7/1367 , G11B7/1376 , G11B7/139 , G11B7/13922 , G11B2007/0006
摘要： A compatible optical pickup includes an optical disc, an objective lens, a diffractive device, and a divergent lens. The optical unit emits a short wavelength light beam corresponding to a high density optical disc and a long wavelength light beam corresponding to a low density optical disc. The objective lens forms a light spot on the high density optical disc and the low density optical disc and the diffractive device diffracts the short wavelength light beam to correct chromatism according to a change in a wavelength of the short wavelength light beam. The divergent lens refracts the long wavelength light beam toward the objective lens to increase a working distance with respect to the low density optical disc.
摘要翻译：兼容的光学拾取器包括光盘，物镜，衍射装置和发散透镜。光学单元发射对应于高密度光盘的短波长光束和对应于低密度光盘的长波长光束。物镜在高密度光盘上形成光点，低密度光盘和衍射装置衍射短波长光束，以根据短波长光束的波长变化校正色差。发散透镜将长波长光束折射到物镜以增加相对于低密度光盘的工作距离。

2. 发明授权

US07180846B2 Phase compensator and compatible optical pickup using the phase compensator 有权
标题翻译：相位补偿器和使用相位补偿器的兼容光学拾取器
公开(公告)号：US07180846B2
公开(公告)日：2007-02-20
申请号：US10284415
申请日：2002-10-31
申请人： Tae-kyung Kim , Young-man Ahn , Hae-jung Suh , Jin-kyung Lee , Jong-bae Kim , Chong-sam Chung
发明人： Tae-kyung Kim , Young-man Ahn , Hae-jung Suh , Jin-kyung Lee , Jong-bae Kim , Chong-sam Chung
IPC分类号： G02B5/18
CPC分类号： G11B7/1275 , G11B7/1367 , G11B7/13922 , G11B2007/0006
摘要： A compatible optical pickup for recording and/or reproducing information on/from multiple kinds of optical discs having different thicknesses by selectively using source lights of respective different wavelengths corresponding to a kind of disc and using a common objective lens. At least one phase compensator, which compensates a phase of a light having a particular wavelength to correct for spherical aberration due to a thickness difference between the kinds of optical discs and/or chromatic aberration due to a wavelength difference between the required source lights, is positioned between the source lights and an entrance pupil of the objective lens. Each phase compensator compensates light of at least one wavelength and passes light of at least one other wavelength without significant relative phase alteration. By using two phase compensators, the optical pickup may be made compatible with at least three kinds of optical discs.
摘要翻译：一种兼容的光学拾取器，用于通过选择性地使用对应于一种光盘的各种不同波长的光源并使用公共物镜来在具有不同厚度的多种光盘上记录和/或再现信息。至少一个相位补偿器补偿具有特定波长的光的相位，以校正由于各种光盘之间的厚度差导致的球面像差和/或由于所需源光之间的波长差导致的色差。位于源光和物镜的入射光瞳之间。每个相位补偿器补偿至少一个波长的光并且传递至少一个其它波长的光，而没有显着的相对相位变化。通过使用两个相位补偿器，光拾取器可以与至少三种光盘相兼容。

3. 发明授权

US06807144B2 Optical recording medium recordable on land and groove tracks 失效
标题翻译：光盘记录介质可在陆地和凹槽轨道上记录
公开(公告)号：US06807144B2
公开(公告)日：2004-10-19
申请号：US10157014
申请日：2002-05-30
申请人： Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Jin-kyung Lee , Jong-bae Kim , Du-seop Yoon
发明人： Tae-kyung Kim , Young-man Ahn , Chong-sam Chung , Jin-kyung Lee , Jong-bae Kim , Du-seop Yoon
IPC分类号： G11B700
CPC分类号： G11B27/24 , G11B7/00718 , G11B7/24082 , G11B2220/216 , G11B2220/2575
摘要： An optical recording medium having groove tracks and land tracks, first wobbles formed along both sidewalls of each of the groove tracks, second wobbles formed along both sidewalls of each of the land tracks and which are independent of the formation of the first wobble. A middle portion is formed at a predetermined position on each of the sidewalls between adjacent pairs of the land and groove tracks. This optical recording medium can significantly reduce the non-recordable area as compared to conventional optical recording media, resulting in a great improvement in recording density.
摘要翻译：一种光记录介质，具有凹槽轨迹和凹槽轨迹，沿着每个凹槽轨道的两个侧壁形成第一摆动，沿着每个凸台轨道的两个侧壁形成第二摆动，并且独立于第一摆动的形成。中间部分形成在相邻的脊和凹槽轨道对之间的每个侧壁上的预定位置处。与常规光学记录介质相比，该光学记录介质可以显着地减少不可记录区域，从而导致记录密度的极大提高。

4. 发明授权

US07266074B2 Optical disc apparatus and method of reproducing a wobble signal 失效
标题翻译：光盘装置和再现摆动信号的方法
公开(公告)号：US07266074B2
公开(公告)日：2007-09-04
申请号：US10183969
申请日：2002-06-28
申请人： Tae-kyung Kim , Young-man Ahn , Jong-bae Kim , Jin-kyung Lee , Chong-sam Chung
发明人： Tae-kyung Kim , Young-man Ahn , Jong-bae Kim , Jin-kyung Lee , Chong-sam Chung
IPC分类号： G11B7/005
CPC分类号： G11B27/24 , G11B7/0053 , G11B7/131 , G11B7/1381 , G11B7/24082 , G11B20/1403 , G11B27/3027 , G11B2220/216 , G11B2220/218 , G11B2220/2545 , G11B2220/2562
摘要： An optical disc apparatus and a wobble signal detection method in which a light beam projected onto an optical disc and reflected by the optical disc is divided into at least four light regions in the direction corresponding to the radial direction of the optical disc to detect the light regions, and a wobble signal is detected by performing a subtraction on first and second difference signals, the first difference signal obtained by performing a subtraction on detection signals for the inner light regions of the divided and/or detected light beam and the second difference signal obtained by performing a subtraction on detection signals for the outer light regions of the divided and/or detected light beam. Accordingly, when a wobble signal is reproduced from an optical disc manufactured by a wobble modulation manner, a wobble signal is prevented from being degraded due to the interference (cross talk) from the wobbles of adjacent tracks, even though the track pitch of the optical disc is reduced to improve the recording density.
摘要翻译：一种光盘装置和摆动信号检测方法，其中投射到光盘上并被光盘反射的光束在与光盘的径向对应的方向上被划分为至少四个光区域，以检测光区域，并且通过对第一和第二差分信号执行减法来检测摆动信号，通过对分割和/或检测光束的内部光区域的检测信号进行减法而得到的第一差分信号和第二差分信号通过对分割和/或检测到的光束的外部光区域的检测信号进行减法而获得。因此，当从由摆动调制方式制造的光盘再现摆动信号时，由于相邻轨道的摆动引起的干扰（串扰），摆动信号被防止掉，即使光学信号的轨道间距减少光盘以提高记录密度。

5. 发明授权

US07020051B2 Optical pickup capable of detecting and/or compensating for spherical aberration 失效
公开(公告)号：US07020051B2
公开(公告)日：2006-03-28
申请号：US09984886
申请日：2001-10-31
申请人： Tae-kyung Kim , Young-man Ahn , Hae-jung Suh , Chong-sam Chung
发明人： Tae-kyung Kim , Young-man Ahn , Hae-jung Suh , Chong-sam Chung
IPC分类号： G11B7/095 , G11B7/135
CPC分类号： G11B7/1353 , G11B7/007 , G11B7/00718 , G11B7/131 , G11B7/1369 , G11B7/1381 , G11B7/13927
摘要： An optical pickup is provided for a recording medium, including: a light source generating and emitting a light beam; a light beam division and detection unit dividing a particular light beam portion of the light beam after being reflected/diffracted from the recording medium into sub-divided light beams portions, and detecting the sub-divided light beam portions; and a spherical aberration detection circuit processing the sub-divided light beam portions to detect spherical aberration caused by thickness variation of the recording medium.

6. 发明授权

US07035186B2 Optical pickup for detecting thickness variation of a recording medium, and/or compensating for spherical aberration caused by thickness variation of a recording medium 失效
公开(公告)号：US07035186B2
公开(公告)日：2006-04-25
申请号：US09985767
申请日：2001-11-06
申请人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hae-jung Suh
发明人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hae-jung Suh
IPC分类号： G11B5/58
CPC分类号： G11B7/1369 , G11B7/0948 , G11B7/13927
摘要： An optical pickup for a recording medium includes a light beam division and detection unit including receiving portions dividing an incident light beam reflected on the recording medium into a first light beam portion and a second light beam portion around the first light beam portion and converting the first and second light beam portions into first and second detection signals, respectively. A thickness variation detection circuit detects a variation in thickness of the recording medium according to the first and second detection signals and outputs a thickness variation signal indicative thereof.

7. 发明授权

US07242659B2 Optical pickup for detecting thickness variation of a recording medium, and/or compensating for spherical aberration caused by thickness variation of a recording medium 有权
标题翻译：用于检测记录介质的厚度变化的光学拾取器和/或补偿由记录介质的厚度变化引起的球面像差
公开(公告)号：US07242659B2
公开(公告)日：2007-07-10
申请号：US11213996
申请日：2005-08-30
申请人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hae-jung Suh
发明人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hae-jung Suh
IPC分类号： G11B7/00
CPC分类号： G11B7/1369 , G11B7/0948 , G11B7/13927
摘要： An optical pickup for a recording medium includes a light beam division and detection unit including receiving portions dividing an incident light beam reflected on the recording medium into a first light beam portion and a second light beam portion around the first light beam portion and converting the first and second light beam portions into first and second detection signals, respectively. A thickness variation detection circuit detects a variation in thickness of the recording medium according to the first and second detection signals and outputs a thickness variation signal indicative thereof.
摘要翻译：用于记录介质的光学拾取器包括光束分割和检测单元，其包括将在记录介质上反射的入射光束分成第一光束部分和围绕第一光束部分的第二光束部分的接收部分，并将第一和第二光束部分分别成为第一和第二检测信号。厚度变化检测电路根据第一和第二检测信号检测记录介质的厚度变化，并输出表示其的厚度变化信号。

8. 发明申请

US20050286376A1 Optical pickup for detecting thickness variation of a recording medium, and/or compensating for spherical aberration caused by thickness variation of a recording medium 有权
标题翻译：用于检测记录介质的厚度变化的光学拾取器和/或补偿由记录介质的厚度变化引起的球面像差
公开(公告)号：US20050286376A1
公开(公告)日：2005-12-29
申请号：US11213996
申请日：2005-08-30
申请人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hae-jung Suh
发明人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hae-jung Suh
IPC分类号： G11B7/09 , G11B7/125 , G11B7/13 , G11B7/135 , G11B7/00
CPC分类号： G11B7/1369 , G11B7/0948 , G11B7/13927
摘要： An optical pickup for a recording medium includes a light beam division and detection unit including receiving portions dividing an incident light beam reflected on the recording medium into a first light beam portion and a second light beam portion around the first light beam portion and converting the first and second light beam portions into first and second detection signals, respectively. A thickness variation detection circuit detects a variation in thickness of the recording medium according to the first and second detection signals and outputs a thickness variation signal indicative thereof.
摘要翻译：用于记录介质的光学拾取器包括光束分割和检测单元，其包括将在记录介质上反射的入射光束分成第一光束部分和围绕第一光束部分的第二光束部分的接收部分，并将第一和第二光束部分分别成为第一和第二检测信号。厚度变化检测电路根据第一和第二检测信号检测记录介质的厚度变化，并输出表示其的厚度变化信号。

9. 发明授权

US07289417B2 Lens correcting wavefront error caused by tilt and optical pickup using same 有权
标题翻译：镜头校正波前误差由倾斜和光学拾取引起
公开(公告)号：US07289417B2
公开(公告)日：2007-10-30
申请号：US10653451
申请日：2003-09-03
申请人： Tae-kyung Kim , Chong-sam Chung , Young-man Ahn , Jong-bae Kim
发明人： Tae-kyung Kim , Chong-sam Chung , Young-man Ahn , Jong-bae Kim
IPC分类号： G11B7/135
CPC分类号： G11B7/1374 , G11B7/0933 , G11B7/0935 , G11B7/0956 , G11B7/1353 , G11B7/13922 , G11B2007/0006
摘要： An optical pickup having a plurality of objective lenses. At least one of the plurality of objective lenses is configured so that a type of wavefront error mainly generated by a tilt of the at least one of the plurality of objective lenses is the same as a type of a wavefront error mainly generated by an angle at which light is incident upon the at least one of the plurality of objective lenses.
摘要翻译：具有多个物镜的光学拾取器。多个物镜中的至少一个被配置为使得主要由多个物镜中的至少一个物镜的倾斜产生的波前误差的类型与主要由角度哪个光入射到多个物镜中的至少一个物镜上。

10. 发明授权

US06724710B2 Spherical abberation compensator and optical pickup using the same 有权
标题翻译：球面补偿器和光学拾取器使用相同
公开(公告)号：US06724710B2
公开(公告)日：2004-04-20
申请号：US10196139
申请日：2002-07-17
申请人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hea-jung Suh , Jong-bae Kim
发明人： Chong-sam Chung , Young-man Ahn , Tae-kyung Kim , Hea-jung Suh , Jong-bae Kim
IPC分类号： G11B700
CPC分类号： G11B7/13927 , G11B7/0948 , G11B7/1369
摘要： A spherical aberration compensator for compensating for spherical aberration resulting from a thickness deviation of a recording medium. The spherical aberration compensator includes a central compensation which provides a phase distribution that is effective for compensating for spherical aberration resulting from the thickness deviation and a peripheral compensation portion which surrounds the central compensation portion and provides a phase distribution that is effective for reducing a worsening of the spherical aberration caused by axial displacement of an objective lens from the central compensation portion. The spherical aberration compensator effectively relieves an optical pickup having an objective lens of an NA of 0.7 or greater of worsening of the spherical aberration resulting from thickness deviation of the recording medium.
摘要翻译：一种用于补偿由记录介质的厚度偏差引起的球面像差的球面像差补偿器。球面像差补偿器包括中心补偿，其提供有效补偿由厚度偏差产生的球面像差的相位分布和围绕中心补偿部分的外围补偿部分，并提供相位分布，该相位分布对于减少恶化由物镜从中心补偿部分的轴向位移引起的球面像差。球面像差补偿器有效地缓解了由于记录介质的厚度偏差导致的具有0.7或更大的NA的物镜的差异导致的球面像差恶化的光学拾取器。

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