公开(公告)号：US20090310448A1

公开(公告)日：2009-12-17

申请号：US12482932

申请日：2009-06-11

申请人： Yoshihiro IKAWA ,  Mamoru MORITA

发明人： Yoshihiro IKAWA ,  Mamoru MORITA

IPC分类号： G11B7/00

CPC分类号： G11B7/0932 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/0956

摘要： In an objective lens actuator of an optical disk drive and the like, variations in the fixed end positions of wires serving as suspensions are reduced and tilt characteristics are improved. Terminal plates 20 fixed to a lens holder are tilted relative to wires 13 for supporting the lens holder with elasticity, and are soldered at the edges of the terminal plates 20, so that variations in the fixed end positions of the wires 13 are reduced.

摘要翻译： 在光盘驱动器等的物镜致动器中，减少了用作悬架的线的固定端位置的变化，并提高了倾斜特性。 固定在透镜保持架上的端子板20相对于电线13倾斜，用于支撑透镜保持器的弹性，并且在端子板20的边缘焊接，使得电线13的固定端位置的变化减小。

公开(公告)号：USRE40954E1

公开(公告)日：2009-11-10

申请号：US10999236

申请日：2000-07-27

申请人： Tomohiko Sasano ,  Yasuhiro Tanaka ,  Michihiro Yamagata

发明人： Tomohiko Sasano ,  Yasuhiro Tanaka ,  Michihiro Yamagata

IPC分类号： G02B7/00

CPC分类号： G11B7/0956 ,  G02B27/0068 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/1374 ,  G11B7/13925 ,  G11B7/13927 ,  G11B7/22

摘要： An objective lens (1) for an optical disk, which focuses a light beam from a light source, is designed so that a third-order coma aberration generated when the objective lens is inclined at a unit angle is larger than a third-order coma aberration generated when the optical disk (2) is inclined at the unit angle, mounted on an actuator for inclining the objective lens according to an inclination amount of the optical disk, and used. With this structure, it is possible to obtain an objective lens for an optical disk that has a large numerical aperture and is easy to manufacture and assemble, and in which the third-order coma aberration generated when the optical disk surface is inclined owing to a warp or the like can be corrected by small inclination of the objective lens, so as to reduce a residual astigmatism, which is generated according to the inclination amount, after the correction.

公开(公告)号：US07613083B2

公开(公告)日：2009-11-03

申请号：US11573786

申请日：2005-07-25

申请人： Coen Adrianus Verschuren ,  Ferry Zijp

发明人： Coen Adrianus Verschuren ,  Ferry Zijp

IPC分类号： G11B7/00

CPC分类号： G11B7/1387 ,  G11B7/0956 ,  G11B2007/13727

摘要： An optical scanning device for scanning a record carrier (22), the record carrier has an outer face (24) and the optical scanning device comprises a radiation source system (2) arranged to generate a radiation beam; an objective system (20) having an exit face (76) and which is arranged between the radiation source system and the record carrier and provides for evanescent coupling of the radiation across a gap between the exit face of the objective system and the outer face of the record carrier; and a radiation detector arrangement for detecting radiation after interaction with the record carrier. The radiation detector arrangement is arranged to produce a tilt error signals (α, β) representing a tilt misalignment between the exit face of the objective system and the outer face of the record carrier. The radiation detector arrangement is arranged to produce the tilt error signal by detecting information in the radiation which is indicative of a variation in efficiency off the evanescent coupling across the exit face.

摘要翻译： 一种用于扫描记录载体（22）的光学扫描装置，所述记录载体具有外表面（24），并且所述光学扫描装置包括布置成产生辐射束的辐射源系统（2） 具有出射面（76）并且被布置在辐射源系统和记录载体之间的物镜系统（20），并且提供辐射穿过物镜系统的出射面和出射面之间的间隙的渐逝耦合 记录载体; 以及用于在与记录载体相互作用之后检测辐射的辐射检测器装置。 放射线检测器装置被布置成产生表示物镜系统的出射面和记录载体的外表面之间的倾斜不对准的倾斜误差信号（α，β）。 放射线检测器装置被布置成通过检测辐射中的信息来产生倾斜误差信号，其指示出口面上的ev逝耦合的效率变化。

公开(公告)号：US07555761B2

公开(公告)日：2009-06-30

申请号：US11315243

申请日：2005-12-23

申请人： In Ho Choi ,  Sam Nyol Hong ,  Jin A Kim ,  Young Joong Kim

发明人： In Ho Choi ,  Sam Nyol Hong ,  Jin A Kim ,  Young Joong Kim

IPC分类号： G11B7/08

CPC分类号： G11B7/0932 ,  G11B7/0933 ,  G11B7/0935 ,  G11B7/0956

摘要： An optical pick-up actuator is provided. The optical pick-up actuator includes a lens holder, a tracking coil, a focusing coil, and a magnet. The lens holder holds an objective lens. The tracking coil is wound with wire, is disposed at a central portion on both sides of the lens holder, and includes a horizontal width at a top thereof that is less than a horizontal width at a bottom thereof. The focusing coil is wound with wire, is disposed at a left and a right on both sides of the lens holder, and includes a horizontal width at a top thereof that is greater than a horizontal width at a bottom thereof. The magnet faces the tracking coil and the focusing coil.

摘要翻译： 提供光学拾取致动器。 光学拾取致动器包括透镜架，跟踪线圈，聚焦线圈和磁铁。 透镜架保持物镜。 跟踪线圈用线缠绕，设置在透镜保持器的两侧的中央部分，并且在其顶部包括小于其底部的水平宽度的水平宽度。 聚焦线圈用线缠绕，在透镜保持器的两侧左右设置，并且在其顶部包括大于其底部的水平宽度的水平宽度。 磁铁面向跟踪线圈和聚焦线圈。

公开(公告)号：US20090161501A1

公开(公告)日：2009-06-25

申请号：US12255151

申请日：2008-10-21

申请人： Hiroshi Kubota ,  Yoshinori Tazaki ,  Kazumi Sugiyama

发明人： Hiroshi Kubota ,  Yoshinori Tazaki ,  Kazumi Sugiyama

IPC分类号： G11B7/00

CPC分类号： G11B7/08511 ,  G11B7/0956

摘要： According to one embodiment, when a focus servo goes off and the distance between an objective lens and a recording layer of an optical disc does not coincide with a focal length of the objective lens, a control voltage or current corresponding to an optical disc wobble stored in a memory is superimposed on a control voltage or current supplied to a driving mechanism to move an objective lens along an optical axis for re-focusing, and the superimposed voltage or current is supplied to the driving mechanism. Therefore, pull-in of a focus servo for re-focusing is possible in a short time.

摘要翻译： 根据一个实施例，当聚焦伺服断开并且物镜与光盘的记录层之间的距离与物镜的焦距不一致时，存储对应于光盘摆动的控制电压或电流 在存储器中叠加在提供给驱动机构的控制电压或电流上以沿着光轴移动物镜以进行再聚焦，并且叠加的电压或电流被提供给驱动机构。 因此，在短时间内可以进行用于重新聚焦的聚焦伺服的拉入。

公开(公告)号：US20090154307A1

公开(公告)日：2009-06-18

申请号：US12330212

申请日：2008-12-08

申请人： Satoshi NAGAOKA

发明人： Satoshi NAGAOKA

IPC分类号： G11B7/00

CPC分类号： G11B7/0945 ,  G11B7/0908 ,  G11B7/0956 ,  G11B7/13925

摘要： An optical pickup inspection device 3 sends to an actuator drive circuit 16 a command for changing defocus offset amount to set defocus offset amounts, and calculates jitter values for each of the defocus offset amounts based on a reproduction signal from a reproduction signal generation circuit 14. Then, the device 3 determines a quadric approximating curve of jitter values relative to the defocus offset amounts and calculates a correlation coefficient R2 of the quadric approximating curve and measured values. If the correlation coefficient R2 is lower than a threshold value, the setting of defocus offset amounts and the calculation of jitter values are executed once again, otherwise, a defocus offset amount corresponding to a bottom value of jitter in the quadric approximating curve is determined as an optimum value of the defocus offset amount. Thus, a less-error, high-accuracy optimum value of the defocus offset amount can be obtained.

摘要翻译： 光拾取器检测装置3向致动器驱动电路16发送用于改变散焦偏移量以设定散焦偏移量的命令，并且基于来自再现信号生成电路14的再现信号计算每个散焦偏移量的抖动值。 然后，装置3确定相对于散焦偏移量的抖动值的二次近似曲线，并计算二次逼近曲线和测量值的相关系数R2。 如果相关系数R2低于阈值，则再次执行散焦偏移量的设定和抖动值的计算，否则将对应于二次逼近曲线中的抖动的底部值的散焦偏移量确定为 散焦偏移量的最佳值。 因此，可以获得散焦偏移量的较小误差，高精度的最佳值。

公开(公告)号：US20090141597A1

公开(公告)日：2009-06-04

申请号：US12298149

申请日：2007-04-12

申请人： Coen Adrianus VERSCHUREN

发明人： Coen Adrianus VERSCHUREN

IPC分类号： G11B7/00

CPC分类号： G11B7/0956 ,  G11B7/0941 ,  G11B7/1387

摘要： A near field optical recording device and method of operating a near field optical recording device, the device being arranged to cooperate with an optical record carrier. The device comprising means to adjust tilt of a refractive optical element with respect to the optical record carrier according to a distance between the refractive optical element and the data layer of the optical record carrier to be accessed.

摘要翻译： 近场光记录装置和操作近场光记录装置的方法，该装置被布置成与光记录载体协作。 该装置包括根据要被访问的光学记录载体的折射光学元件和数据层之间的距离调整折射光学元件相对于光学记录载体的倾斜的装置。

公开(公告)号：US07522495B2

公开(公告)日：2009-04-21

申请号：US11522344

申请日：2006-09-18

申请人： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

发明人： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

IPC分类号： G11B15/52

CPC分类号： G11B7/00745 ,  G11B7/00454 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0956 ,  G11B7/126 ,  G11B7/1267 ,  G11B2007/0013

摘要： When recording or reading an optical disc having plural data recording layers, which data recording layer the light spot is focused on is detected to improve playback signal quality and signals written to the layer on which the light spot is focused are read more reliably. A convergent lens converges the laser beam on the optical disc, and a focus controller controls the focal point of the laser beam on the data layer. A tracking controller positions and tracks the focal point of the laser beam converged by the convergent lens on a track of the optical disc. A photodetector detects the reflected laser beam from the disc. A convergence detector then detects the convergence state of the laser beam emitted to the plural data recording layers. Based on output from the convergence detector, the laser driver is controlled to separately set beam power appropriately for each of the plural data layers of the disc during playback.

摘要翻译： 当记录或读取具有多个数据记录层的光盘时，检测到该光斑聚焦的哪个数据记录层以提高重放信号质量，并且更可靠地读取写入到其上聚焦光点的层的信号。 会聚透镜将激光束会聚在光盘上，并且聚焦控制器控制激光束在数据层上的焦点。 跟踪控制器将由会聚透镜会聚的激光束的焦点位置并跟踪在光盘的轨道上。 光电检测器检测来自盘的反射激光束。 然后，会聚检测器检测发射到多个数据记录层的激光束的会聚状态。 基于会聚检测器的输出，激光驱动器被控制为在回放期间对盘的多个数据层中的每一个分别设置光束功率。

公开(公告)号：US20090086605A1

公开(公告)日：2009-04-02

申请号：US12102966

申请日：2008-04-15

申请人： Tatsuro Ide ,  Kenichi Shimada

发明人： Tatsuro Ide ,  Kenichi Shimada

IPC分类号： G11B7/00

CPC分类号： G11B7/00772 ,  G11B7/0065 ,  G11B7/08564 ,  G11B7/0956

摘要： An object of this invention is to achieve a hologram information recording and recovering device using an angle multiplexing method capable of reducing crosstalk from an adjacent hologram. When a set of incident angles of reference light on a disc in recording a hologram using the angle multiplexing method is expressed by {θ}=[θ1, θ2, . . . , θM], an incident angle {θ} of reference light is changed according to a position on an optical information recording medium or a track position.

摘要翻译： 本发明的目的是实现使用能够减少相邻全息图的串扰的角度复用方法的全息图信息记录和恢复装置。 当使用角度多路复用方法记录全息图时盘上参考光的一组入射角由{θ1 =θ1，θ2，... 。 。 ，θM]，参考光的入射角θ根据光学信息记录介质上的位置或轨道位置而改变。

公开(公告)号：US20090046564A1

公开(公告)日：2009-02-19

申请号：US12293291

申请日：2007-03-19

申请人： Fumitomo Yamasaki ,  Hideki Aikoh ,  Akihiro Arai

发明人： Fumitomo Yamasaki ,  Hideki Aikoh ,  Akihiro Arai

IPC分类号： G11B7/135

CPC分类号： G11B7/0956 ,  G11B7/1378 ,  G11B7/13927 ,  G11B2007/0006

摘要： In an optical head (10) used for an optical disc (30) in which light-transmitting layers largely change in thickness, a degree-of-diversion/convergence enlarging member (20) fixed between a collimating lens (4) and an objective lens (6) is arranged. With this configuration, a moving range of the collimating lens can be reduced, and the optical head can be miniaturized.

摘要翻译： 在用于其中透光层厚度变化很大的光盘（30）的光学头（10）中，固定在准直透镜（4）和物镜（4）之间的分度/会聚放大部件（20） 配置透镜（6）。 利用这种配置，可以减小准直透镜的移动范围，并且可以使光学头小型化。