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1. 发明专利

JP2008108385A Objective lens driving device and its manufacturing method 有权
标题翻译：目标镜头驱动装置及其制造方法
公开(公告)号：JP2008108385A
公开(公告)日：2008-05-08
申请号：JP2006291916
申请日：2006-10-27
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： SATO YOSHIHIRO , KIMURA KATSUHIKO , SAITOU HIDENAO , HADO JUN
IPC分类号： G11B7/09
CPC分类号： G02B27/646 , G02B7/02
摘要： PROBLEM TO BE SOLVED: To provide an objective driving device capable of improving frequency characteristics of an objective lens and coping with an increases in density and speed.
SOLUTION: The objective lens driving device is provided with an objective lens, a cylindrical lens holder for holding the objective lens, and a reinforcing member disposed in the opening of the side of the lens holder opposed to the objective lens. The reinforcing member is disposed from an opening end to a distance of 1/3 or more to 1/2 or less of a size in an optical axis direction in the cylindrical wall of the lens holder. This range makes a high-order resonance frequency of the lens holder high frequency and minimizing the vibration amplitude of the high-order resonance frequency.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够改善物镜的频率特性并应对密度和速度增加的目标驱动装置。解决方案：物镜驱动装置设置有物镜，用于保持物镜的柱面透镜保持器和设置在与物镜相对的透镜保持器的侧面的开口中的加强构件。加强构件从开口端配置在透镜架的筒状壁的光轴方向的1/3以上且1/2以下的距离。该范围使透镜架的高次谐振频率高频化并使高次谐振频率的振幅最小化。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2008059643A Lens drive unit and optical pickup 有权
标题翻译：镜头驱动单元和光学拾取器
公开(公告)号：JP2008059643A
公开(公告)日：2008-03-13
申请号：JP2006232982
申请日：2006-08-30
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： KATO MORIKAZU , SAITOU HIDENAO , YABE AKIO , KINOSHITA YASUSHI
IPC分类号： G11B7/135
CPC分类号： G11B7/13925 , G11B7/1374 , G11B2007/0006 , G11B2007/0013 , G11B2007/13727
摘要： PROBLEM TO BE SOLVED: To solve the problem that the scale of a lens drive unit is increased since first and second lenses are arranged side by side in use, in the lens drive unit on which the first and second lenses are mounted. SOLUTION: The lens drive unit is provided with: first and second lenses of different optical paths arranged between a light emitting element and an objective lens, wherein the optical axes of the first and second lenses are almost parallel to each other; a holder for holding the first and second lenses; and a driving mechanism for driving the first and second lenses in respective optical axis directions. The first and second lenses have outer peripheral parts outside an effective diameter, and the first and second lenses are partially overlapped when viewed from the optical axis directions of the first and second lenses. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了解决在安装第一和第二透镜的透镜驱动单元中，第一和第二透镜在使用中并排布置，增加了透镜驱动单元的尺寸的问题。解决方案：透镜驱动单元设置有：布置在发光元件和物镜之间的不同光路的第一和第二透镜，其中第一和第二透镜的光轴几乎彼此平行; 用于保持第一和第二透镜的保持器; 以及用于在各个光轴方向上驱动第一和第二透镜的驱动机构。第一透镜和第二透镜具有有效直径以外的外周部分，并且当从第一透镜和第二透镜的光轴方向观察时，第一透镜和第二透镜部分重叠。版权所有（C）2008，JPO＆INPIT

3. 发明专利

JP2007095220A Optical pickup 有权
标题翻译： OPTICAL PICKUP
公开(公告)号：JP2007095220A
公开(公告)日：2007-04-12
申请号：JP2005285826
申请日：2005-09-30
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： KINOSHITA YASUSHI , KIMURA KATSUHIKO , KATO MORIKAZU , SAITOU HIDENAO , HADO JUN
IPC分类号： G11B7/135
摘要： PROBLEM TO BE SOLVED: To provide an excellent optical pickup capable of increasing the high order resonance frequency of an objective lens drive means and providing high positioning accuracy of an objective lens. SOLUTION: The optical pickup comprises the objective lens for converging light to the recording surface of an optical disk and a lens holder for holding the objective lens, and the fitting part for loading the objective lens of the lens holder is provided with a notched part where a part of a surface to mount the objective lens is dug down and an adhesion groove adjacent to the notched part and dug down shallower than the notched part. Also, the adhesion groove adjacent to the notched part, for which a part of the inner side face of the fitting part is dug down, is provided. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够提高物镜驱动装置的高次谐振频率并提供物镜的高定位精度的优异的光学拾取器。解决方案：光学拾取器包括用于将光会聚到光盘的记录表面的物镜和用于保持物镜的透镜保持器，并且用于装载透镜保持器的物镜的装配部件设置有凹陷部分，其中用于安装物镜的表面的一部分被切割下来，并且与凹口部分相邻并且比凹口部分浅的凹陷部分的粘附槽。此外，设置与嵌合部的内侧面的一部分被切割的切口部相邻的密合槽。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006004484A Objective lens driving device and optical disk device 审中-公开
标题翻译：目标镜头驱动装置和光盘装置
公开(公告)号：JP2006004484A
公开(公告)日：2006-01-05
申请号：JP2004177718
申请日：2004-06-16
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： KIMURA KATSUHIKO , OGASAWARA HIROSHI , SAITOU HIDENAO
IPC分类号： G11B7/09 , G11B7/00
CPC分类号： G11B7/0933 , G11B7/0935
摘要： PROBLEM TO BE SOLVED: To improve efficiency of a magnetic circuit by bringing magnetic flux density distribution of an objective lens driving device close to symmetry.
SOLUTION: The objective lens driving apparatus 50 has an objective lens 1, a tracking coil 4 driving this objective lens to the tracking direction, a focusing coil 3 driving the objective lens to the focusing direction, and a yoke 20 which is arranged opposing to the tracking coil and to which a permanent magnet 8 is attached. The yoke 20 has a first yoke 11 which has a bottom plate part 11b and an outer yoke 11a bent with almost right angle to the bottom plate part from an outer edge part of the bottom plate part, and in which an opening is formed at a center part, and a second yoke 12 which has a bottom plate part 12b and an inner yoke 12c bent with almost right angle to the bottom plate part from an inner edge part of the bottom plate part and in which an opening is formed at a center part.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过使物镜驱动装置的磁通密度分布接近对称来提高磁路的效率。解决方案：物镜驱动装置50具有：物镜1，将该物镜驱动到跟踪方向的跟踪线圈4，将聚焦线圈3驱动到聚焦方向的物镜;以及轭20，与跟踪线圈相对并且固定有永磁体8。磁轭20具有第一磁轭11，该磁轭11具有从底板部的外缘部向底板部弯曲成大致成直角的底板部11b和外磁轭11a，其中，中心部分和第二磁轭12，其具有从底板部分的内边缘部分与底板部分几乎成直角弯曲的底板部分12b和内磁轭12c，并且其中开口形成在中心部分部分。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2008152882A Optical pickup and its manufacturing method 有权
标题翻译：光学拾取及其制造方法
公开(公告)号：JP2008152882A
公开(公告)日：2008-07-03
申请号：JP2006342057
申请日：2006-12-20
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： KINOSHITA YASUSHI , SAITOU HIDENAO , YABE AKIO
IPC分类号： G11B7/095 , G11B7/22
CPC分类号： G02B7/08 , G02B27/0068 , G11B7/13925 , G11B7/22
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup with high reliability that operates reliably when a nut and lens holder, which has abutted on a stopper and stopped, are driven in a reverse direction.
SOLUTION: The optical pickup has first and second thrust bearings of a motor rotation shaft, the lens holder that moves in a thrust direction by the motor rotation shaft, and a pre-load section that applies a pre-load to the lens holder in the thrust direction, and is configured so that a position of the second thrust bearing can be adjusted in the thrust direction. Further, the first and second thrust bearings and the motor rotation shaft are formed with conductors. The optical pickup is manufactured by moving the second thrust bearing in a direction to approach the motor rotation shaft until conductivity between the first thrust bearing and the second thrust bearing is obtained using a conductivity checker, then moving the second thrust bearing in a direction to move away from the motor rotation shaft, and fixing the second thrust bearing to a base.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种高可靠性的光学拾取器，当已经抵靠在止动器上并且停止的螺母和透镜保持器沿相反的方向被驱动时可靠地操作。解决方案：光学拾取器具有电动机旋转轴的第一和第二推力轴承，透镜保持器通过电动机旋转轴在推力方向上移动，以及预加载部分，其对透镜施加预加载保持器在推力方向上，并且构造成使得可以在推力方向上调节第二推力轴承的位置。此外，第一推力轴承和第二推力轴承和电动机旋转轴形成有导体。通过使第二推力轴承沿着接近电动机旋转轴的方向移动，直到第一推力轴承和第二推力轴承之间的电导率使用电导率检查器获得，然后沿着移动方向移动第二推力轴承来制造光学拾取器远离马达旋转轴，并将第二推力轴承固定到基座。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JP2008108384A Optical pickup and optical disk device using the same 审中-公开
标题翻译：光学拾取器和光盘装置使用它
公开(公告)号：JP2008108384A
公开(公告)日：2008-05-08
申请号：JP2006291915
申请日：2006-10-27
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： KINOSHITA YASUSHI , KATO MORIKAZU , KIMURA KATSUHIKO , SAITOU HIDENAO , ONO MASAHARU
IPC分类号： G11B7/125 , G11B7/09 , G11B7/12
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup in which large spherical aberration caused by the multi-layer of a disk is corrected at high speed and with low power consumption, and an optical disk device. SOLUTION: The optical pickup is composed of a lens correcting spherical aberration, a lens holder holding the lens, an intermediate holder supporting the lens holder movably in the optical axis of the lens, a base supporting the intermediate holder movably in the optical axis direction of the lens, a coil provided at the lens holder, a permanent magnet provided at the intermediate holder opposing the coil, a motor provided at the base, and a worm gear converting the rotation movement of the motor to the linear movement of the intermediate holder. The optical disk constituted so that after the lens holder is moved to a target position by an electromagnetic force by controlling a current quantity flowing to the coil, a position of the intermediate holder is controlled by driving the motor so that the current quantity flowing to the coil is reduced in a state that the lens holder is kept at the target position is arranged. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种光盘拾取器，其中由光盘的多层引起的大的球面像差以高速和低功耗被校正，以及光盘装置。解决方案：光学拾取器由校正球面像差的透镜，保持透镜的透镜保持架，可移动地支撑在透镜的光轴上的透镜保持器的中间保持器，可移动地支撑在光学元件中的基座设置在透镜保持器上的线圈，设置在与线圈相对的中间保持器处的永磁体，设置在基座上的马达和将马达的旋转运动转换成线性运动的蜗轮中间持有人光盘被构造成使得在通过控制流向线圈的电流量的电磁力将透镜保持器移动到目标位置之后，通过驱动电机来控制中间保持器的位置，使得流到线圈在透镜架保持在目标位置的状态下被减小。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2004265480A Position fine adjusting device 有权
公开(公告)号：JP2004265480A
公开(公告)日：2004-09-24
申请号：JP2003052623
申请日：2003-02-28
申请人： Hitachi Ltd , Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス , 株式会社日立製作所
发明人： KIMURA KATSUHIKO , SAITOU HIDENAO , YOSHIDA HIROYASU
IPC分类号： G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide a position fine adjusting device capable of preventing the positional shifting of a focusing coil middle line, and improving the assembling workability.
SOLUTION: Projections 8 and 9 as the movement limitation members of a middle line 32 are formed on a surface (one surface) opposite to a surface (other surface) to which a fixed part 7 is connected, and the positional shifting of the focusing coil middle line of a lens holder 2 is prevented. The insertion work of focusing coils 3a, 3b is executed from the surface to which the fixed part 7 is not connected. Thus, the position fine adjusting device capable of improving the assembling workability is provided. By the projection 9, the flowing-out of an adhesive for fixing the middle line 32 is prevented, and thus the reliability of the device is improved.
COPYRIGHT: (C)2004,JPO&NCIPI

8. 发明专利

JP2008041149A Optical pickup 有权
标题翻译： OPTICAL PICKUP
公开(公告)号：JP2008041149A
公开(公告)日：2008-02-21
申请号：JP2006212356
申请日：2006-08-03
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： KINOSHITA YASUSHI , KATO MORIKAZU , KIMURA KATSUHIKO , ONO MASAHARU , KURODA NAOMITSU , SAITOU HIDENAO
IPC分类号： G11B7/22 , G11B7/125
CPC分类号： G11B7/13925 , G11B7/1378 , G11B7/13922 , G11B7/13927 , G11B2007/0006 , G11B2007/13727
摘要： PROBLEM TO BE SOLVED: To provide an optical pickup preventing an optical axis is being displaced even when an environmental temperature varies. SOLUTION: The optical pickup has an optical unit 24 having a lens member 241 having the optical axis, and an optical pickup casing 29 holding the optical unit 24 from both of its sides. The optical axis of the lens member 241 is arranged closer to one side from the center of the optical unit 24. Lest the optical axis of the lens member 241 is displaced when the optical unit 24 expands thermally, the thermal expansion of the optical unit 24 is absorbed by the compression of first and second adhesives 3a and 3b. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使当环境温度变化时，提供防止光轴的光学拾取器也被移位。光拾取器具有光学单元24，该单元具有具有光轴的透镜构件241，以及从其两侧保持光学单元24的光学拾取器壳体29。透镜构件241的光轴配置成比光学单元24的中心更靠近一侧。当光学单元24热膨胀时，透镜构件241的光轴被偏移，光学单元24的热膨胀被第一和第二粘合剂3a和3b的压缩吸收。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2007102837A Optical pickup apparatus 有权
标题翻译： OPTICAL PICKUP APPARATUS
公开(公告)号：JP2007102837A
公开(公告)日：2007-04-19
申请号：JP2005287951
申请日：2005-09-30
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： KIMURA KATSUHIKO , SAITOU HIDENAO , HADO JUN
IPC分类号： G11B7/09
CPC分类号： G11B7/0935 , G11B7/0933
摘要： PROBLEM TO BE SOLVED: To reduce rotary moment caused in a coil attached to the side of a lens holder without detracting drive force for the focusing direction and the tracking direction in an objective lens drive means of an optical pickup apparatus. SOLUTION: The optical pickup apparatus is constituted so that unbalance of drive force of left and right is eliminated by canceling increase and decrease of drive force caused in a first coil of left and right when the lens holder is shifted to the tracking direction by arranging a coil wire part being near the objective lens out of two coil wire parts being almost parallel to the tracking direction of the first coil, so as to be shifted to a direction being separated from a lens optical axis. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：为了减少安装在透镜架一侧的线圈中产生的旋转力矩，而不会降低光拾取装置的物镜驱动装置中的聚焦方向和跟踪方向的驱动力。解决方案：光学拾取装置构成为：当透镜保持器向跟踪方向移动时，通过消除在左右第一线圈中产生的驱动力的增减来消除左右驱动力的不平衡通过将与第一线圈的跟踪方向几乎平行的两个线圈线部分中的物镜附近的线圈线部分布置，以便偏离与透镜光轴分离的方向。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2007102836A Objective lens drive unit 有权
标题翻译：目标镜头驱动单元
公开(公告)号：JP2007102836A
公开(公告)日：2007-04-19
申请号：JP2005287931
申请日：2005-09-30
申请人： Hitachi Media Electoronics Co Ltd , 株式会社日立メディアエレクトロニクス
发明人： OCHI MANABU , KIMURA KATSUHIKO , SAITOU HIDENAO , HADO JUN
IPC分类号： G11B7/09
CPC分类号： G11B7/0935 , G11B7/22
摘要： PROBLEM TO BE SOLVED: To sufficiently increase a high-order resonance frequency by improving rigidity of a lens holder holding an objective lens in an objective lens drive unit for recording and reproducing an optical disk. SOLUTION: The unit is characterized in that a flat plate 3a for connection being perpendicular to the focusing direction is provided between the side wall 3i of a lens holder part and the side wall 3s of an outside of the tracking direction in the almost middle of both ends in the focusing direction of the lens holder. COPYRIGHT: (C)2007,JPO&INPIT

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