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公开(公告)号：MY136702A
公开(公告)日：2008-11-28
申请号：MYPI20022182
申请日：2002-06-12
Applicant: SONY CORP
Inventor： IKEDA NAOTO , HIGASHIHARA TERUAKI
IPC: G11B7/09
Abstract: OBJECTIVE LENS DRIVER AND DISK DRIVE DEVICE COMPRISING THE SAMETHE PRESENT INVENTION RELATES TO AN OBJECTIVE LENS DRIVER INCLUDING : A SUPPORT BASE FORMED OF A MAGNETIC MATERIAL, COMPRISING A BASE PORTION, A SUPPORT SHAFT PROJECTED FROM THE BASE PORTION, AND A PAIR OF YOKES RESPECTIVELY PROJECTED IN THE SAME DIRECTION AS THE SUPPORT SHAFT FROM BOTH SIDE EDGES OF THE BASE PORTION AND LOCATED OPPOSITELY TO EACH OTHER WITH THE SUPPORT SHAFT THEREBETWEEN, THE YOKES HAVING OPPOSED SURFACES TO WHIC MAGNETS ARE FITTED; AND A MOVABLE PORTION SUPPORTED ON THE SUPPORT SHAFT OF THE SUPPORT BASE SO AS TO BE TURNABLE AROUND THE AXIS OF THE SUPPORT SHAFT AND SLIDABLE IN THE AXIAL DIRECTION OF THE SUPPORT SHAFT, HOLDING AN OBJECTIVE LENS HAVING AN OPTICAL AXIS SUBSTANTIALLY COINCIDING WITH THE AXIAL DIRECTION OF THE SUPPORT SHAFT, AND COMPRISING A FOCUSING COIL SUPPLIED WITH A DRIVING CURRENT AT THE TIME OF FOCUSING CONTROL OF LASER LIGHT RADIATED ONTO A DISK TYPE RECORDING MEDIUM THROUGH THE OBJECTIVE LENS, AND AT LEAST A PAIR OF TRACKING COILS SUPPLIED WITH A DRIVING CURRENT AT THE TIME OF TRACKING CONTROL OF THE LASER LIGHT, WHEREIN THE MAGNETS, THE YOKES, THE BASE PORTION, AND THE SUPPORT SHAFT FORM A MAGNETIC CIRCUIT.
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公开(公告)号：SG125071A1
公开(公告)日：2006-09-29
申请号：SG200203570
申请日：2002-06-13
Applicant: SONY CORP
Inventor： IKEDA NAOTO , HIGASHIHARA TERUAKI
Abstract: The present invention relates to an objective lens driver including: a support base formed of a magnetic material, comprising a base portion, a support shaft projected from the base portion, and a pair of yokes respectively projected in the same direction as the support shaft from both side edges of the base portion and located oppositely to each other with the support shaft therebetween, the yokes having opposed surfaces to which magnets are fitted; and a movable portion supported on the support shaft of the support base so as to be turnable around the axis of the support shaft and slidable in the axial direction of the support shaft, holding an objective lens having an optical axis substantially coinciding with the axial direction of the support shaft, and comprising a focusing coil supplied with a driving current at the time of focusing control of laser light radiated onto a disk type recording medium through the objective lens, and at least a pair of tracking coils supplied with a driving current at the time of tracking control of the laser light, wherein the magnets, the yokes, the base portion, and the support shaft form a magnetic circuit.
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公开(公告)号：HK1222256A1
公开(公告)日：2017-06-23
申请号：HK16110248
申请日：2016-08-29
Applicant: SONY CORP
Inventor： SUZUKI TAKAHARU , IKUTA HIROSHI , IKEDA NAOTO , FURUICHI MASAMICHI
IPC: G02B20060101 , G11B20060101
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公开(公告)号：PH12016501124B1
公开(公告)日：2016-07-18
申请号：PH12016501124
申请日：2016-06-10
Applicant: SONY CORP
Inventor： SUZUKI TAKAHARU , IKUTA HIROSHI , IKEDA NAOTO , FURUICHI MASAMICHI
Abstract: [Problem] To prevent stacking and to allow a rack to return to the condition of regular threaded engagement with a lead screw without increasing the number of components. [Solution] The present invention is provided with a light source, an objective, an optical element, and an optical element drive device. The optical element drive device is provided with: a lead screw having a threaded engagement portion in which a thread groove is formed; a drive unit for rotating the lead screw; a thrust bearing for receiving, in the axial direction of the lead screw, the end portion of the lead screw on the opposite side from the drive unit side; and a rack having a plurality of first toothed parts provided at intervals in the axial direction and threadably engaged with the threaded engagement portion, and a second toothed part provided farther toward the thrust bearing side in the axial direction than the first toothed parts, and threadably engaged with the threaded engagement portion, the first tooth parts and the second tooth part being positioned on both sides of the lead screw on opposite sides from each other, and the rack being moved in the axial direction along with the rotation of the lead screw; a non-threaded engagement portion devoid of a thread groove being formed at the end portion of the lead screw on the thrust bearing side.
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公开(公告)号：DE10226638A1
公开(公告)日：2002-12-19
申请号：DE10226638
申请日：2002-06-14
Applicant: SONY CORP
Inventor： IKEDA NAOTO , HIGASHIHARA TERUAKI
Abstract: Objective lens driver (11) comprises a base part (12) of magnetic material with an extending support shaft (16) and yokes (15) for support of magnets (17). Mounted on the shaft is a moving part (13) that contains the objective lens (22) and focussing coils (24) for focussing of the lens on the recording medium. A pair of slowing-down coils (25) are provided to slow the laser light. The magnets, yokes, base part and support shaft form a magnetic circuit. The invention also relates to a corresponding disk drive device that uses the inventive objective lens driver.
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Patent Agency Ranking
公开(公告)号：JP2009020979A
公开(公告)日：2009-01-29
申请号：JP2007184853
申请日：2007-07-13
Inventor： IKEDA NAOTO
Abstract: PROBLEM TO BE SOLVED: To ensure satisfactory characteristics in a spindle motor. SOLUTION: An objective lens drive 8 comprises: a fixed block 10; a moving block 11, having two objective lenses 23, 24 separately arranged nearly in a radius direction of a disk-like recording medium 100 and a lens holder 22 holding the objective lenses; a plurality of support springs 21, 21, and the like for connecting the fixed and movable blocks; a magnetic circuit 60 for focus adjustment operating the movable block in a focus direction; and a magnetic circuit 70 for tracking adjustment operating the movable block in a tracking direction. A median point M between the centers of the two objective lenses is positioned near the center side of the disk-like recording medium in the radius direction of the disk-like recording medium attached to a disk table 3a to a drive center P that is the center of force generated in the magnetic circuit for focus adjustment or that for tracking adjustment. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：确保主轴电机的满意特性。 物镜驱动器8包括：固定块10; 移动块11具有分别布置在盘状记录介质100的半径方向上的两个物镜23,24和保持物镜的透镜保持器22; 用于连接固定块和可动块的多个支撑弹簧21,21等; 用于焦点调节的磁路60在聚焦方向上操作可移动块; 以及用于跟踪沿跟踪方向操作可移动块的调整的磁路70。 两个物镜的中心之间的中点M位于盘状记录介质的中心侧附近的圆盘状记录介质的半径方向上的驱动中心P 在磁路中产生的用于焦点调节的力的中心或用于跟踪调整的力的中心。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JPH1083554A
公开(公告)日：1998-03-31
申请号：JP24017796
申请日：1996-09-11
Applicant: SONY CORP
Inventor： NODA TOYOKAZU , IKEDA NAOTO , KUBO TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide a small-sized and light pickup with simple constitution by making a laser beam center coincide with a mechanical center by a specified procedure in assembly of an optical pickup. SOLUTION: A laser coupler assembly(LC) 11, a collimate lens 14 and a prism mirror 15 are arranged on a base substrate 20, and a biaxial assembly 29 is temporarily fixed. In this case, the laser diode of the LC 11 is light emitted, and the position of the biaxial assembly 29 is adjusted and fixed so that the light intensity center of the laser beam coincides with an objective lens 16 center. A screw is inserted into an attaching tap 27 from an attaching hole 28, and a shell cover 22 is temporarily fixed to the base substrate 20. Mechanical marks are provided on the outer periphery of a window part 23, and a central point of a mechanical system is displayed at the intersected point between straight lines linking the marks. This central point is made to coincide with the center of the objective lens 16, and the shell cover 22 is fixed to the base substrate 22.
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公开(公告)号：JPH1021579A
公开(公告)日：1998-01-23
申请号：JP17673296
申请日：1996-07-05
Applicant: SONY CORP
Inventor： IKEDA NAOTO
IPC: G11B7/135
Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup capable of easily and optimally correcting astigmatism and recording/reproducing a high density optical recording/reproducing medium. SOLUTION: An astigmatic correction plate 7 is arranged between an optical integrated circuit 1 in which a photodetector 4 and a semiconductor laser 2 are formed on a semiconductor substrate 6, and a beam splitter 3 having a translucent reflection surface 3a slanting from an opposite surface to the light emission surface 2a of the semiconductor laser 2 by nearly 45 deg. is fixed onto the photodetector 4 and an objective lens 8 converging laser light on the optical recording/reproducing medium 93. Then, the astigmatic correction plate 7 is fixed to a holder 7a with a cylindrical surface, and is provided with an oblique angle adjustment means turntable around an optical axis. Thus, the astigmatism is adjusted easily and optimally without requiring more man-hour.
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公开(公告)号：JPH09180222A
公开(公告)日：1997-07-11
申请号：JP34361695
申请日：1995-12-28
Applicant: SONY CORP
Inventor： IKEDA NAOTO
IPC: G11B11/10 , G11B7/09 , G11B11/105
Abstract: PROBLEM TO BE SOLVED: To provide an optical pickup device having a very quick responsiveness by reducing the number of parts. SOLUTION: This device 20 holds a swing arm 31 to be freely turned by a bearing device 32 at a middle part in the direction of the length, fitting an optical head device 33 including an objective lens 332 at the tip of the swing arm 31, and fitting a turn-drive device 35 to turn the swing arm at the other end. When a light beam is defocused, the objective lens 332 is driven to be controlled in the direction of its optical axis, and in the case of detracking, the swing arm 31 is driven to be controlled by applying a tracking control signal in accordance with the tracking error to a turning coil 353 of the turning drive device 35.
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公开(公告)号：JPH0845212A
公开(公告)日：1996-02-16
申请号：JP17872094
申请日：1994-07-29
Applicant: SONY CORP
Inventor： IKEDA NAOTO , ENOMOTO KENJI
Abstract: PURPOSE:To enhance strength and rigidity of a slider holding part and to enhance floating characteristics as well. CONSTITUTION:A load beam 22 as an arm and a flexture 40 as a center spring type holding part are molded separately, and the flexture 40 is fixed to a base part 36 of the load beam 22 by spot welding, etc. An embossed part 44 is provided in approximately the center of a displacement part 41 of the flexture 40, and is in contact with the base part 36. Since the strength and the rigidity of the flexture 40 are higher than the cantilever spring type flexture, even when impact is given to this floating magnetic head 14 during its standby state, plastic deformation of the displacement part 41 can surely be prevented. In addition, since the embossed part 40 becomes a pivot of the slider 28, the floating characteristics are enhanced.
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