DE3681902D1 - Einrichtung, um einen axial bewegbaren gegenstand in eine axial neutrale stellung zu zwingen. - Google Patents

Einrichtung, um einen axial bewegbaren gegenstand in eine axial neutrale stellung zu zwingen.

Info

Publication number
DE3681902D1
DE3681902D1 DE8686309764T DE3681902T DE3681902D1 DE 3681902 D1 DE3681902 D1 DE 3681902D1 DE 8686309764 T DE8686309764 T DE 8686309764T DE 3681902 T DE3681902 T DE 3681902T DE 3681902 D1 DE3681902 D1 DE 3681902D1
Authority
DE
Germany
Prior art keywords
axial
force
neutral position
movable object
axial movable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE8686309764T
Other languages
English (en)
Inventor
Ikuo Nanno
Atsunobu Nakajima
Seiji Hoshi
Hiroyoshi Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seiko Instruments Inc filed Critical Seiko Instruments Inc
Application granted granted Critical
Publication of DE3681902D1 publication Critical patent/DE3681902D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0935—Details of the moving parts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
    • H02K41/02—Linear motors; Sectional motors
    • H02K41/035—DC motors; Unipolar motors
    • H02K41/0352—Unipolar motors
    • H02K41/0354—Lorentz force motors, e.g. voice coil motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/18—Machines moving with multiple degrees of freedom
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S359/00—Optical: systems and elements
    • Y10S359/903—Optical: systems and elements with magnet

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Optical Recording Or Reproduction (AREA)
DE8686309764T 1985-12-17 1986-12-15 Einrichtung, um einen axial bewegbaren gegenstand in eine axial neutrale stellung zu zwingen. Expired - Fee Related DE3681902D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60283735A JPS62141646A (ja) 1985-12-17 1985-12-17 対物レンズ駆動装置

Publications (1)

Publication Number Publication Date
DE3681902D1 true DE3681902D1 (de) 1991-11-14

Family

ID=17669422

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8686309764T Expired - Fee Related DE3681902D1 (de) 1985-12-17 1986-12-15 Einrichtung, um einen axial bewegbaren gegenstand in eine axial neutrale stellung zu zwingen.

Country Status (4)

Country Link
US (1) US4790628A (de)
EP (1) EP0228227B1 (de)
JP (1) JPS62141646A (de)
DE (1) DE3681902D1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0750528B2 (ja) * 1987-06-25 1995-05-31 三菱電機株式会社 対物レンズ駆動装置
US5107372A (en) * 1989-09-06 1992-04-21 Daniel Gelbart Focus servo actuator for moving lens scanners
US5319497A (en) * 1990-01-12 1994-06-07 Matsushita Electric Industrial Co., Ltd. Lens drive device with lens holder carrying drive flux generating magnets
US5046819A (en) * 1990-04-16 1991-09-10 International Business Machines Corporation Objective lens support having rotary and axial motions for use in an optical disk apparatus
KR920015291A (ko) * 1991-01-31 1992-08-26 강진구 광학기록 및 재생장치의 대물렌즈 구동수단
US5146126A (en) * 1991-09-05 1992-09-08 Hr Textron Inc. Adjustable rotor assembly
JPH05258325A (ja) * 1992-01-13 1993-10-08 Sharp Corp 対物レンズ駆動装置
DE4243067C2 (de) * 1992-01-13 2000-12-07 Sharp Kk Antriebsvorrichtung für eine Objektivlinse
JP2984526B2 (ja) * 1993-08-31 1999-11-29 日本電気株式会社 光ピックアップ装置
CN1056702C (zh) * 1993-10-13 2000-09-20 株式会社三协精机制作所 物镜驱动装置
JP2866584B2 (ja) * 1994-06-28 1999-03-08 株式会社三協精機製作所 対物レンズ駆動装置
JPH0815590A (ja) * 1994-06-29 1996-01-19 Olympus Optical Co Ltd 光学要素位置決め装置
EP0727776B1 (de) * 1995-02-20 2003-01-15 Mitsubishi Denki Kabushiki Kaisha Objektivlinsenantriebsvorrichtung und optische Informationsaufzeichnungs-/-wiedergabevorrichtung
JPH09153229A (ja) * 1995-11-30 1997-06-10 Nec Corp 光ヘッド装置
KR100298825B1 (ko) * 1996-08-19 2001-10-26 하시모토 야스고로 대물 렌즈 구동 장치 및 이를 이용한 광디스크 장치
JP3667704B2 (ja) * 2002-03-22 2005-07-06 三菱電機株式会社 光学素子駆動装置及び光ディスク装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57210456A (en) * 1981-06-22 1982-12-24 Sony Corp Objective lens device
US4553227A (en) * 1982-04-23 1985-11-12 Tokyo Shibaura Denki Kabushiki Kaisha Optical pickup
JPS58163908U (ja) * 1982-04-27 1983-11-01 株式会社三協精機製作所 対物レンズ駆動装置
JPS59104735A (ja) * 1982-12-08 1984-06-16 Sony Corp 対物レンズ駆動装置
JPS59229750A (ja) * 1983-06-10 1984-12-24 Seiko Instr & Electronics Ltd 対物レンズ装置
US4643522A (en) * 1983-08-03 1987-02-17 Sony Corporation Optical pickup having a driving unit for moving objective lens
JPS6089838A (ja) * 1983-10-24 1985-05-20 Asahi Optical Co Ltd 光学的情報記録再生装置における対物レンズ駆動装置のトラツク方向中立位置設定装置
JPS6089839A (ja) * 1983-10-24 1985-05-20 Asahi Optical Co Ltd 光学的情報記録再生装置における対物レンズ駆動装置のフオ−カス方向中立位置設定装置
JPH0731814B2 (ja) * 1983-12-28 1995-04-10 株式会社東芝 対物レンズ駆動装置
JPS61122941A (ja) * 1984-11-19 1986-06-10 Nippon Kogaku Kk <Nikon> 対物レンズ駆動装置

Also Published As

Publication number Publication date
EP0228227A2 (de) 1987-07-08
EP0228227B1 (de) 1991-10-09
JPS62141646A (ja) 1987-06-25
US4790628A (en) 1988-12-13
EP0228227A3 (en) 1988-03-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee