KR900008082B1 - Operating apparatus for objective lens - Google Patents

Operating apparatus for objective lens

Info

Publication number
KR900008082B1
KR900008082B1 KR8611059A KR860011059A KR900008082B1 KR 900008082 B1 KR900008082 B1 KR 900008082B1 KR 8611059 A KR8611059 A KR 8611059A KR 860011059 A KR860011059 A KR 860011059A KR 900008082 B1 KR900008082 B1 KR 900008082B1
Authority
KR
South Korea
Prior art keywords
magnet
section
central
sections
cylindrical yoke
Prior art date
Application number
KR8611059A
Other languages
English (en)
Other versions
KR870006531A (ko
Inventor
Kengirowoo Kime
Shigegaz Sagabe
Akira Hashimodo
Doshya Madojagi
Original Assignee
Mitsubishi Electric Corp
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
Priority claimed from JP29637885A external-priority patent/JPS62154331A/ja
Priority claimed from JP29638385A external-priority patent/JPS62154334A/ja
Priority claimed from JP60296382A external-priority patent/JPS62154333A/ja
Priority claimed from JP60296376A external-priority patent/JPS62154330A/ja
Priority claimed from JP60296377A external-priority patent/JP2549837B2/ja
Priority claimed from JP61062655A external-priority patent/JPS62219338A/ja
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of KR870006531A publication Critical patent/KR870006531A/ko
Application granted granted Critical
Publication of KR900008082B1 publication Critical patent/KR900008082B1/ko

Links

Classifications

    • 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
    • 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
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Optical Recording Or Reproduction (AREA)
KR8611059A 1985-12-27 1986-12-22 Operating apparatus for objective lens KR900008082B1 (en)

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
JP60-296376 1985-12-27
JP60-296383 1985-12-27
JP60-296377 1985-12-27
JP29637885A JPS62154331A (ja) 1985-12-27 1985-12-27 対物レンズ駆動装置
JP29638385A JPS62154334A (ja) 1985-12-27 1985-12-27 対物レンズ駆動装置
JP60296382A JPS62154333A (ja) 1985-12-27 1985-12-27 対物レンズ駆動装置
JP60-296378 1985-12-27
JP60-296382 1985-12-27
JP60296376A JPS62154330A (ja) 1985-12-27 1985-12-27 対物レンズ駆動装置
JP60296377A JP2549837B2 (ja) 1985-12-27 1985-12-27 対物レンズ駆動装置
JP61-62655 1986-03-20
JP61062655A JPS62219338A (ja) 1986-03-20 1986-03-20 対物レンズ駆動装置

Publications (2)

Publication Number Publication Date
KR870006531A KR870006531A (ko) 1987-07-13
KR900008082B1 true KR900008082B1 (en) 1990-10-31

Family

ID=27550895

Family Applications (1)

Application Number Title Priority Date Filing Date
KR8611059A KR900008082B1 (en) 1985-12-27 1986-12-22 Operating apparatus for objective lens

Country Status (4)

Country Link
US (1) US4792935A (ko)
EP (1) EP0228055B1 (ko)
KR (1) KR900008082B1 (ko)
DE (1) DE3684124D1 (ko)

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
EP0350225B1 (en) * 1988-07-07 1994-01-26 Oki Electric Industry Company, Limited Optical head apparatus
DE69030514T2 (de) * 1989-02-10 1997-11-13 Toshiba Kawasaki Kk Gerät zum Antreiben einer Objektivlinse
JPH02216627A (ja) * 1989-02-15 1990-08-29 Mitsubishi Electric Corp 光ヘッド
JPH0734495Y2 (ja) * 1989-05-09 1995-08-02 パイオニア株式会社 光学式ピックアップ
US5293363A (en) * 1989-10-13 1994-03-08 Mitsubishi Denki Kabushiki Kaisha Optical head apparatus with light weight movable lens holder
US5319497A (en) * 1990-01-12 1994-06-07 Matsushita Electric Industrial Co., Ltd. Lens drive device with lens holder carrying drive flux generating magnets
US5416756A (en) * 1991-11-07 1995-05-16 Mitsubishi Denki Kabushiki Kaisha Lens actuating system with improved frequency response for optical disk drive
US5563871A (en) * 1993-11-09 1996-10-08 International Business Machines Corporation. Rotary actuator with a magnetic bias bearing configuration for rotating an optical element in an optical data storage system
DE69627962T2 (de) * 1995-11-10 2004-03-11 Kabushiki Kaisha Toshiba, Kawasaki Antriebsvorrichtung für Objektivlinse
US5864523A (en) * 1995-11-10 1999-01-26 Kabushiki Kaisha Toshiba Objective lens driving apparatus
FR2767611B1 (fr) * 1997-08-22 1999-10-29 Sonceboz Actionneur electromagnetique a deux pieces mobiles en opposition de phase
TW360400U (en) * 1997-10-30 1999-06-01 Ind Tech Res Inst Magnetic floating actuator
JP2000353330A (ja) 1999-06-11 2000-12-19 Sony Corp 対物レンズ駆動装置
US6785202B1 (en) * 1999-08-30 2004-08-31 Acute Applied Technologies, Inc. Magnetic restoring device of an actuator
FR2971875B1 (fr) * 2011-02-23 2017-11-03 Mobiclip Dispositif et procede de gestion de la position du plan focal dans une scene stereoscopique

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1119992B (de) * 1956-03-29 1961-12-21 Siemens Elektrogeraete Gmbh Elektrodynamischer Schwingankerantrieb
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
NL8202451A (nl) 1982-06-17 1984-01-16 Philips Nv Optische inrichting.
JPS6032139A (ja) * 1983-07-29 1985-02-19 Sharp Corp 対物レンズ駆動装置
JPH064415Y2 (ja) * 1984-04-23 1994-02-02 パイオニア株式会社 レンズ駆動装置
JPH042420Y2 (ko) * 1984-09-28 1992-01-28
JP3161055B2 (ja) 1992-07-15 2001-04-25 株式会社デンソー 車両用空調装置

Also Published As

Publication number Publication date
EP0228055A3 (en) 1988-03-30
US4792935A (en) 1988-12-20
EP0228055B1 (en) 1992-03-04
EP0228055A2 (en) 1987-07-08
DE3684124D1 (de) 1992-04-09
KR870006531A (ko) 1987-07-13

Similar Documents

Publication Publication Date Title
KR900008082B1 (en) Operating apparatus for objective lens
EP0228154B1 (en) Magnetic field generating device for nmr-ct
GR3003349T3 (en) Magnetic bearing for the active centering in at least one axe of a mobile body according to another body
DK0588478T3 (da) Elektrisk stepmotor
CA2120171A1 (en) Linear electromagnetic driving apparatus and use of same for lens adjustment
GB2294595B (en) Linear motor for extended travel
ES8406769A1 (es) Un dispositivo electrodinamico para trasladar un objetivo que es electrodinamicamente movil
JPS5583454A (en) Moving coil type linear motor
JPS5583453A (en) Moving coil type linear motor
US4233476A (en) Moving coil type cartridge
JPS55139071A (en) Two-axis feed type linear motor
JPS57151261A (en) Linear motor
TW358258B (en) Hybrid-type stepping motor
KR850004839A (ko) 전자 광학장치
JPS57100630A (en) Three-dimensional driving device
JPS6484441A (en) Objective lens driving device
JPS56148744A (en) Objective lens driving device
JPS57100629A (en) Focal point controller
SU1179442A1 (ru) Устройство дл намагничивани многополюсной магнитной системы
JPS57111834A (en) Lens driving device
CA2108157A1 (en) Permanent magnet assembly
JPS6427038A (en) Voice coil type actuator
JPS58175810A (ja) 脱磁器
JPS5723396A (en) Field system device
WO2002054442A3 (en) Ion beam collimating system

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
G160 Decision to publish patent application
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20061026

Year of fee payment: 17

EXPY Expiration of term