JPS5794939A - Three-directional driven-body driver - Google Patents

Three-directional driven-body driver

Info

Publication number
JPS5794939A
JPS5794939A JP17097180A JP17097180A JPS5794939A JP S5794939 A JPS5794939 A JP S5794939A JP 17097180 A JP17097180 A JP 17097180A JP 17097180 A JP17097180 A JP 17097180A JP S5794939 A JPS5794939 A JP S5794939A
Authority
JP
Japan
Prior art keywords
axial driving
axial
driving coils
coils
coil
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.)
Pending
Application number
JP17097180A
Other languages
Japanese (ja)
Inventor
Hideo Onuki
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP17097180A priority Critical patent/JPS5794939A/en
Priority to US06/324,442 priority patent/US4592037A/en
Priority to DE8181305578T priority patent/DE3175073D1/en
Priority to AT81305578T priority patent/ATE21294T1/en
Priority to EP81305578A priority patent/EP0053476B1/en
Priority to CA000391118A priority patent/CA1177167A/en
Publication of JPS5794939A publication Critical patent/JPS5794939A/en
Pending legal-status Critical Current

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)
  • Mechanical Optical Scanning Systems (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To eliminate the unnecessary resonance of a closed air room and to reduce the size of a driver by driving an optical system by orthogonal magnetic fields in two directions and three driving coils provided in them. CONSTITUTION:An oscillation system consists of Z-axial driving coils 12-1 and 12-2, X-axial driving coils 13-1 and 13-2, Y-axial driving coils 14-1 and 14-2, and a driven body 15 including an optical system, and the Z-axial driving coil 12 and X-axial driving coil 13 are overlapped so that the winding axes are in parallel and the winding directins are partially at right angles. The X-axial driving coil 14 is so arranged that the winding axes of the Z-axial and X-axial driving coils 12 and 13 cross at right angles. The X-axial driving coil 13 is arranged across a couple of permanent magnets 1 and 2, and makes connections between the Z-axial driving coils 12-1 and 12-2 and Y-axial driving coils 14-1 and 14-2.
JP17097180A 1980-11-28 1980-12-05 Three-directional driven-body driver Pending JPS5794939A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP17097180A JPS5794939A (en) 1980-12-05 1980-12-05 Three-directional driven-body driver
US06/324,442 US4592037A (en) 1980-11-28 1981-11-24 Device for displacing a pickup head in multi-axial directions
DE8181305578T DE3175073D1 (en) 1980-11-28 1981-11-25 Device for displacing a pickup head in at least two mutually perpendicular directions
AT81305578T ATE21294T1 (en) 1980-11-28 1981-11-25 DEVICE FOR MOVEMENT OF A RECORDING HEAD IN AT LEAST TWO DIRECTIONS ORTHOGONAL TO EACH OTHER.
EP81305578A EP0053476B1 (en) 1980-11-28 1981-11-25 Device for displacing a pickup head in at least two mutually perpendicular directions
CA000391118A CA1177167A (en) 1980-11-28 1981-11-27 Pickup actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17097180A JPS5794939A (en) 1980-12-05 1980-12-05 Three-directional driven-body driver

Publications (1)

Publication Number Publication Date
JPS5794939A true JPS5794939A (en) 1982-06-12

Family

ID=15914753

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17097180A Pending JPS5794939A (en) 1980-11-28 1980-12-05 Three-directional driven-body driver

Country Status (1)

Country Link
JP (1) JPS5794939A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887888A (en) * 1984-01-30 1989-12-19 Canon Kabushiki Kaisha Objective lens driving device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4887888A (en) * 1984-01-30 1989-12-19 Canon Kabushiki Kaisha Objective lens driving device

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