JPS57208641A - Multishaft driving device - Google Patents

Multishaft driving device

Info

Publication number
JPS57208641A
JPS57208641A JP9387281A JP9387281A JPS57208641A JP S57208641 A JPS57208641 A JP S57208641A JP 9387281 A JP9387281 A JP 9387281A JP 9387281 A JP9387281 A JP 9387281A JP S57208641 A JPS57208641 A JP S57208641A
Authority
JP
Japan
Prior art keywords
coil
coils
driven
unified
lens
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
JP9387281A
Other languages
Japanese (ja)
Inventor
Masayuki Inoue
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 JP9387281A priority Critical patent/JPS57208641A/en
Publication of JPS57208641A publication Critical patent/JPS57208641A/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
    • G11B7/0925—Electromechanical actuators for lens positioning
    • G11B7/0932—Details of sprung supports
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE:To drive an optical system, i.e., an object to be driven in the triaxial direction, by unifying a cylindrical coil, a flat coil having the coiling face formed along the side face of said cylindrical coil and an object to be driven and then inserting this unified matter into a magnetic gap having a magnetic flux in the direction orthogonal to each element. CONSTITUTION:A square bobbin 22 is provided to a coil holder 21 set to a lens holder 20 that holds a condenser lens 1, and a Z-axis direction driving coil 23 is wound round the side face of the bobbin 22. The coil 23 is unified with the X- axis direction driving coils 24 and 25 having the coiling face formed along two side faces orthogonal to the coil 23 and the Y-axis directiondriving coils 26 and 27 together. These unified coils are put into a magnetic gap of a magnetic circuit comprising a permanent magnet 28 having the magnetic flux in the direction orthgonal to each coil element and yokes 29 and 30. Then the control current is supplied to each of the coils 23-27, and accordingly the lens 1 is driven by the driving force received in the triaxial direction orthogonal to the axes X, Y and Z respectively.
JP9387281A 1981-06-19 1981-06-19 Multishaft driving device Pending JPS57208641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9387281A JPS57208641A (en) 1981-06-19 1981-06-19 Multishaft driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9387281A JPS57208641A (en) 1981-06-19 1981-06-19 Multishaft driving device

Publications (1)

Publication Number Publication Date
JPS57208641A true JPS57208641A (en) 1982-12-21

Family

ID=14094546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9387281A Pending JPS57208641A (en) 1981-06-19 1981-06-19 Multishaft driving device

Country Status (1)

Country Link
JP (1) JPS57208641A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557564A (en) * 1983-10-27 1985-12-10 U.S. Philips Corporation Movable scanning unit for an optical recording or playback apparatus
US4669823A (en) * 1983-10-31 1987-06-02 Hitachi, Ltd. Optical system drive for optical recording/reproducing apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5494007A (en) * 1978-01-05 1979-07-25 Olympus Optical Co Ltd Pickup for disc recorder recorded optically with information

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5494007A (en) * 1978-01-05 1979-07-25 Olympus Optical Co Ltd Pickup for disc recorder recorded optically with information

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4557564A (en) * 1983-10-27 1985-12-10 U.S. Philips Corporation Movable scanning unit for an optical recording or playback apparatus
US4669823A (en) * 1983-10-31 1987-06-02 Hitachi, Ltd. Optical system drive for optical recording/reproducing apparatus

Similar Documents

Publication Publication Date Title
EP0704955A3 (en)
DK0588478T3 (en) Electric stepper motor
US4755703A (en) Electric motor
JPS57208641A (en) Multishaft driving device
JPS55139071A (en) Two-axis feed type linear motor
US4433273A (en) Camera motor belt drive system
JPS5674080A (en) Linear pulse motor
KR920022223A (en) Optical system drive
JPS56122107A (en) Electromagnetic driving device
JPS5727442A (en) Objective lens driving device
JPS5720702A (en) Optical switch
JPS57151261A (en) Linear motor
JPS57100630A (en) Three-dimensional driving device
JPS5771530A (en) Pickup device
JPS5510236A (en) Electromagnetic pickup cartridge
JPS57145556A (en) Electric rotary machine
JPS57100629A (en) Focal point controller
JPS54109801A (en) Optical reader
JPS57127932A (en) Multiaxis driving device
JPH0314211B2 (en)
JPS5793330A (en) Electromagnetic driving device of program electromagnetic shutter
SU1265931A1 (en) D.c.electric motor
JPS56161616A (en) Polarized electromagnet
JPS57118611A (en) Bistable electromagnet device
JPH01232700A (en) Electromagnet for charged particle device