JPS57100630A - Three-dimensional driving device - Google Patents

Three-dimensional driving device

Info

Publication number
JPS57100630A
JPS57100630A JP17583580A JP17583580A JPS57100630A JP S57100630 A JPS57100630 A JP S57100630A JP 17583580 A JP17583580 A JP 17583580A JP 17583580 A JP17583580 A JP 17583580A JP S57100630 A JPS57100630 A JP S57100630A
Authority
JP
Japan
Prior art keywords
axial
coils
coil holder
magnetic gap
yokes
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
JP17583580A
Other languages
Japanese (ja)
Inventor
Masayuki Inoue
Hideo Onuki
Nobutaka 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 JP17583580A priority Critical patent/JPS57100630A/en
Publication of JPS57100630A publication Critical patent/JPS57100630A/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
    • G11B7/0935—Details of the moving parts

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To move an optical system in three axial directions with simple constitution by providing coils, crossing one another at right angles, in a magnetic gap formed by arranging four permanent magnets, sandwiched between two yokes, with their magnetizing directions opposite. CONSTITUTION:On top and reverse surfaces of four permanent magnets 21- 24, yokes 25-32 are fixed with the opposite polarities to one another, thus forming a magnetic gap. To a coil holder 41, coils 33-36, 37-1-40-1, and 37-2-40-2 whose winding surfaces are at right angles are fixed in one body and arranged in the magnetic gap. Then, a lens holder which holds a condenser lens 1 is supported coaxially with the coil holder 41. When the Z-directional driving coils 33-36 are supplied with currents as shown by arrows, the coil holder 41 is displaced in a Z-axial direction. When X-axial and Y-axial coils 37 and 38, and 39 and 40 are fed with currents as shown by arrows, the coil holder 41 is displaced in respective axial directions. Thus, an optical system is moved in three axial directions with the simple constitution.
JP17583580A 1980-12-15 1980-12-15 Three-dimensional driving device Pending JPS57100630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17583580A JPS57100630A (en) 1980-12-15 1980-12-15 Three-dimensional driving device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17583580A JPS57100630A (en) 1980-12-15 1980-12-15 Three-dimensional driving device

Publications (1)

Publication Number Publication Date
JPS57100630A true JPS57100630A (en) 1982-06-22

Family

ID=16003044

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17583580A Pending JPS57100630A (en) 1980-12-15 1980-12-15 Three-dimensional driving device

Country Status (1)

Country Link
JP (1) JPS57100630A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4782475A (en) * 1986-12-22 1988-11-01 Eastman Kodak Company Flexure supported read head
US5138293A (en) * 1990-09-17 1992-08-11 Ogura Clutch, Co., Ltd. Terminal connection structure of electromagnetic coupling device
JP2008140437A (en) * 2006-11-30 2008-06-19 Konica Minolta Opto Inc Lens drive unit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4782475A (en) * 1986-12-22 1988-11-01 Eastman Kodak Company Flexure supported read head
US5138293A (en) * 1990-09-17 1992-08-11 Ogura Clutch, Co., Ltd. Terminal connection structure of electromagnetic coupling device
JP2008140437A (en) * 2006-11-30 2008-06-19 Konica Minolta Opto Inc Lens drive unit

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