JPH0440784B2 - - Google Patents

Info

Publication number
JPH0440784B2
JPH0440784B2 JP56079134A JP7913481A JPH0440784B2 JP H0440784 B2 JPH0440784 B2 JP H0440784B2 JP 56079134 A JP56079134 A JP 56079134A JP 7913481 A JP7913481 A JP 7913481A JP H0440784 B2 JPH0440784 B2 JP H0440784B2
Authority
JP
Japan
Prior art keywords
bobbin
objective lens
yoke
magnet
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.)
Expired - Lifetime
Application number
JP56079134A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57195339A (en
Inventor
Takahiro Kato
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic 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
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP7913481A priority Critical patent/JPS57195339A/ja
Publication of JPS57195339A publication Critical patent/JPS57195339A/ja
Publication of JPH0440784B2 publication Critical patent/JPH0440784B2/ja
Granted 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
    • G11B7/0929—Electromechanical actuators for lens positioning for tracking only
    • 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

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
JP7913481A 1981-05-27 1981-05-27 Objective lens driver Granted JPS57195339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7913481A JPS57195339A (en) 1981-05-27 1981-05-27 Objective lens driver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7913481A JPS57195339A (en) 1981-05-27 1981-05-27 Objective lens driver

Publications (2)

Publication Number Publication Date
JPS57195339A JPS57195339A (en) 1982-12-01
JPH0440784B2 true JPH0440784B2 (en]) 1992-07-06

Family

ID=13681478

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7913481A Granted JPS57195339A (en) 1981-05-27 1981-05-27 Objective lens driver

Country Status (1)

Country Link
JP (1) JPS57195339A (en])

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3924189A1 (de) * 1989-07-21 1991-01-24 Thomson Brandt Gmbh Halterung fuer ein optisches element
US5056902A (en) * 1990-04-25 1991-10-15 Smith & Nephew Dyonics, Inc. Magnetically coupled lens actuator
US5836867A (en) * 1996-11-27 1998-11-17 Linvatec Corporation Magnetic coupling assembly for endoscope
JP2008112003A (ja) * 2006-10-31 2008-05-15 Matsushita Electric Ind Co Ltd レンズアクチュエータ
WO2008053427A1 (en) * 2006-11-02 2008-05-08 Koninklijke Philips Electronics N.V. Actuator assembly and opto-mechanical device comprising an actuator assembly
DE102011078969B4 (de) * 2011-07-11 2019-02-21 Olympus Winter & Ibe Gmbh Berührungslose Magnetkupplung für ein Endoskop und Endoskop
US8840543B2 (en) 2011-12-07 2014-09-23 Stryker Corporation Parfocal coupler for endoscopic viewing system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52139312A (en) * 1976-05-17 1977-11-21 Sony Corp Recording/reproducing device
JPS6141429Y2 (en]) * 1979-08-27 1986-11-25

Also Published As

Publication number Publication date
JPS57195339A (en) 1982-12-01

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