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JPS57189105A - Driving device for objective lens - Google Patents

Driving device for objective lens

Info

Publication number
JPS57189105A
JPS57189105A JP7409181A JP7409181A JPS57189105A JP S57189105 A JPS57189105 A JP S57189105A JP 7409181 A JP7409181 A JP 7409181A JP 7409181 A JP7409181 A JP 7409181A JP S57189105 A JPS57189105 A JP S57189105A
Authority
JP
Japan
Prior art keywords
magnetic
objective lens
driving device
fixed
loop
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
JP7409181A
Other languages
Japanese (ja)
Inventor
Hisatsune Tsuda
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.)
Olympus Corp
Original Assignee
Olympus Corp
Olympus Optical Co 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 Olympus Corp, Olympus Optical Co Ltd filed Critical Olympus Corp
Priority to JP7409181A priority Critical patent/JPS57189105A/en
Publication of JPS57189105A publication Critical patent/JPS57189105A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To obtain a driving device with less magnetic loss, by performing magnetic shield on the surface other than parts required for the specified magnetic loop formation for a fixed magnetic device and a moving magnetic member for objective lens driving. CONSTITUTION:On the surface of a fixed magnetic device 1 and a moving magnetic member 2 not contributing to the formation of a magnetic loop (a) with the device 1 and the member 2 constituting an objective lens driving device and a magnetic loop (a') generated from fixed coils 3 and 3' wound around the device 1, magnetic shield films 24 and 24' as shown in hatched lines are provided. That is, all the surfaces not wound with the fixed coils 3 and 3' of the device 1 and all side surfaces other than magnetic flux interlinking surfaces (upper and lower surfaces) of the member 2 are covered with the magnetic shield members 24 and 24'.
JP7409181A 1981-05-19 1981-05-19 Driving device for objective lens Pending JPS57189105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7409181A JPS57189105A (en) 1981-05-19 1981-05-19 Driving device for objective lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7409181A JPS57189105A (en) 1981-05-19 1981-05-19 Driving device for objective lens

Publications (1)

Publication Number Publication Date
JPS57189105A true JPS57189105A (en) 1982-11-20

Family

ID=13537157

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7409181A Pending JPS57189105A (en) 1981-05-19 1981-05-19 Driving device for objective lens

Country Status (1)

Country Link
JP (1) JPS57189105A (en)

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