JPS635806B2 - - Google Patents

Info

Publication number
JPS635806B2
JPS635806B2 JP3850582A JP3850582A JPS635806B2 JP S635806 B2 JPS635806 B2 JP S635806B2 JP 3850582 A JP3850582 A JP 3850582A JP 3850582 A JP3850582 A JP 3850582A JP S635806 B2 JPS635806 B2 JP S635806B2
Authority
JP
Japan
Prior art keywords
tracking
fixed
focus
optical pickup
permanent magnet
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
Application number
JP3850582A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58155529A (ja
Inventor
Tsutomu Matsui
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.)
Akai Electric Co Ltd
Original Assignee
Akai Electric 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 Akai Electric Co Ltd filed Critical Akai Electric Co Ltd
Priority to JP3850582A priority Critical patent/JPS58155529A/ja
Publication of JPS58155529A publication Critical patent/JPS58155529A/ja
Publication of JPS635806B2 publication Critical patent/JPS635806B2/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

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP3850582A 1982-03-11 1982-03-11 光ピツクアツプ装置の対物レンズ上下左右移動装置 Granted JPS58155529A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3850582A JPS58155529A (ja) 1982-03-11 1982-03-11 光ピツクアツプ装置の対物レンズ上下左右移動装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3850582A JPS58155529A (ja) 1982-03-11 1982-03-11 光ピツクアツプ装置の対物レンズ上下左右移動装置

Publications (2)

Publication Number Publication Date
JPS58155529A JPS58155529A (ja) 1983-09-16
JPS635806B2 true JPS635806B2 (en]) 1988-02-05

Family

ID=12527122

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3850582A Granted JPS58155529A (ja) 1982-03-11 1982-03-11 光ピツクアツプ装置の対物レンズ上下左右移動装置

Country Status (1)

Country Link
JP (1) JPS58155529A (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10696590B2 (en) 2012-06-01 2020-06-30 Db Group (Holdings) Ltd Activator composition and method for making concrete

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4818066A (en) * 1984-01-30 1989-04-04 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
US10696590B2 (en) 2012-06-01 2020-06-30 Db Group (Holdings) Ltd Activator composition and method for making concrete

Also Published As

Publication number Publication date
JPS58155529A (ja) 1983-09-16

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