JPH0447899B2 - - Google Patents

Info

Publication number
JPH0447899B2
JPH0447899B2 JP59082395A JP8239584A JPH0447899B2 JP H0447899 B2 JPH0447899 B2 JP H0447899B2 JP 59082395 A JP59082395 A JP 59082395A JP 8239584 A JP8239584 A JP 8239584A JP H0447899 B2 JPH0447899 B2 JP H0447899B2
Authority
JP
Japan
Prior art keywords
lens
coil
medium surface
magnetic field
coils
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
JP59082395A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6022744A (ja
Inventor
Shunpei Tanaka
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 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 Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP8239584A priority Critical patent/JPS6022744A/ja
Publication of JPS6022744A publication Critical patent/JPS6022744A/ja
Publication of JPH0447899B2 publication Critical patent/JPH0447899B2/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
    • G11B7/093—Electromechanical actuators for lens positioning for focusing and tracking

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP8239584A 1984-04-24 1984-04-24 ピツクアツプ装置 Granted JPS6022744A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8239584A JPS6022744A (ja) 1984-04-24 1984-04-24 ピツクアツプ装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8239584A JPS6022744A (ja) 1984-04-24 1984-04-24 ピツクアツプ装置

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP2678A Division JPS5494007A (en) 1978-01-05 1978-01-05 Pickup for disc recorder recorded optically with information

Publications (2)

Publication Number Publication Date
JPS6022744A JPS6022744A (ja) 1985-02-05
JPH0447899B2 true JPH0447899B2 (US20100268047A1-20101021-C00003.png) 1992-08-05

Family

ID=13773395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8239584A Granted JPS6022744A (ja) 1984-04-24 1984-04-24 ピツクアツプ装置

Country Status (1)

Country Link
JP (1) JPS6022744A (US20100268047A1-20101021-C00003.png)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2537397B2 (ja) * 1989-03-30 1996-09-25 旭光学工業株式会社 光学式ピックアップ装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114102A (en) * 1975-04-01 1976-10-07 Victor Co Of Japan Ltd Signal reading and control device for disc player

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138326Y2 (US20100268047A1-20101021-C00003.png) * 1972-06-30 1976-09-20

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51114102A (en) * 1975-04-01 1976-10-07 Victor Co Of Japan Ltd Signal reading and control device for disc player

Also Published As

Publication number Publication date
JPS6022744A (ja) 1985-02-05

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