JPS6260733B2 - - Google Patents

Info

Publication number
JPS6260733B2
JPS6260733B2 JP55068339A JP6833980A JPS6260733B2 JP S6260733 B2 JPS6260733 B2 JP S6260733B2 JP 55068339 A JP55068339 A JP 55068339A JP 6833980 A JP6833980 A JP 6833980A JP S6260733 B2 JPS6260733 B2 JP S6260733B2
Authority
JP
Japan
Prior art keywords
objective lens
disk
piezoelectric element
laser beam
point
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
JP55068339A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56163530A (en
Inventor
Kanji Nishii
Yoshikazu Goto
Shunji Harikae
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP6833980A priority Critical patent/JPS56163530A/ja
Publication of JPS56163530A publication Critical patent/JPS56163530A/ja
Publication of JPS6260733B2 publication Critical patent/JPS6260733B2/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
    • G11B7/0937—Piezoelectric actuators

Landscapes

  • Mechanical Optical Scanning Systems (AREA)
  • Optical Recording Or Reproduction (AREA)
JP6833980A 1980-05-21 1980-05-21 Optical recorder and reproducer Granted JPS56163530A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6833980A JPS56163530A (en) 1980-05-21 1980-05-21 Optical recorder and reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6833980A JPS56163530A (en) 1980-05-21 1980-05-21 Optical recorder and reproducer

Publications (2)

Publication Number Publication Date
JPS56163530A JPS56163530A (en) 1981-12-16
JPS6260733B2 true JPS6260733B2 (fr) 1987-12-17

Family

ID=13370978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6833980A Granted JPS56163530A (en) 1980-05-21 1980-05-21 Optical recorder and reproducer

Country Status (1)

Country Link
JP (1) JPS56163530A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6241662U (fr) * 1985-08-30 1987-03-12

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48101103A (fr) * 1972-02-29 1973-12-20
JPS54155802A (en) * 1978-05-30 1979-12-08 Olympus Optical Co Ltd Objective lens driving device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48101103A (fr) * 1972-02-29 1973-12-20
JPS54155802A (en) * 1978-05-30 1979-12-08 Olympus Optical Co Ltd Objective lens driving device

Also Published As

Publication number Publication date
JPS56163530A (en) 1981-12-16

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