JPS6319937B2 - - Google Patents

Info

Publication number
JPS6319937B2
JPS6319937B2 JP55069423A JP6942380A JPS6319937B2 JP S6319937 B2 JPS6319937 B2 JP S6319937B2 JP 55069423 A JP55069423 A JP 55069423A JP 6942380 A JP6942380 A JP 6942380A JP S6319937 B2 JPS6319937 B2 JP S6319937B2
Authority
JP
Japan
Prior art keywords
piezoelectric bimorph
light spot
lens
information track
condenser lens
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
JP55069423A
Other languages
English (en)
Japanese (ja)
Other versions
JPS56165938A (en
Inventor
Haruhisa Takiguchi
Yukio Kurata
Kaneki 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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP6942380A priority Critical patent/JPS56165938A/ja
Publication of JPS56165938A publication Critical patent/JPS56165938A/ja
Publication of JPS6319937B2 publication Critical patent/JPS6319937B2/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)
JP6942380A 1980-05-23 1980-05-23 Optical scanner Granted JPS56165938A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6942380A JPS56165938A (en) 1980-05-23 1980-05-23 Optical scanner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6942380A JPS56165938A (en) 1980-05-23 1980-05-23 Optical scanner

Publications (2)

Publication Number Publication Date
JPS56165938A JPS56165938A (en) 1981-12-19
JPS6319937B2 true JPS6319937B2 (en, 2012) 1988-04-25

Family

ID=13402187

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6942380A Granted JPS56165938A (en) 1980-05-23 1980-05-23 Optical scanner

Country Status (1)

Country Link
JP (1) JPS56165938A (en, 2012)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966442A (ja) * 1982-10-07 1984-04-14 Daikin Ind Ltd フツ素ゴム組成物

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2174353A5 (en, 2012) * 1972-02-29 1973-10-12 Thomson Csf
JPS54146612A (en) * 1978-05-10 1979-11-16 Olympus Optical Co Ltd Optical information read device

Also Published As

Publication number Publication date
JPS56165938A (en) 1981-12-19

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