JPS56165938A - Optical scanner - Google Patents

Optical scanner

Info

Publication number
JPS56165938A
JPS56165938A JP6942380A JP6942380A JPS56165938A JP S56165938 A JPS56165938 A JP S56165938A JP 6942380 A JP6942380 A JP 6942380A JP 6942380 A JP6942380 A JP 6942380A JP S56165938 A JPS56165938 A JP S56165938A
Authority
JP
Japan
Prior art keywords
vibrators
piezoelectric bimorph
vibrations
lens
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.)
Granted
Application number
JP6942380A
Other languages
Japanese (ja)
Other versions
JPS6319937B2 (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/en
Publication of JPS56165938A publication Critical patent/JPS56165938A/en
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—Piezo-electric actuators

Abstract

PURPOSE:To use piezoelectric bimorph vibrators which displace largely with small volume and miniaturize an optical deflector by vibrating a condenser lens which condenses a light spot to information tracks by means of the piezoelectric bimorph vibrators. CONSTITUTION:Two piezoelectric bimorph vibrators 1, 1 which vibrate a condenser lens 2 are mounted to connecting members 5,...5 in such a manner that the directions and bearings of their vibrations are the same, and these are so arranged as to vibrate the lens 2 by the above-mentioned vibrations. In this case, said vibrators 1, 1 are vibrated at the frequencies equal to the resonance frequencies of the system assumed by these vibrators 1, 1, and the lens 2 or the like. As a result, the vibrations of sufficiently large displacements are applied to the condenser lens with the piezoelectric bimorph elements of small volume and the optical deflector is miniaturized.
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 true JPS56165938A (en) 1981-12-19
JPS6319937B2 JPS6319937B2 (en) 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966442A (en) * 1982-10-07 1984-04-14 Daikin Ind Ltd Fluororubber composition

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48101103A (en) * 1972-02-29 1973-12-20
JPS54146612A (en) * 1978-05-10 1979-11-16 Olympus Optical Co Ltd Optical information read device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS48101103A (en) * 1972-02-29 1973-12-20
JPS54146612A (en) * 1978-05-10 1979-11-16 Olympus Optical Co Ltd Optical information read device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5966442A (en) * 1982-10-07 1984-04-14 Daikin Ind Ltd Fluororubber composition
JPH0334497B2 (en) * 1982-10-07 1991-05-22 Daikin Ind Ltd

Also Published As

Publication number Publication date
JPS6319937B2 (en) 1988-04-25

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