JPS6130327B2 - - Google Patents

Info

Publication number
JPS6130327B2
JPS6130327B2 JP56031790A JP3179081A JPS6130327B2 JP S6130327 B2 JPS6130327 B2 JP S6130327B2 JP 56031790 A JP56031790 A JP 56031790A JP 3179081 A JP3179081 A JP 3179081A JP S6130327 B2 JPS6130327 B2 JP S6130327B2
Authority
JP
Japan
Prior art keywords
voice coil
actuator
light irradiation
irradiation system
circuit
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
JP56031790A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57147142A (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 JP3179081A priority Critical patent/JPS57147142A/ja
Publication of JPS57147142A publication Critical patent/JPS57147142A/ja
Publication of JPS6130327B2 publication Critical patent/JPS6130327B2/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
    • 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
    • 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
    • G11B7/0932—Details of sprung supports

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP3179081A 1981-03-04 1981-03-04 Pickup device Granted JPS57147142A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3179081A JPS57147142A (en) 1981-03-04 1981-03-04 Pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3179081A JPS57147142A (en) 1981-03-04 1981-03-04 Pickup device

Publications (2)

Publication Number Publication Date
JPS57147142A JPS57147142A (en) 1982-09-10
JPS6130327B2 true JPS6130327B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1986-07-12

Family

ID=12340854

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3179081A Granted JPS57147142A (en) 1981-03-04 1981-03-04 Pickup device

Country Status (1)

Country Link
JP (1) JPS57147142A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0833054B2 (ja) * 1989-03-30 1996-03-29 株式会社平井技研 屋根装置
JP2742715B2 (ja) * 1989-10-17 1998-04-22 株式会社小野測器 機械特性評価用光ピックアップの校正方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5161724A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-11-27 1976-05-28 Nippon Musical Instruments Mfg

Also Published As

Publication number Publication date
JPS57147142A (en) 1982-09-10

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