JPS6115498B2 - - Google Patents

Info

Publication number
JPS6115498B2
JPS6115498B2 JP56008394A JP839481A JPS6115498B2 JP S6115498 B2 JPS6115498 B2 JP S6115498B2 JP 56008394 A JP56008394 A JP 56008394A JP 839481 A JP839481 A JP 839481A JP S6115498 B2 JPS6115498 B2 JP S6115498B2
Authority
JP
Japan
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
JP56008394A
Other languages
Japanese (ja)
Other versions
JPS57123538A (en
Inventor
Riichi Saeki
Yoshio Myake
Toshio Takei
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56008394A priority Critical patent/JPS6115498B2/ja
Publication of JPS57123538A publication Critical patent/JPS57123538A/en
Publication of JPS6115498B2 publication Critical patent/JPS6115498B2/ja
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00Recording 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
    • G11B7/08Disposition or mounting of heads or light sources relatively to record carriers
    • G11B7/09Disposition 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
    • G11B7/0908Disposition 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 for focusing only
JP56008394A 1981-01-22 1981-01-22 Expired JPS6115498B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56008394A JPS6115498B2 (en) 1981-01-22 1981-01-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56008394A JPS6115498B2 (en) 1981-01-22 1981-01-22

Publications (2)

Publication Number Publication Date
JPS57123538A JPS57123538A (en) 1982-08-02
JPS6115498B2 true JPS6115498B2 (en) 1986-04-24

Family

ID=11691968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56008394A Expired JPS6115498B2 (en) 1981-01-22 1981-01-22

Country Status (1)

Country Link
JP (1) JPS6115498B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0345313B2 (en) * 1986-05-01 1991-07-10 Heidon Shuwaitsuaa Corp

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH059855B2 (en) * 1983-02-18 1993-02-08 Canon Kk
JPH0740375B2 (en) * 1985-11-30 1995-05-01 株式会社東芝 Optical head
JPS63153732A (en) * 1986-12-18 1988-06-27 Canon Electronics Inc Focus detector
WO1996004649A1 (en) * 1994-07-29 1996-02-15 Sony Corporation Optical pickup apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0345313B2 (en) * 1986-05-01 1991-07-10 Heidon Shuwaitsuaa Corp

Also Published As

Publication number Publication date
JPS57123538A (en) 1982-08-02

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