JPH0435815B2 - - Google Patents

Info

Publication number
JPH0435815B2
JPH0435815B2 JP58198764A JP19876483A JPH0435815B2 JP H0435815 B2 JPH0435815 B2 JP H0435815B2 JP 58198764 A JP58198764 A JP 58198764A JP 19876483 A JP19876483 A JP 19876483A JP H0435815 B2 JPH0435815 B2 JP H0435815B2
Authority
JP
Japan
Prior art keywords
neutral position
objective lens
rotating body
magnetic material
position setting
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 - Lifetime
Application number
JP58198764A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6089839A (ja
Inventor
Hiroshi Kokado
Takashi Takishima
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.)
Pentax Corp
Original Assignee
Asahi Kogaku Kogyo 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 Asahi Kogaku Kogyo Co Ltd filed Critical Asahi Kogaku Kogyo Co Ltd
Priority to JP19876483A priority Critical patent/JPS6089839A/ja
Publication of JPS6089839A publication Critical patent/JPS6089839A/ja
Publication of JPH0435815B2 publication Critical patent/JPH0435815B2/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
    • G11B7/0933—Details of stationary parts

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP19876483A 1983-10-24 1983-10-24 光学的情報記録再生装置における対物レンズ駆動装置のフオ−カス方向中立位置設定装置 Granted JPS6089839A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19876483A JPS6089839A (ja) 1983-10-24 1983-10-24 光学的情報記録再生装置における対物レンズ駆動装置のフオ−カス方向中立位置設定装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19876483A JPS6089839A (ja) 1983-10-24 1983-10-24 光学的情報記録再生装置における対物レンズ駆動装置のフオ−カス方向中立位置設定装置

Publications (2)

Publication Number Publication Date
JPS6089839A JPS6089839A (ja) 1985-05-20
JPH0435815B2 true JPH0435815B2 (en]) 1992-06-12

Family

ID=16396551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19876483A Granted JPS6089839A (ja) 1983-10-24 1983-10-24 光学的情報記録再生装置における対物レンズ駆動装置のフオ−カス方向中立位置設定装置

Country Status (1)

Country Link
JP (1) JPS6089839A (en])

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0752516B2 (ja) * 1987-02-24 1995-06-05 三菱電機株式会社 対物レンズ駆動装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6131385Y2 (en]) * 1980-12-22 1986-09-12

Also Published As

Publication number Publication date
JPS6089839A (ja) 1985-05-20

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