JPS6258050B2 - - Google Patents

Info

Publication number
JPS6258050B2
JPS6258050B2 JP10255682A JP10255682A JPS6258050B2 JP S6258050 B2 JPS6258050 B2 JP S6258050B2 JP 10255682 A JP10255682 A JP 10255682A JP 10255682 A JP10255682 A JP 10255682A JP S6258050 B2 JPS6258050 B2 JP S6258050B2
Authority
JP
Japan
Prior art keywords
frame
electromagnetic
focusing lens
electromagnetic yoke
solenoid coil
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
JP10255682A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58220253A (ja
Inventor
Akinori Watabe
Kikuji Kato
Yoshiharu Tanaka
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.)
Mansei Kogyo KK
Nippon Telegraph and Telephone Corp
Original Assignee
Mansei Kogyo KK
Nippon Telegraph and Telephone 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 Mansei Kogyo KK, Nippon Telegraph and Telephone Corp filed Critical Mansei Kogyo KK
Priority to JP10255682A priority Critical patent/JPS58220253A/ja
Publication of JPS58220253A publication Critical patent/JPS58220253A/ja
Publication of JPS6258050B2 publication Critical patent/JPS6258050B2/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

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP10255682A 1982-06-15 1982-06-15 光学ヘツド Granted JPS58220253A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10255682A JPS58220253A (ja) 1982-06-15 1982-06-15 光学ヘツド

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10255682A JPS58220253A (ja) 1982-06-15 1982-06-15 光学ヘツド

Publications (2)

Publication Number Publication Date
JPS58220253A JPS58220253A (ja) 1983-12-21
JPS6258050B2 true JPS6258050B2 (enExample) 1987-12-03

Family

ID=14330506

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10255682A Granted JPS58220253A (ja) 1982-06-15 1982-06-15 光学ヘツド

Country Status (1)

Country Link
JP (1) JPS58220253A (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100246212B1 (ko) * 1991-05-31 2000-03-15 이데이 노부유끼 광 디스크장치

Also Published As

Publication number Publication date
JPS58220253A (ja) 1983-12-21

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