JPS58133643A - 光学式ディスクプレ−ヤ - Google Patents

光学式ディスクプレ−ヤ

Info

Publication number
JPS58133643A
JPS58133643A JP57014765A JP1476582A JPS58133643A JP S58133643 A JPS58133643 A JP S58133643A JP 57014765 A JP57014765 A JP 57014765A JP 1476582 A JP1476582 A JP 1476582A JP S58133643 A JPS58133643 A JP S58133643A
Authority
JP
Japan
Prior art keywords
light emitting
optical pickup
emitting element
semiconductor laser
current
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
JP57014765A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0447379B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
Shizuo Inaba
静雄 稲葉
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.)
Pioneer Corp
Original Assignee
Pioneer Corp
Pioneer Electronic 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 Pioneer Corp, Pioneer Electronic Corp filed Critical Pioneer Corp
Priority to JP57014765A priority Critical patent/JPS58133643A/ja
Priority to JP57014766A priority patent/JPS58133644A/ja
Publication of JPS58133643A publication Critical patent/JPS58133643A/ja
Publication of JPH0447379B2 publication Critical patent/JPH0447379B2/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
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/125—Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces
    • G11B7/126—Circuits, methods or arrangements for laser control or stabilisation

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
JP57014765A 1982-02-03 1982-02-03 光学式ディスクプレ−ヤ Granted JPS58133643A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP57014765A JPS58133643A (ja) 1982-02-03 1982-02-03 光学式ディスクプレ−ヤ
JP57014766A JPS58133644A (ja) 1982-02-03 1982-02-03 光学式デイスクプレ−ヤ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57014765A JPS58133643A (ja) 1982-02-03 1982-02-03 光学式ディスクプレ−ヤ
JP57014766A JPS58133644A (ja) 1982-02-03 1982-02-03 光学式デイスクプレ−ヤ

Publications (2)

Publication Number Publication Date
JPS58133643A true JPS58133643A (ja) 1983-08-09
JPH0447379B2 JPH0447379B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-03

Family

ID=26350776

Family Applications (2)

Application Number Title Priority Date Filing Date
JP57014765A Granted JPS58133643A (ja) 1982-02-03 1982-02-03 光学式ディスクプレ−ヤ
JP57014766A Pending JPS58133644A (ja) 1982-02-03 1982-02-03 光学式デイスクプレ−ヤ

Family Applications After (1)

Application Number Title Priority Date Filing Date
JP57014766A Pending JPS58133644A (ja) 1982-02-03 1982-02-03 光学式デイスクプレ−ヤ

Country Status (1)

Country Link
JP (2) JPS58133643A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60142832U (ja) * 1984-03-02 1985-09-21 オリンパス光学工業株式会社 光学式ピツクアツプ装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6050637A (ja) * 1983-08-29 1985-03-20 Hitachi Ltd 光ディスク装置
JPS60123725U (ja) * 1984-01-26 1985-08-21 三洋電機株式会社 光学的録音再生装置に於ける半導体レ−ザ制御装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522867B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-08-16 1980-06-19
JPS5616894B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-09-27 1981-04-18

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60142832U (ja) * 1984-03-02 1985-09-21 オリンパス光学工業株式会社 光学式ピツクアツプ装置

Also Published As

Publication number Publication date
JPH0447379B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1992-08-03
JPS58133644A (ja) 1983-08-09

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