JPH0447379B2 - - Google Patents

Info

Publication number
JPH0447379B2
JPH0447379B2 JP57014765A JP1476582A JPH0447379B2 JP H0447379 B2 JPH0447379 B2 JP H0447379B2 JP 57014765 A JP57014765 A JP 57014765A JP 1476582 A JP1476582 A JP 1476582A JP H0447379 B2 JPH0447379 B2 JP H0447379B2
Authority
JP
Japan
Prior art keywords
light emitting
emitting element
optical pickup
semiconductor laser
light
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
JP57014765A
Other languages
English (en)
Japanese (ja)
Other versions
JPS58133643A (ja
Inventor
Shizuo Inaba
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 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 Electronic Corp filed Critical Pioneer Electronic 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 JPS58133643A (ja) 1983-08-09
JPH0447379B2 true JPH0447379B2 (en]) 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 (en])

Families Citing this family (3)

* 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
JPH0728587Y2 (ja) * 1984-03-02 1995-06-28 オリンパス光学工業株式会社 光学式ピツクアツプ装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5522867B2 (en]) * 1973-08-16 1980-06-19
JPS5616894B2 (en]) * 1973-09-27 1981-04-18

Also Published As

Publication number Publication date
JPS58133644A (ja) 1983-08-09
JPS58133643A (ja) 1983-08-09

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