JPS59207034A - 光学系ピツクアツプ - Google Patents

光学系ピツクアツプ

Info

Publication number
JPS59207034A
JPS59207034A JP58080613A JP8061383A JPS59207034A JP S59207034 A JPS59207034 A JP S59207034A JP 58080613 A JP58080613 A JP 58080613A JP 8061383 A JP8061383 A JP 8061383A JP S59207034 A JPS59207034 A JP S59207034A
Authority
JP
Japan
Prior art keywords
light
light receiving
returned
error signal
luminous flux
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
JP58080613A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0430090B2 (enExample
Inventor
Yutaka Oki
裕 大木
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP58080613A priority Critical patent/JPS59207034A/ja
Publication of JPS59207034A publication Critical patent/JPS59207034A/ja
Publication of JPH0430090B2 publication Critical patent/JPH0430090B2/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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP58080613A 1983-05-09 1983-05-09 光学系ピツクアツプ Granted JPS59207034A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58080613A JPS59207034A (ja) 1983-05-09 1983-05-09 光学系ピツクアツプ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58080613A JPS59207034A (ja) 1983-05-09 1983-05-09 光学系ピツクアツプ

Publications (2)

Publication Number Publication Date
JPS59207034A true JPS59207034A (ja) 1984-11-24
JPH0430090B2 JPH0430090B2 (enExample) 1992-05-20

Family

ID=13723181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58080613A Granted JPS59207034A (ja) 1983-05-09 1983-05-09 光学系ピツクアツプ

Country Status (1)

Country Link
JP (1) JPS59207034A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0221431A (ja) * 1988-07-08 1990-01-24 Fujitsu Ltd 光ヘッド信号検知方法と光検知器

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0221431A (ja) * 1988-07-08 1990-01-24 Fujitsu Ltd 光ヘッド信号検知方法と光検知器

Also Published As

Publication number Publication date
JPH0430090B2 (enExample) 1992-05-20

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