JPS6115498B2 - - Google Patents

Info

Publication number
JPS6115498B2
JPS6115498B2 JP56008394A JP839481A JPS6115498B2 JP S6115498 B2 JPS6115498 B2 JP S6115498B2 JP 56008394 A JP56008394 A JP 56008394A JP 839481 A JP839481 A JP 839481A JP S6115498 B2 JPS6115498 B2 JP S6115498B2
Authority
JP
Japan
Prior art keywords
plane mirror
light
beam splitter
optical pickup
disk
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
JP56008394A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57123538A (en
Inventor
Riichi Saeki
Yoshio Myake
Toshio Takei
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56008394A priority Critical patent/JPS57123538A/ja
Publication of JPS57123538A publication Critical patent/JPS57123538A/ja
Publication of JPS6115498B2 publication Critical patent/JPS6115498B2/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
    • G11B7/0908—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 for focusing only

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP56008394A 1981-01-22 1981-01-22 Optical pickup Granted JPS57123538A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56008394A JPS57123538A (en) 1981-01-22 1981-01-22 Optical pickup

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56008394A JPS57123538A (en) 1981-01-22 1981-01-22 Optical pickup

Publications (2)

Publication Number Publication Date
JPS57123538A JPS57123538A (en) 1982-08-02
JPS6115498B2 true JPS6115498B2 (enrdf_load_html_response) 1986-04-24

Family

ID=11691968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56008394A Granted JPS57123538A (en) 1981-01-22 1981-01-22 Optical pickup

Country Status (1)

Country Link
JP (1) JPS57123538A (enrdf_load_html_response)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59152549A (ja) * 1983-02-18 1984-08-31 Canon Inc 光学ピツクアツプ
JPH0740375B2 (ja) * 1985-11-30 1995-05-01 株式会社東芝 光学ヘツド
JPS63153732A (ja) * 1986-12-18 1988-06-27 Canon Electronics Inc 焦点検出装置
CN1135802A (zh) * 1994-07-29 1996-11-13 索尼公司 光拾波装置

Also Published As

Publication number Publication date
JPS57123538A (en) 1982-08-02

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