JPS5812148A - 光学ヘッド - Google Patents

光学ヘッド

Info

Publication number
JPS5812148A
JPS5812148A JP56111191A JP11119181A JPS5812148A JP S5812148 A JPS5812148 A JP S5812148A JP 56111191 A JP56111191 A JP 56111191A JP 11119181 A JP11119181 A JP 11119181A JP S5812148 A JPS5812148 A JP S5812148A
Authority
JP
Japan
Prior art keywords
coat
medium
special
prism
optical head
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
JP56111191A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0321973B2 (enrdf_load_stackoverflow
Inventor
Akira Takahashi
明 高橋
Toshihisa Deguchi
出口　敏久
Kenji Oota
賢司 太田
Hideyoshi Yamaoka
山岡　秀嘉
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP56111191A priority Critical patent/JPS5812148A/ja
Publication of JPS5812148A publication Critical patent/JPS5812148A/ja
Publication of JPH0321973B2 publication Critical patent/JPH0321973B2/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
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10532—Heads
    • 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
    • G11B7/135—Means for guiding the beam from the source to the record carrier or from the record carrier to the detector

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Head (AREA)
  • Optical Elements Other Than Lenses (AREA)
JP56111191A 1981-07-14 1981-07-14 光学ヘッド Granted JPS5812148A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56111191A JPS5812148A (ja) 1981-07-14 1981-07-14 光学ヘッド

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56111191A JPS5812148A (ja) 1981-07-14 1981-07-14 光学ヘッド

Publications (2)

Publication Number Publication Date
JPS5812148A true JPS5812148A (ja) 1983-01-24
JPH0321973B2 JPH0321973B2 (enrdf_load_stackoverflow) 1991-03-25

Family

ID=14554800

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56111191A Granted JPS5812148A (ja) 1981-07-14 1981-07-14 光学ヘッド

Country Status (1)

Country Link
JP (1) JPS5812148A (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643366A (en) * 1985-07-10 1987-02-17 Kawasaki Jukogyo Kabushiki Kaisha Roller mill
JPS62212111A (ja) * 1986-03-14 1987-09-18 Mitsubishi Rayon Eng Co Ltd 連続加圧方法
JPS62266743A (ja) * 1986-05-14 1987-11-19 Asahi Optical Co Ltd 光デイスクの情報記録・再生装置
JPS6339310A (ja) * 1986-08-05 1988-02-19 Mitsubishi Rayon Eng Co Ltd 連続加圧装置
JPH0191998A (ja) * 1987-06-15 1989-04-11 Hymmen Gmbh Mas & Anlagenbau プレスベルト駆動される工作物に面圧を加える方法並びに装置
JPH01144234A (ja) * 1987-11-30 1989-06-06 Konica Corp 光ピックアップ
JPH0298832A (ja) * 1988-10-04 1990-04-11 Yokogawa Electric Corp 光学ヘッド

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643366A (en) * 1985-07-10 1987-02-17 Kawasaki Jukogyo Kabushiki Kaisha Roller mill
JPS62212111A (ja) * 1986-03-14 1987-09-18 Mitsubishi Rayon Eng Co Ltd 連続加圧方法
JPS62266743A (ja) * 1986-05-14 1987-11-19 Asahi Optical Co Ltd 光デイスクの情報記録・再生装置
JPS6339310A (ja) * 1986-08-05 1988-02-19 Mitsubishi Rayon Eng Co Ltd 連続加圧装置
JPH0191998A (ja) * 1987-06-15 1989-04-11 Hymmen Gmbh Mas & Anlagenbau プレスベルト駆動される工作物に面圧を加える方法並びに装置
JPH01144234A (ja) * 1987-11-30 1989-06-06 Konica Corp 光ピックアップ
JPH0298832A (ja) * 1988-10-04 1990-04-11 Yokogawa Electric Corp 光学ヘッド

Also Published As

Publication number Publication date
JPH0321973B2 (enrdf_load_stackoverflow) 1991-03-25

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