JPH0810854Y2 - 光磁気記録媒体再生装置 - Google Patents

光磁気記録媒体再生装置

Info

Publication number
JPH0810854Y2
JPH0810854Y2 JP7080786U JP7080786U JPH0810854Y2 JP H0810854 Y2 JPH0810854 Y2 JP H0810854Y2 JP 7080786 U JP7080786 U JP 7080786U JP 7080786 U JP7080786 U JP 7080786U JP H0810854 Y2 JPH0810854 Y2 JP H0810854Y2
Authority
JP
Japan
Prior art keywords
light
magneto
deflection
optical
recording medium
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
JP7080786U
Other languages
English (en)
Japanese (ja)
Other versions
JPS62186228U (enrdf_load_stackoverflow
Inventor
喜洋 内海
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
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 filed Critical Pioneer Corp
Priority to JP7080786U priority Critical patent/JPH0810854Y2/ja
Priority to DE19873715443 priority patent/DE3715443C2/de
Priority to FR8706654A priority patent/FR2598521B1/fr
Publication of JPS62186228U publication Critical patent/JPS62186228U/ja
Priority to US07/438,932 priority patent/US5189651A/en
Application granted granted Critical
Publication of JPH0810854Y2 publication Critical patent/JPH0810854Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G11B11/1055—Disposition or mounting of transducers relative to record carriers
    • G11B11/10576—Disposition or mounting of transducers relative to record carriers with provision for moving the transducers for maintaining alignment or spacing relative to the carrier
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/16—Beam splitting or combining systems used as aids for focusing
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP7080786U 1986-05-12 1986-05-12 光磁気記録媒体再生装置 Expired - Lifetime JPH0810854Y2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP7080786U JPH0810854Y2 (ja) 1986-05-12 1986-05-12 光磁気記録媒体再生装置
DE19873715443 DE3715443C2 (de) 1986-05-12 1987-05-08 Wiedergabeeinrichtung zum Lesen von Signalen von einem magneto-optischen Aufzeichnungsmedium
FR8706654A FR2598521B1 (fr) 1986-05-12 1987-05-12 Systeme optique d'un dispositif d'enregistrement et de reproduction photo-electro-magnetique.
US07/438,932 US5189651A (en) 1986-05-12 1989-10-30 Optical system in magneto-optical recording and reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7080786U JPH0810854Y2 (ja) 1986-05-12 1986-05-12 光磁気記録媒体再生装置

Publications (2)

Publication Number Publication Date
JPS62186228U JPS62186228U (enrdf_load_stackoverflow) 1987-11-26
JPH0810854Y2 true JPH0810854Y2 (ja) 1996-03-29

Family

ID=13442201

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7080786U Expired - Lifetime JPH0810854Y2 (ja) 1986-05-12 1986-05-12 光磁気記録媒体再生装置

Country Status (3)

Country Link
JP (1) JPH0810854Y2 (enrdf_load_stackoverflow)
DE (1) DE3715443C2 (enrdf_load_stackoverflow)
FR (1) FR2598521B1 (enrdf_load_stackoverflow)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2624241B2 (ja) * 1986-07-31 1997-06-25 松下電器産業株式会社 光磁気デイスク装置
EP0331476A1 (en) * 1988-03-03 1989-09-06 Canon Kabushiki Kaisha Magneto-optical information reproducing apparatus having a polarizing beam splitter disposed with an inclination of 45
EP0395832B1 (en) * 1989-05-02 1995-04-12 Pioneer Electronic Corporation Optical head
DE19645110A1 (de) * 1996-11-01 1998-05-07 Thomson Brandt Gmbh Aufzeichnungs- oder Wiedergabegerät und Verfahren zum Erkennen eines Fokussierungszustands

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7907216A (nl) * 1979-09-28 1981-03-31 Philips Nv Optisch fokusfout-detektiestelsel.
JPS57147148A (en) * 1981-03-05 1982-09-10 Olympus Optical Co Ltd Information reproducer with magnetooptic system
DE3429382A1 (de) * 1983-08-10 1985-02-28 Canon K.K., Tokio/Tokyo Optischer kopf
JPS61236035A (ja) * 1985-04-09 1986-10-21 Sony Corp 光学ヘツド

Also Published As

Publication number Publication date
JPS62186228U (enrdf_load_stackoverflow) 1987-11-26
FR2598521A1 (fr) 1987-11-13
FR2598521B1 (fr) 1991-11-08
DE3715443C2 (de) 1998-02-26
DE3715443A1 (de) 1987-11-19

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