JPS5750329A - Optical reproducing device - Google Patents

Optical reproducing device

Info

Publication number
JPS5750329A
JPS5750329A JP12376580A JP12376580A JPS5750329A JP S5750329 A JPS5750329 A JP S5750329A JP 12376580 A JP12376580 A JP 12376580A JP 12376580 A JP12376580 A JP 12376580A JP S5750329 A JPS5750329 A JP S5750329A
Authority
JP
Japan
Prior art keywords
polarized light
polarization
circularly polarized
phase difference
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
JP12376580A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6255222B2 (de
Inventor
Seiji Nishino
Masahiro Orukawa
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12376580A priority Critical patent/JPS5750329A/ja
Publication of JPS5750329A publication Critical patent/JPS5750329A/ja
Publication of JPS6255222B2 publication Critical patent/JPS6255222B2/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

Landscapes

  • Optical Recording Or Reproduction (AREA)
JP12376580A 1980-09-05 1980-09-05 Optical reproducing device Granted JPS5750329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12376580A JPS5750329A (en) 1980-09-05 1980-09-05 Optical reproducing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12376580A JPS5750329A (en) 1980-09-05 1980-09-05 Optical reproducing device

Publications (2)

Publication Number Publication Date
JPS5750329A true JPS5750329A (en) 1982-03-24
JPS6255222B2 JPS6255222B2 (de) 1987-11-18

Family

ID=14868718

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12376580A Granted JPS5750329A (en) 1980-09-05 1980-09-05 Optical reproducing device

Country Status (1)

Country Link
JP (1) JPS5750329A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101050A (ja) * 1982-12-02 1984-06-11 Sony Corp 再生装置
WO1984002602A1 (en) * 1982-12-23 1984-07-05 Sony Corp Thermomagnetic optical recording method
JPS6035349A (ja) * 1983-08-06 1985-02-23 Brother Ind Ltd 光磁気再生装置
EP0156058A2 (de) * 1983-08-06 1985-10-02 Brother Kogyo Kabushiki Kaisha Gerät für magneto-optische Ablesung
JPS61233444A (ja) * 1985-04-09 1986-10-17 Matsushita Electric Ind Co Ltd 光学式再生装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59101050A (ja) * 1982-12-02 1984-06-11 Sony Corp 再生装置
WO1984002602A1 (en) * 1982-12-23 1984-07-05 Sony Corp Thermomagnetic optical recording method
JPS6035349A (ja) * 1983-08-06 1985-02-23 Brother Ind Ltd 光磁気再生装置
EP0156058A2 (de) * 1983-08-06 1985-10-02 Brother Kogyo Kabushiki Kaisha Gerät für magneto-optische Ablesung
US5007021A (en) * 1983-08-06 1991-04-09 Brother Kogyo Kabushiki Kaisha Magneto-optical data reading apparatus
JPS61233444A (ja) * 1985-04-09 1986-10-17 Matsushita Electric Ind Co Ltd 光学式再生装置

Also Published As

Publication number Publication date
JPS6255222B2 (de) 1987-11-18

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