JPS5636185A - Optical information reader - Google Patents

Optical information reader

Info

Publication number
JPS5636185A
JPS5636185A JP11216679A JP11216679A JPS5636185A JP S5636185 A JPS5636185 A JP S5636185A JP 11216679 A JP11216679 A JP 11216679A JP 11216679 A JP11216679 A JP 11216679A JP S5636185 A JPS5636185 A JP S5636185A
Authority
JP
Japan
Prior art keywords
change
polarization angle
information
recorded
laser light
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
JP11216679A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6231411B2 (enrdf_load_stackoverflow
Inventor
Noriaki Tsukada
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 JP11216679A priority Critical patent/JPS5636185A/ja
Publication of JPS5636185A publication Critical patent/JPS5636185A/ja
Publication of JPS6231411B2 publication Critical patent/JPS6231411B2/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

Landscapes

  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
JP11216679A 1979-08-31 1979-08-31 Optical information reader Granted JPS5636185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11216679A JPS5636185A (en) 1979-08-31 1979-08-31 Optical information reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11216679A JPS5636185A (en) 1979-08-31 1979-08-31 Optical information reader

Publications (2)

Publication Number Publication Date
JPS5636185A true JPS5636185A (en) 1981-04-09
JPS6231411B2 JPS6231411B2 (enrdf_load_stackoverflow) 1987-07-08

Family

ID=14579888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11216679A Granted JPS5636185A (en) 1979-08-31 1979-08-31 Optical information reader

Country Status (1)

Country Link
JP (1) JPS5636185A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323373A (en) * 1991-07-11 1994-06-21 Sony Corporation Optical pickup device
EP0724258A3 (en) * 1995-01-26 1997-01-08 Hamamatsu Photonics Kk Optical feedback photodetector device
KR100571843B1 (ko) 2004-10-07 2006-04-17 삼성전기주식회사 레이저 다이오드 및 그 제조방법

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5323373A (en) * 1991-07-11 1994-06-21 Sony Corporation Optical pickup device
EP0724258A3 (en) * 1995-01-26 1997-01-08 Hamamatsu Photonics Kk Optical feedback photodetector device
KR100571843B1 (ko) 2004-10-07 2006-04-17 삼성전기주식회사 레이저 다이오드 및 그 제조방법

Also Published As

Publication number Publication date
JPS6231411B2 (enrdf_load_stackoverflow) 1987-07-08

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