JPS5553776A - Optical information reading method - Google Patents

Optical information reading method

Info

Publication number
JPS5553776A
JPS5553776A JP12655378A JP12655378A JPS5553776A JP S5553776 A JPS5553776 A JP S5553776A JP 12655378 A JP12655378 A JP 12655378A JP 12655378 A JP12655378 A JP 12655378A JP S5553776 A JPS5553776 A JP S5553776A
Authority
JP
Japan
Prior art keywords
laser
disk
intensity change
semiconductor
radiated
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
JP12655378A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6136298B2 (enrdf_load_stackoverflow
Inventor
Masahiko Fujiwara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12655378A priority Critical patent/JPS5553776A/ja
Publication of JPS5553776A publication Critical patent/JPS5553776A/ja
Publication of JPS6136298B2 publication Critical patent/JPS6136298B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Head (AREA)
  • Semiconductor Lasers (AREA)
  • Optical Recording Or Reproduction (AREA)
JP12655378A 1978-10-13 1978-10-13 Optical information reading method Granted JPS5553776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12655378A JPS5553776A (en) 1978-10-13 1978-10-13 Optical information reading method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12655378A JPS5553776A (en) 1978-10-13 1978-10-13 Optical information reading method

Publications (2)

Publication Number Publication Date
JPS5553776A true JPS5553776A (en) 1980-04-19
JPS6136298B2 JPS6136298B2 (enrdf_load_stackoverflow) 1986-08-18

Family

ID=14938010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12655378A Granted JPS5553776A (en) 1978-10-13 1978-10-13 Optical information reading method

Country Status (1)

Country Link
JP (1) JPS5553776A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792438A (en) * 1980-11-28 1982-06-09 Ricoh Co Ltd Recording method by laser beam
JPS60147670A (ja) * 1984-01-06 1985-08-03 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション 近接センサ
JPS60256079A (ja) * 1984-06-01 1985-12-17 Sharp Corp 半導体レ−ザを用いた微小変位測定装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5792438A (en) * 1980-11-28 1982-06-09 Ricoh Co Ltd Recording method by laser beam
JPS60147670A (ja) * 1984-01-06 1985-08-03 インタ−ナショナル　ビジネス　マシ−ンズ　コ−ポレ−ション 近接センサ
JPS60256079A (ja) * 1984-06-01 1985-12-17 Sharp Corp 半導体レ−ザを用いた微小変位測定装置

Also Published As

Publication number Publication date
JPS6136298B2 (enrdf_load_stackoverflow) 1986-08-18

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