JPH0210491B2 - - Google Patents

Info

Publication number
JPH0210491B2
JPH0210491B2 JP55142910A JP14291080A JPH0210491B2 JP H0210491 B2 JPH0210491 B2 JP H0210491B2 JP 55142910 A JP55142910 A JP 55142910A JP 14291080 A JP14291080 A JP 14291080A JP H0210491 B2 JPH0210491 B2 JP H0210491B2
Authority
JP
Japan
Prior art keywords
light
track
photodetector
lens
signal
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
JP55142910A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5769534A (en
Inventor
Toshimitsu Myauchi
Seiji Yonezawa
Toshio Sugyama
Masateru Watanabe
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55142910A priority Critical patent/JPS5769534A/ja
Publication of JPS5769534A publication Critical patent/JPS5769534A/ja
Publication of JPH0210491B2 publication Critical patent/JPH0210491B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Optical Head (AREA)
JP55142910A 1980-10-15 1980-10-15 Optical track tracing device Granted JPS5769534A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55142910A JPS5769534A (en) 1980-10-15 1980-10-15 Optical track tracing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55142910A JPS5769534A (en) 1980-10-15 1980-10-15 Optical track tracing device

Publications (2)

Publication Number Publication Date
JPS5769534A JPS5769534A (en) 1982-04-28
JPH0210491B2 true JPH0210491B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-03-08

Family

ID=15326452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55142910A Granted JPS5769534A (en) 1980-10-15 1980-10-15 Optical track tracing device

Country Status (1)

Country Link
JP (1) JPS5769534A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61216143A (ja) * 1985-03-20 1986-09-25 Matsushita Electric Ind Co Ltd 光学ヘツド
JP3267748B2 (ja) * 1993-06-08 2002-03-25 パイオニア株式会社 情報再生方法及び光検出器

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2197495A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1972-08-25 1974-03-22 Thomson Csf
FR2266932B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-03-02 1977-09-02 Thomson Brandt
JPS51134018A (en) * 1975-05-16 1976-11-20 Hitachi Ltd Information regeneration method
JPS5465007A (en) * 1977-11-02 1979-05-25 Matsushita Electric Ind Co Ltd Disc form recording carrier reader

Also Published As

Publication number Publication date
JPS5769534A (en) 1982-04-28

Similar Documents

Publication Publication Date Title
US4924079A (en) Apparatus for optically scanning an information plane
US3992574A (en) Opto-electronic system for determining a deviation between the actual position of a radiation-reflecting plane in an optical imaging system and the desired position of said plane
JPS6048949B2 (ja) 光ビームで情報を読み取る装置
JPS5856236A (ja) 光学的トラック位置検出装置およびそれを用いた光学的記録再生装置
US5198916A (en) Optical pickup
JPH02149933A (ja) 焦点制御装置
EP0475523B1 (en) Device for optically scanning an information plane
JPS6155047B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JPS6336045B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JPH0210491B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JPS59231736A (ja) フォーカスおよびトラッキング誤差検出装置
JP3503995B2 (ja) 光ディスク装置
JPS6331858B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP2552660B2 (ja) フオ−カス誤差検出装置
JPS5984352A (ja) 焦点誤差検出装置
JPH0323977B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP2644110B2 (ja) 光記録再生装置
JP2734685B2 (ja) 光検出器の調整方法および焦点誤差検出装置
JP2686323B2 (ja) フォーカス誤差検出装置
JPS5845629A (ja) 焦点誤差信号検出機能を備えた集光装置
JPH0743835B2 (ja) フォーカス誤差検出装置
JPH0237004B2 (ja) Kogakutekiichikenshutsusochi
JPS61227233A (ja) 光学的読取装置
JPS627610B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JPS6050638A (ja) 光信号検出装置