JPS54104803A - Focus detector in optical recorder-reproducer - Google Patents

Focus detector in optical recorder-reproducer

Info

Publication number
JPS54104803A
JPS54104803A JP1180478A JP1180478A JPS54104803A JP S54104803 A JPS54104803 A JP S54104803A JP 1180478 A JP1180478 A JP 1180478A JP 1180478 A JP1180478 A JP 1180478A JP S54104803 A JPS54104803 A JP S54104803A
Authority
JP
Japan
Prior art keywords
aperture lens
disc
recording
reproducer
axis direction
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
JP1180478A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6217287B2 (enrdf_load_stackoverflow
Inventor
Shunji Harikae
Tomio Yoshida
Akifumi Nakada
Toshio Sato
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 JP1180478A priority Critical patent/JPS54104803A/ja
Publication of JPS54104803A publication Critical patent/JPS54104803A/ja
Publication of JPS6217287B2 publication Critical patent/JPS6217287B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Moving Of The Head For Recording And Reproducing By Optical Means (AREA)
  • Optical Recording Or Reproduction (AREA)
JP1180478A 1978-02-03 1978-02-03 Focus detector in optical recorder-reproducer Granted JPS54104803A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1180478A JPS54104803A (en) 1978-02-03 1978-02-03 Focus detector in optical recorder-reproducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1180478A JPS54104803A (en) 1978-02-03 1978-02-03 Focus detector in optical recorder-reproducer

Publications (2)

Publication Number Publication Date
JPS54104803A true JPS54104803A (en) 1979-08-17
JPS6217287B2 JPS6217287B2 (enrdf_load_stackoverflow) 1987-04-16

Family

ID=11788031

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1180478A Granted JPS54104803A (en) 1978-02-03 1978-02-03 Focus detector in optical recorder-reproducer

Country Status (1)

Country Link
JP (1) JPS54104803A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883338A (ja) * 1981-11-10 1983-05-19 Teac Co 光学的情報記録装置における記録用光ビームの最適フオーカス状態を得るための方法
JPS59127238A (ja) * 1982-12-30 1984-07-23 Sony Corp 光学式情報記録装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883338A (ja) * 1981-11-10 1983-05-19 Teac Co 光学的情報記録装置における記録用光ビームの最適フオーカス状態を得るための方法
JPS5883339A (ja) * 1981-11-10 1983-05-19 Teac Co 光学的情報記録再生装置において最適フォ−カス状態を得る方法
JPS59127238A (ja) * 1982-12-30 1984-07-23 Sony Corp 光学式情報記録装置

Also Published As

Publication number Publication date
JPS6217287B2 (enrdf_load_stackoverflow) 1987-04-16

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