JPS5320303A - Luminous flux focus controller - Google Patents

Luminous flux focus controller

Info

Publication number
JPS5320303A
JPS5320303A JP9467576A JP9467576A JPS5320303A JP S5320303 A JPS5320303 A JP S5320303A JP 9467576 A JP9467576 A JP 9467576A JP 9467576 A JP9467576 A JP 9467576A JP S5320303 A JPS5320303 A JP S5320303A
Authority
JP
Japan
Prior art keywords
luminous flux
focus controller
flux focus
controller
compensating
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
JP9467576A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5627931B2 (enExample
Inventor
Susumu Sawano
Moriji Izumida
Toshimitsu Miyauchi
Kimio Tateno
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 JP9467576A priority Critical patent/JPS5320303A/ja
Publication of JPS5320303A publication Critical patent/JPS5320303A/ja
Publication of JPS5627931B2 publication Critical patent/JPS5627931B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Optical Recording Or Reproduction (AREA)
  • Automatic Focus Adjustment (AREA)
JP9467576A 1976-08-09 1976-08-09 Luminous flux focus controller Granted JPS5320303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9467576A JPS5320303A (en) 1976-08-09 1976-08-09 Luminous flux focus controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9467576A JPS5320303A (en) 1976-08-09 1976-08-09 Luminous flux focus controller

Publications (2)

Publication Number Publication Date
JPS5320303A true JPS5320303A (en) 1978-02-24
JPS5627931B2 JPS5627931B2 (enExample) 1981-06-27

Family

ID=14116786

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9467576A Granted JPS5320303A (en) 1976-08-09 1976-08-09 Luminous flux focus controller

Country Status (1)

Country Link
JP (1) JPS5320303A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410969A (en) * 1979-12-19 1983-10-18 Hitachi, Ltd. Optical information playback apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410969A (en) * 1979-12-19 1983-10-18 Hitachi, Ltd. Optical information playback apparatus

Also Published As

Publication number Publication date
JPS5627931B2 (enExample) 1981-06-27

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