JPS5319807A - Luminous flux focus controller - Google Patents

Luminous flux focus controller

Info

Publication number
JPS5319807A
JPS5319807A JP9400176A JP9400176A JPS5319807A JP S5319807 A JPS5319807 A JP S5319807A JP 9400176 A JP9400176 A JP 9400176A JP 9400176 A JP9400176 A JP 9400176A JP S5319807 A JPS5319807 A JP S5319807A
Authority
JP
Japan
Prior art keywords
luminous flux
focus controller
flux focus
square
photo detector
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
JP9400176A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5642060B2 (OSRAM
Inventor
Susumu Sawano
Yoshito Tsunoda
Takeshi Maeda
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 JP9400176A priority Critical patent/JPS5319807A/ja
Priority to NL7708200A priority patent/NL7708200A/xx
Priority to GB31616/77A priority patent/GB1590844A/en
Priority to US05/819,861 priority patent/US4163149A/en
Priority to DE2734163A priority patent/DE2734163C2/de
Priority to FR7723236A priority patent/FR2360150A1/fr
Publication of JPS5319807A publication Critical patent/JPS5319807A/ja
Publication of JPS5642060B2 publication Critical patent/JPS5642060B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Automatic Focus Adjustment (AREA)
  • Optical Recording Or Reproduction (AREA)
JP9400176A 1976-07-28 1976-08-09 Luminous flux focus controller Granted JPS5319807A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP9400176A JPS5319807A (en) 1976-08-09 1976-08-09 Luminous flux focus controller
NL7708200A NL7708200A (nl) 1976-07-28 1977-07-22 Automatische scherpstellingsinrichting.
GB31616/77A GB1590844A (en) 1976-07-28 1977-07-27 Automatic focussing apparatus
US05/819,861 US4163149A (en) 1976-07-28 1977-07-28 Automatic focusing apparatus
DE2734163A DE2734163C2 (de) 1976-07-28 1977-07-28 Automatische Fokussiereinrichtung
FR7723236A FR2360150A1 (fr) 1976-07-28 1977-07-28 Appareil de mise au point automatique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9400176A JPS5319807A (en) 1976-08-09 1976-08-09 Luminous flux focus controller

Publications (2)

Publication Number Publication Date
JPS5319807A true JPS5319807A (en) 1978-02-23
JPS5642060B2 JPS5642060B2 (OSRAM) 1981-10-02

Family

ID=14098163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9400176A Granted JPS5319807A (en) 1976-07-28 1976-08-09 Luminous flux focus controller

Country Status (1)

Country Link
JP (1) JPS5319807A (OSRAM)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55947A (en) * 1978-06-19 1980-01-07 Pioneer Video Corp Servo unit of optical information reader
US4410969A (en) * 1979-12-19 1983-10-18 Hitachi, Ltd. Optical information playback apparatus
JPH0516859U (ja) * 1991-08-26 1993-03-02 株式会社イナツクス スイツチ機構付水栓
US7839733B2 (en) 2005-03-08 2010-11-23 Mitsubishi Electric Corporation Optical device and optical disc apparatus utilizing the optical device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55947A (en) * 1978-06-19 1980-01-07 Pioneer Video Corp Servo unit of optical information reader
US4410969A (en) * 1979-12-19 1983-10-18 Hitachi, Ltd. Optical information playback apparatus
JPH0516859U (ja) * 1991-08-26 1993-03-02 株式会社イナツクス スイツチ機構付水栓
US7839733B2 (en) 2005-03-08 2010-11-23 Mitsubishi Electric Corporation Optical device and optical disc apparatus utilizing the optical device

Also Published As

Publication number Publication date
JPS5642060B2 (OSRAM) 1981-10-02

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