JPS5297733A - Automatic focus control means - Google Patents

Automatic focus control means

Info

Publication number
JPS5297733A
JPS5297733A JP1432276A JP1432276A JPS5297733A JP S5297733 A JPS5297733 A JP S5297733A JP 1432276 A JP1432276 A JP 1432276A JP 1432276 A JP1432276 A JP 1432276A JP S5297733 A JPS5297733 A JP S5297733A
Authority
JP
Japan
Prior art keywords
control means
focus control
automatic focus
dark
quick
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.)
Pending
Application number
JP1432276A
Other languages
Japanese (ja)
Inventor
Toshihiro Kondo
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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 Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP1432276A priority Critical patent/JPS5297733A/en
Priority to DE19762659009 priority patent/DE2659009A1/en
Priority to US05/754,699 priority patent/US4090209A/en
Publication of JPS5297733A publication Critical patent/JPS5297733A/en
Pending legal-status Critical Current

Links

Landscapes

  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To perform a quick and precise focusing even in the dark by detecting the vibration of an image due to a rotating prism, and controlling the position of an objective lens.
COPYRIGHT: (C)1977,JPO&Japio
JP1432276A 1975-12-26 1976-02-12 Automatic focus control means Pending JPS5297733A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1432276A JPS5297733A (en) 1976-02-12 1976-02-12 Automatic focus control means
DE19762659009 DE2659009A1 (en) 1975-12-26 1976-12-27 Automatic focussing camera coping with weak light - uses secondary image periodically shifted to generate AC detection signal
US05/754,699 US4090209A (en) 1975-12-26 1976-12-27 Automatic image focusing system for cameras

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1432276A JPS5297733A (en) 1976-02-12 1976-02-12 Automatic focus control means

Publications (1)

Publication Number Publication Date
JPS5297733A true JPS5297733A (en) 1977-08-16

Family

ID=11857833

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1432276A Pending JPS5297733A (en) 1975-12-26 1976-02-12 Automatic focus control means

Country Status (1)

Country Link
JP (1) JPS5297733A (en)

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