JPS55127526A - Automatic focus control system - Google Patents

Automatic focus control system

Info

Publication number
JPS55127526A
JPS55127526A JP3511879A JP3511879A JPS55127526A JP S55127526 A JPS55127526 A JP S55127526A JP 3511879 A JP3511879 A JP 3511879A JP 3511879 A JP3511879 A JP 3511879A JP S55127526 A JPS55127526 A JP S55127526A
Authority
JP
Japan
Prior art keywords
cpu
memory
subject
drive motor
user
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
JP3511879A
Other languages
Japanese (ja)
Inventor
Mitsuo Eguchi
Masahito Yoshida
Yoshiji Kato
Nobuyuki Ichino
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.)
Mamiya Camera Co Ltd
Original Assignee
Mamiya Camera 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 Mamiya Camera Co Ltd filed Critical Mamiya Camera Co Ltd
Priority to JP3511879A priority Critical patent/JPS55127526A/en
Publication of JPS55127526A publication Critical patent/JPS55127526A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To improve the speed and accuracy of focusing by the user's prior setting of the subject position to near the intended position.
CONSTITUTION: A CPU 5 is connected to the photo detector array 2 placed in the position conjugate with the film plane by way of a converter 4 and a memory 6, display device 7 and lens drive motor 10 are connected to the CPU 5. The user then beforehand sets the subject position to near the intended position and controls the focal point to the extent of permitting discrimination from background, etc. This is stored in the memory 6. Then, when the subject light passes through a photographing lens 1 and enters the photo detector array 2, the CPU 5 takes in the image data having been digitized, compares the same with the storage data of the memory 6 and drives a drive motor 10 according to the deviation thereof.
COPYRIGHT: (C)1980,JPO&Japio
JP3511879A 1979-03-27 1979-03-27 Automatic focus control system Pending JPS55127526A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3511879A JPS55127526A (en) 1979-03-27 1979-03-27 Automatic focus control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3511879A JPS55127526A (en) 1979-03-27 1979-03-27 Automatic focus control system

Publications (1)

Publication Number Publication Date
JPS55127526A true JPS55127526A (en) 1980-10-02

Family

ID=12433006

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3511879A Pending JPS55127526A (en) 1979-03-27 1979-03-27 Automatic focus control system

Country Status (1)

Country Link
JP (1) JPS55127526A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922013A (en) * 1982-07-29 1984-02-04 Nippon Kogaku Kk <Nikon> Automatic focusing device
JPH02248937A (en) * 1989-03-22 1990-10-04 Nikon Corp Auto-focus camera

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922013A (en) * 1982-07-29 1984-02-04 Nippon Kogaku Kk <Nikon> Automatic focusing device
JPH0466008B2 (en) * 1982-07-29 1992-10-21 Nippon Kogaku Kk
JPH02248937A (en) * 1989-03-22 1990-10-04 Nikon Corp Auto-focus camera

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