JPS5659209A - Focusing detector - Google Patents

Focusing detector

Info

Publication number
JPS5659209A
JPS5659209A JP13553979A JP13553979A JPS5659209A JP S5659209 A JPS5659209 A JP S5659209A JP 13553979 A JP13553979 A JP 13553979A JP 13553979 A JP13553979 A JP 13553979A JP S5659209 A JPS5659209 A JP S5659209A
Authority
JP
Japan
Prior art keywords
signal
circuit
focusing
analog
way
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
JP13553979A
Other languages
Japanese (ja)
Inventor
Takeomi Suzuki
Kenji Fukuoka
Asao Hayashi
Kenichi Oikami
Masahiro Aoki
Masatoshi Ida
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP13553979A priority Critical patent/JPS5659209A/en
Publication of JPS5659209A publication Critical patent/JPS5659209A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To make use convenient by providing a D/A converting circuit and a sample holding circuit between the arithmetic circuit and display device of a focusing detector which projects object images to a photodetector array and digitally displaying the focusing state by way of a signal processing circuit and arithmetic circuit, and outputting an analog focusing signal.
CONSTITUTION: The image of an object 1 is projected onto the photodetector array of a photodetecting device 3 by way of an imaging optical system 2, and the illuminance signal corresponding to the intensity distribution thereof is converted to a digital illuminance signal by a signal processing circuit 4. The output signal thereof is arithmetically processed by a central processing unit 5, and the digital focusing signal is sent to a D/A converting circuit 6. The analog focusing detected signal which is the output thereof is analog-displayed in an analog display device 8 by way of a sample holding circuit 7, and the imaging system 2 is moved by operating an optical system driving unit 10 by way of an optical system driving control circuit 9, whereby focus controlling is accomplished. Since the focusing state is analog- displayed, this device is convenient for use.
COPYRIGHT: (C)1981,JPO&Japio
JP13553979A 1979-10-19 1979-10-19 Focusing detector Pending JPS5659209A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13553979A JPS5659209A (en) 1979-10-19 1979-10-19 Focusing detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13553979A JPS5659209A (en) 1979-10-19 1979-10-19 Focusing detector

Publications (1)

Publication Number Publication Date
JPS5659209A true JPS5659209A (en) 1981-05-22

Family

ID=15154139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13553979A Pending JPS5659209A (en) 1979-10-19 1979-10-19 Focusing detector

Country Status (1)

Country Link
JP (1) JPS5659209A (en)

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