JPS5626212A - Distance measuring device - Google Patents

Distance measuring device

Info

Publication number
JPS5626212A
JPS5626212A JP10474280A JP10474280A JPS5626212A JP S5626212 A JPS5626212 A JP S5626212A JP 10474280 A JP10474280 A JP 10474280A JP 10474280 A JP10474280 A JP 10474280A JP S5626212 A JPS5626212 A JP S5626212A
Authority
JP
Japan
Prior art keywords
signal
zone position
light receiving
deciding means
position corresponding
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
JP10474280A
Other languages
Japanese (ja)
Other versions
JPS6315525B2 (en
Inventor
Motonobu Matsuda
Yoshihiro Tanaka
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.)
Minolta Co Ltd
Original Assignee
Minolta 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
Priority claimed from US06/065,747 external-priority patent/US4303335A/en
Application filed by Minolta Co Ltd filed Critical Minolta Co Ltd
Publication of JPS5626212A publication Critical patent/JPS5626212A/en
Publication of JPS6315525B2 publication Critical patent/JPS6315525B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Measurement Of Optical Distance (AREA)
  • Focusing (AREA)
  • Automatic Focus Adjustment (AREA)

Abstract

PURPOSE: To avoid the out-of-focus photographing by incorporating the logic circuits which gives an exact processing to the signal supplied from the photometry circuit for measurement of distance.
CONSTITUTION: The signal showing the normal zone position corresponding to the photodetector, the intermediate zone position or the normal zone position corresponding to the center photodetector is produced by the light receiving signals of photodetectors 1aW1d corresponding to 1W3 units of photometry circuits 2aW2d. This generation of signal is carried out by the 1stW3rd deciding means. Furthermore, in case no light receiving signal is delivered from any one of the photometry circuits, the 4th deciding means is provided to generate the signal which shows the indefinite zone position, along with installation of logic circuits AN2, OR0 and OR2 which function as the 5th deciding means to generate the signal showing the zone position corresponding to the constant focus of the photographing lens in case the undecidable light receiving signal is delivered.
COPYRIGHT: (C)1981,JPO&Japio
JP10474280A 1979-08-10 1980-07-29 Distance measuring device Granted JPS5626212A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/065,747 US4303335A (en) 1978-08-21 1979-08-10 Automatic distance measuring device

Publications (2)

Publication Number Publication Date
JPS5626212A true JPS5626212A (en) 1981-03-13
JPS6315525B2 JPS6315525B2 (en) 1988-04-05

Family

ID=22064834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10474280A Granted JPS5626212A (en) 1979-08-10 1980-07-29 Distance measuring device

Country Status (1)

Country Link
JP (1) JPS5626212A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964818A (en) * 1982-10-05 1984-04-12 Konishiroku Photo Ind Co Ltd Auto-focus discriminating circuit of camera or the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5964818A (en) * 1982-10-05 1984-04-12 Konishiroku Photo Ind Co Ltd Auto-focus discriminating circuit of camera or the like

Also Published As

Publication number Publication date
JPS6315525B2 (en) 1988-04-05

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