JPS5626212A - Distance measuring device - Google Patents
Distance measuring deviceInfo
- 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
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
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)
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 |
-
1980
- 1980-07-29 JP JP10474280A patent/JPS5626212A/en active Granted
Cited By (1)
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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