JPS55108631A - Focus detector of camera - Google Patents
Focus detector of cameraInfo
- Publication number
- JPS55108631A JPS55108631A JP1525779A JP1525779A JPS55108631A JP S55108631 A JPS55108631 A JP S55108631A JP 1525779 A JP1525779 A JP 1525779A JP 1525779 A JP1525779 A JP 1525779A JP S55108631 A JPS55108631 A JP S55108631A
- Authority
- JP
- Japan
- Prior art keywords
- sensors
- photographing lens
- rows
- self
- disposed
- 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
Links
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE: To achieve higher performance by using two rows of self-scanning type image sensors.
CONSTITUTION: Half mirros 6, 7 are disposed between a photographing lens 2 and a film surface 4 and below these is disposed the substrate 18 holding two rows of self-scanning type image sensors 3, 5 via the optical system consisting of glass blocks 13W15. As a result of this, the light incident from the photographing lens 2 is split to two and is observed in the eyes 12 through a condenser lens 9 and pentagonal prism 10. At the same time, it enters the sensors 3, 5 through a half mirror 16 and mirror 17 and by comparing the contrast outputs of the both sensors 3, 5, the front and rear defocusings and focus matching are detected. Hence, the focus matching defect owing to hand blur such as in the case of the system of moving the photographing lens 2 by using single sensor does not occur.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1525779A JPS55108631A (en) | 1979-02-13 | 1979-02-13 | Focus detector of camera |
US06/118,057 US4349254A (en) | 1979-02-13 | 1980-02-04 | Camera focus detecting device |
DE19803005044 DE3005044C2 (en) | 1979-02-13 | 1980-02-11 | Focus detection device for a camera |
FR8003066A FR2449293A1 (en) | 1979-02-13 | 1980-02-12 | DEVICE FOR DETECTING THE FOCUSING OF A CAMERA |
GB8004788A GB2047037B (en) | 1979-02-13 | 1980-02-13 | Focus detecting system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1525779A JPS55108631A (en) | 1979-02-13 | 1979-02-13 | Focus detector of camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55108631A true JPS55108631A (en) | 1980-08-21 |
Family
ID=11883795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1525779A Pending JPS55108631A (en) | 1979-02-13 | 1979-02-13 | Focus detector of camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55108631A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5859415A (en) * | 1981-10-06 | 1983-04-08 | Olympus Optical Co Ltd | Focusing detection |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4958826A (en) * | 1972-10-04 | 1974-06-07 | ||
JPS5245353A (en) * | 1975-10-08 | 1977-04-09 | Hitachi Ltd | Automatically focusing device |
-
1979
- 1979-02-13 JP JP1525779A patent/JPS55108631A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4958826A (en) * | 1972-10-04 | 1974-06-07 | ||
JPS5245353A (en) * | 1975-10-08 | 1977-04-09 | Hitachi Ltd | Automatically focusing device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5859415A (en) * | 1981-10-06 | 1983-04-08 | Olympus Optical Co Ltd | Focusing detection |
JPH0145884B2 (en) * | 1981-10-06 | 1989-10-05 | Olympus Optical Co |
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