JPS5280026A - Focus detection means - Google Patents
Focus detection meansInfo
- Publication number
- JPS5280026A JPS5280026A JP15747975A JP15747975A JPS5280026A JP S5280026 A JPS5280026 A JP S5280026A JP 15747975 A JP15747975 A JP 15747975A JP 15747975 A JP15747975 A JP 15747975A JP S5280026 A JPS5280026 A JP S5280026A
- Authority
- JP
- Japan
- Prior art keywords
- detection means
- focus detection
- oscillating
- swinging
- camera
- 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
- Automatic Focus Adjustment (AREA)
- Focusing (AREA)
Abstract
PURPOSE: To enable a correct focusing on a dark object and a moving object in the focus detecting means for camera, etc. by oscillating a refractive optical element with a definite periodic time, and by detecting the swinging of an image.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15747975A JPS5280026A (en) | 1975-12-26 | 1975-12-26 | Focus detection means |
DE19762659009 DE2659009A1 (en) | 1975-12-26 | 1976-12-27 | Automatic focussing camera coping with weak light - uses secondary image periodically shifted to generate AC detection signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15747975A JPS5280026A (en) | 1975-12-26 | 1975-12-26 | Focus detection means |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5280026A true JPS5280026A (en) | 1977-07-05 |
Family
ID=15650566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15747975A Pending JPS5280026A (en) | 1975-12-26 | 1975-12-26 | Focus detection means |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5280026A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5688121A (en) * | 1979-11-30 | 1981-07-17 | Honeywell Inc | Lowwcontrasttbias automatic focusing device |
-
1975
- 1975-12-26 JP JP15747975A patent/JPS5280026A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5688121A (en) * | 1979-11-30 | 1981-07-17 | Honeywell Inc | Lowwcontrasttbias automatic focusing device |
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