JPS5297733A - Automatic focus control means - Google Patents
Automatic focus control meansInfo
- Publication number
- JPS5297733A JPS5297733A JP1432276A JP1432276A JPS5297733A JP S5297733 A JPS5297733 A JP S5297733A JP 1432276 A JP1432276 A JP 1432276A JP 1432276 A JP1432276 A JP 1432276A JP S5297733 A JPS5297733 A JP S5297733A
- Authority
- JP
- Japan
- Prior art keywords
- control means
- focus control
- automatic focus
- dark
- quick
- 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 perform a quick and precise focusing even in the dark by detecting the vibration of an image due to a rotating prism, and controlling the position of an objective lens.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1432276A JPS5297733A (en) | 1976-02-12 | 1976-02-12 | Automatic focus control 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 |
US05/754,699 US4090209A (en) | 1975-12-26 | 1976-12-27 | Automatic image focusing system for cameras |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1432276A JPS5297733A (en) | 1976-02-12 | 1976-02-12 | Automatic focus control means |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5297733A true JPS5297733A (en) | 1977-08-16 |
Family
ID=11857833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1432276A Pending JPS5297733A (en) | 1975-12-26 | 1976-02-12 | Automatic focus control means |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5297733A (en) |
-
1976
- 1976-02-12 JP JP1432276A patent/JPS5297733A/en active Pending
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