JPS6431111A - Automatic focusing device - Google Patents
Automatic focusing deviceInfo
- Publication number
- JPS6431111A JPS6431111A JP18714987A JP18714987A JPS6431111A JP S6431111 A JPS6431111 A JP S6431111A JP 18714987 A JP18714987 A JP 18714987A JP 18714987 A JP18714987 A JP 18714987A JP S6431111 A JPS6431111 A JP S6431111A
- Authority
- JP
- Japan
- Prior art keywords
- variable magnification
- macrophotographing
- focusing
- output signal
- control part
- 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 obtain an automatic focusing device which can focus at the time of macrophotographing by switching and connecting a control part from a focus motor side to a zoom motor side in interlocking with a switching means at the time of macrophotographing. CONSTITUTION:When a variable magnification operational member is within a rotating range for variable magnification, the control part 14 is connected to the focus motor 15 by a switching switch 18 and executes focusing by moving a focusing lens group 1 so that an output signal from a solid-state image pickup element 7 becomes a peak value. When the variable magnification operational member is out of the rotating range for variable magnification and within the rotating range for macrophotographing, the control part 14 is connected to the zoom motor 17 by the switching switch 18 and executes focusing by moving a variable magnification lens group 2 so that the output signal becomes the peak value. Thus, the variable magnification group in a photographing lens system can be moved so that the output signal from the solid-state image pickup element becomes the peak value at the time of macrophotographing and automatic focusing can be possible.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18714987A JPS6431111A (en) | 1987-07-27 | 1987-07-27 | Automatic focusing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18714987A JPS6431111A (en) | 1987-07-27 | 1987-07-27 | Automatic focusing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6431111A true JPS6431111A (en) | 1989-02-01 |
Family
ID=16200977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18714987A Pending JPS6431111A (en) | 1987-07-27 | 1987-07-27 | Automatic focusing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6431111A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7009767B2 (en) | 2000-11-10 | 2006-03-07 | Fdk Corporation | Polarization separating/synthesizing element and optical device using it |
-
1987
- 1987-07-27 JP JP18714987A patent/JPS6431111A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7009767B2 (en) | 2000-11-10 | 2006-03-07 | Fdk Corporation | Polarization separating/synthesizing element and optical device using it |
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