JPS5540438A - Camera having automatic focus adjusting device - Google Patents
Camera having automatic focus adjusting deviceInfo
- Publication number
- JPS5540438A JPS5540438A JP11304878A JP11304878A JPS5540438A JP S5540438 A JPS5540438 A JP S5540438A JP 11304878 A JP11304878 A JP 11304878A JP 11304878 A JP11304878 A JP 11304878A JP S5540438 A JPS5540438 A JP S5540438A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- shutter
- output
- timer
- adjusting device
- 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 prevent waste of film by prohibiting shutter release while in-focus signal is not given, by releasing the shutter with the AND output of range measuring signal and timer signal.
CONSTITUTION: An in-focus signal according to the output of a phtometric element 23 of a range measuring circuit A is inputted into an AND gate D255. A timer circuit composed of capacitor 52 starts to operate. The delay time of the timer circuit is a duration sufficient to allow the mechanism of the range finder to be stabilized. When the output of the AND gate 55 becomes high level, a transistor 57 becomes ON, and a charge collected in a capacitor 59 flows into a magnet Mg1 to unlock the detent level, so that the shutter is released. Since the shutter is released by the range measuring completion signal from the automatic focus adjusting device and the timer signal, failure in focal adjustment may be prevented.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11304878A JPS5540438A (en) | 1978-09-14 | 1978-09-14 | Camera having automatic focus adjusting device |
US06/074,313 US4350418A (en) | 1978-09-14 | 1979-09-11 | Camera provided with automatic focus adjusting device |
DE2937288A DE2937288C2 (en) | 1978-09-14 | 1979-09-14 | Camera with an automatic focusing device for a lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11304878A JPS5540438A (en) | 1978-09-14 | 1978-09-14 | Camera having automatic focus adjusting device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5540438A true JPS5540438A (en) | 1980-03-21 |
Family
ID=14602163
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11304878A Pending JPS5540438A (en) | 1978-09-14 | 1978-09-14 | Camera having automatic focus adjusting device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5540438A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4456360A (en) * | 1980-07-03 | 1984-06-26 | Canon Kabushiki Kaisha | Camera |
-
1978
- 1978-09-14 JP JP11304878A patent/JPS5540438A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4456360A (en) * | 1980-07-03 | 1984-06-26 | Canon Kabushiki Kaisha | Camera |
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