JPS55120023A - Movable mirror opening and closing device of single lens reflex camera - Google Patents
Movable mirror opening and closing device of single lens reflex cameraInfo
- Publication number
- JPS55120023A JPS55120023A JP2700579A JP2700579A JPS55120023A JP S55120023 A JPS55120023 A JP S55120023A JP 2700579 A JP2700579 A JP 2700579A JP 2700579 A JP2700579 A JP 2700579A JP S55120023 A JPS55120023 A JP S55120023A
- Authority
- JP
- Japan
- Prior art keywords
- movable mirror
- electromagnetic switch
- stopper
- charge
- release
- 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
- Cameras In General (AREA)
Abstract
PURPOSE: To save power consumption and miniaturize an electromagnetic swtich, by performing opening and resetting operation of movable mirror by intermittent repetitive operations of one electromagnetic switch when taking photograph, and eliminating continuous operation of the electromagnetic switch when opening it.
CONSTITUTION: When an electromagnetic switch 11 is closed by operation of a release button, an operating element 11' moves to the right, and a release stopper 8 is disengaged from a mirror control piece 4, so that the mirror control piece 4 and movable mirror 2 are rotated in the direction of arrow by means of a spring 6 to open the optical axis and to reset the release stopper 8 into the original state. When the shutter is closed after taking photograph, the electromagnetic switch 11 operates again, and the release stopper 8 moves. In consequence, a brake lever 10 and a charge stopper 9 being engaged therewith are rotated in the direction of arrow by a spring 15 to disengage the charge piece 5, so that the movable mirror 2 closes the optical axis. Then, when a film winding-up motor 22 is driven, the charge cam operates to return all the operating members into the original state.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2700579A JPS55120023A (en) | 1979-03-07 | 1979-03-07 | Movable mirror opening and closing device of single lens reflex camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2700579A JPS55120023A (en) | 1979-03-07 | 1979-03-07 | Movable mirror opening and closing device of single lens reflex camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55120023A true JPS55120023A (en) | 1980-09-16 |
Family
ID=12208998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2700579A Pending JPS55120023A (en) | 1979-03-07 | 1979-03-07 | Movable mirror opening and closing device of single lens reflex camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55120023A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005331698A (en) * | 2004-05-20 | 2005-12-02 | Sigma Corp | Mirror quick return mechanism for single-lens reflex camera |
CN102109743A (en) * | 2009-12-25 | 2011-06-29 | Hoya株式会社 | Reflector drive apparatus incorporating brake mechanism of slr camera |
-
1979
- 1979-03-07 JP JP2700579A patent/JPS55120023A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005331698A (en) * | 2004-05-20 | 2005-12-02 | Sigma Corp | Mirror quick return mechanism for single-lens reflex camera |
CN102109743A (en) * | 2009-12-25 | 2011-06-29 | Hoya株式会社 | Reflector drive apparatus incorporating brake mechanism of slr camera |
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