GB1244283A - Camera reflex mirror mechanism - Google Patents
Camera reflex mirror mechanismInfo
- Publication number
- GB1244283A GB1244283A GB1269869A GB1269869A GB1244283A GB 1244283 A GB1244283 A GB 1244283A GB 1269869 A GB1269869 A GB 1269869A GB 1269869 A GB1269869 A GB 1269869A GB 1244283 A GB1244283 A GB 1244283A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lever
- mirror
- spring
- gearing
- spindle
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B19/00—Cameras
- G03B19/02—Still-picture cameras
- G03B19/12—Reflex cameras with single objective and a movable reflector or a partly-transmitting mirror
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cameras In General (AREA)
Abstract
1,244,283. Reflex cameras. KOMBINAT PENTACON DRESDEN, KAMERA-UND KINOWERKE. VEB. March 11, 1969, No. 12698/69. Heading G2A. A reflex camera has a mirror-returning gearing in which a spring 7 pivots a mirror into a picture taking position, is cocked by the film winding gearing and, during the pivoting movement, cocks a spring 23 acting directly on the mirror or mirror carrier for the return of the mirror into a viewing position, two mutually coupled levers being provided, one 4 to guide the mirror into the picture taking position, the other 3 to liberate the mirror return at the end of the exposure duration. The position shown corresponds to a picture viewing position, after operation of the film-winding gearing. After operation of the camera release, blocking lever 17 is actuated in the direction of the arrow to disengage itself from the nose 16 of the lever 4 which is thus free to pivot clockwise about spindle 2 under the action of spring 7. In so doing a nose 15 engages lever 21 of the mirror guiding gearing 22 to pivot the mirror into a picture taking position and also to stress torsion spring 23. Lever 4 comes to rest with its nose 16 against lever 3. At the end of the exposure, blocking lever 12 is actuated in the direction of the arrow by means of a shutter part. Lever 3 and the entrained lever 4 are thus free to rotate in an anti-clockwise direction under the action of spring 9. Movement of lever 3 back to its initial blocked position frees lever 21 so that the mirror is returned to its picture viewing position under action of spring 23. Rotation of lever 3 in the direction of the arrow by the film wind gearing restores the mechanism to the position shown. The mutually coupled levers 3, 4 preferably pivot about the mirror spindle 2. Movement of lever 4 allows lever 24 to move which actuates the lens diaphragm. In a second embodiment, Fig. 2 (not shown), the lever (29) guiding the mirror into the taking position pivots about the mirror spindle (28), whilst the lever 31 liberating the mirror to return to the viewing position pivots about a spindle (30) carried on lever (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1269869A GB1244283A (en) | 1969-03-11 | 1969-03-11 | Camera reflex mirror mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1269869A GB1244283A (en) | 1969-03-11 | 1969-03-11 | Camera reflex mirror mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1244283A true GB1244283A (en) | 1971-08-25 |
Family
ID=10009466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1269869A Expired GB1244283A (en) | 1969-03-11 | 1969-03-11 | Camera reflex mirror mechanism |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1244283A (en) |
-
1969
- 1969-03-11 GB GB1269869A patent/GB1244283A/en not_active Expired
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