JPS5515128A - Aperture device of camera - Google Patents
Aperture device of cameraInfo
- Publication number
- JPS5515128A JPS5515128A JP8732678A JP8732678A JPS5515128A JP S5515128 A JPS5515128 A JP S5515128A JP 8732678 A JP8732678 A JP 8732678A JP 8732678 A JP8732678 A JP 8732678A JP S5515128 A JPS5515128 A JP S5515128A
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- gear
- driving
- cam
- moving
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 abstract 3
- 230000007547 defect Effects 0.000 abstract 1
Landscapes
- Exposure Control For Cameras (AREA)
- Cameras In General (AREA)
- Diaphragms For Cameras (AREA)
Abstract
PURPOSE: To set correct aperture with high accuracy without causing aperture setting defects, etc. owing to the speed change of an aperture-driving member by rotating a cam by the driving force of an aperture-moving spring body and driving the aperture-moving member by the cam.
CONSTITUTION: When a lock lever 57 is turned to left by moving an operating member 61 rightward in a charged state, a driving lever 21 is released of detention and is rotated by the rotating torque of a spring body 22. This rotating causes a series of gear mechanisms such as gears 25, 26, etc. to be rotated at a constant speed by a speed governing mechanism 41. The cam 31 integral with the gear 25 also rotates to move an aperture-moving member 33 upward, thereby stopping down the aperture. When the preset aperture is reached, and electromagnet 44 is deenergized and a stop lever 43 is instantaneously turned right by the energy of the spring. Then, a pawl 46 engages to the large-diameter gear 27a of a gear 27 to stop a series of the gear mechanisms. As a result, the aperture-moving member 33 also stops in the corresponding position and sets the aperture at the preset value. Next, the Shutter is released to perform photographing.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8732678A JPS5515128A (en) | 1978-07-18 | 1978-07-18 | Aperture device of camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8732678A JPS5515128A (en) | 1978-07-18 | 1978-07-18 | Aperture device of camera |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5515128A true JPS5515128A (en) | 1980-02-02 |
| JPS617616B2 JPS617616B2 (en) | 1986-03-07 |
Family
ID=13911731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8732678A Granted JPS5515128A (en) | 1978-07-18 | 1978-07-18 | Aperture device of camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5515128A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751928U (en) * | 1980-09-08 | 1982-03-25 | ||
| JPS59171306A (en) * | 1983-03-18 | 1984-09-27 | Agency Of Ind Science & Technol | Variable delay line |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129223A (en) * | 1974-04-02 | 1975-10-13 | ||
| JPS5111437A (en) * | 1974-07-19 | 1976-01-29 | Minolta Camera Kk |
-
1978
- 1978-07-18 JP JP8732678A patent/JPS5515128A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50129223A (en) * | 1974-04-02 | 1975-10-13 | ||
| JPS5111437A (en) * | 1974-07-19 | 1976-01-29 | Minolta Camera Kk |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5751928U (en) * | 1980-09-08 | 1982-03-25 | ||
| JPS59171306A (en) * | 1983-03-18 | 1984-09-27 | Agency Of Ind Science & Technol | Variable delay line |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS617616B2 (en) | 1986-03-07 |
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