JPS5570825A - Aperture device of lens - Google Patents
Aperture device of lensInfo
- Publication number
- JPS5570825A JPS5570825A JP14507578A JP14507578A JPS5570825A JP S5570825 A JPS5570825 A JP S5570825A JP 14507578 A JP14507578 A JP 14507578A JP 14507578 A JP14507578 A JP 14507578A JP S5570825 A JPS5570825 A JP S5570825A
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- cam
- driving member
- blade driving
- face
- 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
Landscapes
- Diaphragms For Cameras (AREA)
Abstract
PURPOSE: To make aperture scale to an equal sapcing and reduce the turning torque of automatic aperture by disposing a cam mechansim between the aperture scale member and aperture blade driving member and eliminating the spring energizing force acting upon the blade driving member during automatic aperture control operation.
CONSTITUTION: As a drive ring 1 turns, an aperture blade 2 is moved and aperture opening is adjusted. There is an interlocking pin 3 to the ring 1 and is connected to a lever 3a. A cam face 5a is formed on the inside face of the turnable cam ring 5 and a pinch fixed to the arc-form lever 12 pivotally fitted to the lens-barrel engages to this face. The pushing element 12b at the free end of the lever 12 engages with the interlocking pin 3 and the pin 4 is pushed to the cam face 5a by a spring 13. Since the manual control of the lens aperture is accomplished by way of the cam mechanism, the aperture scale may be formed to an equal spacing and in the automatic control it is directly applied to the aperture blade driving member without going through this cam mechansim but at this time the spring energizing force to the blade driving member is eliminated and therefore the torque for rotating may be considerably reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53145075A JPS5948364B2 (en) | 1978-11-24 | 1978-11-24 | lens aperture device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53145075A JPS5948364B2 (en) | 1978-11-24 | 1978-11-24 | lens aperture device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5570825A true JPS5570825A (en) | 1980-05-28 |
| JPS5948364B2 JPS5948364B2 (en) | 1984-11-26 |
Family
ID=15376794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53145075A Expired JPS5948364B2 (en) | 1978-11-24 | 1978-11-24 | lens aperture device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948364B2 (en) |
-
1978
- 1978-11-24 JP JP53145075A patent/JPS5948364B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5948364B2 (en) | 1984-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5614225A (en) | Focusing device | |
| ES8101700A1 (en) | Actuator mechanism | |
| JPS56124167A (en) | Mechanism to position magnetic head | |
| JPS5577730A (en) | Bound preventing mechanism of focal plane shutter | |
| JPS5570825A (en) | Aperture device of lens | |
| JPS5763521A (en) | Distance adjusting and shutter controlling mechanism of camera | |
| JPS57185022A (en) | Electromagnetic driving device | |
| GB1460085A (en) | Shutter mechanism for a reflex camera | |
| JPS5767826A (en) | Positioning device | |
| JPS5591674A (en) | Printing device using cassette type printing wheel | |
| JPS57111523A (en) | Mirror mechanism of single-lens reflex camera | |
| JPS5582985A (en) | Pointer indication type electronic watch | |
| JPS54162505A (en) | Driving mechanism of tone arm | |
| JPS57141071A (en) | Starting mechanism for eject mechanism of cassette deck | |
| JPS57112727A (en) | Speed governor for camera | |
| JPS5766068A (en) | Manual operation mechanism for manual and automatic car | |
| JPS57118228A (en) | Electromagnetic driving shutter | |
| JPS5629219A (en) | Lens information lead-in device of lens interchangeable camera | |
| JPS5688123A (en) | Lens interchangeable camera | |
| JPS554005A (en) | Automatic iris device | |
| JPS54162503A (en) | Driving device of tone arm | |
| JPS56102802A (en) | Camera with automatic focus adjusting device incorporating self-timer | |
| JPS57141070A (en) | Starting mechanism for eject mechanism of cassette deck | |
| JPS57204521A (en) | Driving mechanism for diaphragm and movable reflecting mirror of single-lens reflex camera | |
| JPS54123915A (en) | Record player system |