JPS57161815A - Adjustment device up to short distance of zoom type interchangeable lens - Google Patents
Adjustment device up to short distance of zoom type interchangeable lensInfo
- Publication number
- JPS57161815A JPS57161815A JP4621481A JP4621481A JPS57161815A JP S57161815 A JPS57161815 A JP S57161815A JP 4621481 A JP4621481 A JP 4621481A JP 4621481 A JP4621481 A JP 4621481A JP S57161815 A JPS57161815 A JP S57161815A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- switching operation
- adjustment device
- short distance
- interchangeable lens
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
- G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
- G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
- G02B7/105—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens with movable lens means specially adapted for focusing at close distances
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Focusing (AREA)
- Lens Barrels (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE:To prevent every mechanism from rotating unnecessarily during switching operation by allowing a transmission mechanism in a motor driving mechanism for a camera to has play during the switching operation in the direction of rotation. CONSTITUTION:When a motor 1 turns in a directionIwhile a clutch gear 8 engages with a gear 9, a ratchet gear 13 presses and rotates a ratchet pawl 16 to swievel levers 18 and 19 counterclockwise, so a clutch lever 11 is swieveled clockwise to engage the clutch gear 8 with a gear 24. Simultaneously, a pin 7 provided to a gear 4 fitted coaxially to a gear 5 only slides in a groove 6, so that succeeding gears including the gear 5 will not rotate. Therefore, since output-side gears 9 and 24 are still during switching operation, decisions on an aperture and focusing is never changed in transition to next operation after said decisions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4621481A JPS57161815A (en) | 1981-03-31 | 1981-03-31 | Adjustment device up to short distance of zoom type interchangeable lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4621481A JPS57161815A (en) | 1981-03-31 | 1981-03-31 | Adjustment device up to short distance of zoom type interchangeable lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57161815A true JPS57161815A (en) | 1982-10-05 |
| JPS6135531B2 JPS6135531B2 (en) | 1986-08-13 |
Family
ID=12740843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4621481A Granted JPS57161815A (en) | 1981-03-31 | 1981-03-31 | Adjustment device up to short distance of zoom type interchangeable lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57161815A (en) |
-
1981
- 1981-03-31 JP JP4621481A patent/JPS57161815A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6135531B2 (en) | 1986-08-13 |
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