JPS56122003A - Zoom lens barrel capable of selection of operating part - Google Patents
Zoom lens barrel capable of selection of operating partInfo
- Publication number
- JPS56122003A JPS56122003A JP2586680A JP2586680A JPS56122003A JP S56122003 A JPS56122003 A JP S56122003A JP 2586680 A JP2586680 A JP 2586680A JP 2586680 A JP2586680 A JP 2586680A JP S56122003 A JPS56122003 A JP S56122003A
- Authority
- JP
- Japan
- Prior art keywords
- barrel
- cam
- lens
- index
- displayed
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Abstract
PURPOSE:To obtain a simplified zoom lens barrel, by exposing a part of the cam barrel enabling the zooming operation of the operating ring over the outer circumference surface of the lens and then displaying the figures or index lines on the exposed part of the cam barrel for the purpose of measurement. CONSTITUTION:When the operating ring 36 is moved toward the optical axis, the lens optical system I moves back and forth via the screw connections 36a and 38a of the intermediate barrel 38 plus the helicoid connections 38b and 42b. With a shift of the barrel 38 toward the optical axis, the cam barrel 37 turns round the optical axis by an engaging function between the cam groove 37a and the rectilinear groove 34a of the pin 35. As a result, an engagement is secured between the cam groove 37b and the rectilinear groove 34b of the pin 46 of the lens holder 49. Thus the lens optical system II moves to perform a zooming action. The distance figures (unit: f, t & m) are displayed at the end part 36c of the ring 36; the focal distance, the standard index 37d, and the index line of depth of field before and after the index 37d are displayed at the exposure part 37c of the cam barrel 37; plus the index line 34c and the value of iris diaphragm are displayed at the base barrel 2 and the ring 33 respectively. In such way, the barrel can be simplified for a zoom lens.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2586680A JPS6048004B2 (en) | 1980-02-29 | 1980-02-29 | Zoom lens barrel with selectable controls |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2586680A JPS6048004B2 (en) | 1980-02-29 | 1980-02-29 | Zoom lens barrel with selectable controls |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56122003A true JPS56122003A (en) | 1981-09-25 |
JPS6048004B2 JPS6048004B2 (en) | 1985-10-24 |
Family
ID=12177713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2586680A Expired JPS6048004B2 (en) | 1980-02-29 | 1980-02-29 | Zoom lens barrel with selectable controls |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6048004B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5989306U (en) * | 1982-12-06 | 1984-06-16 | 株式会社リコー | zoom lens |
JPS59214819A (en) * | 1983-05-23 | 1984-12-04 | Canon Inc | Defogging device for optical lens |
US4511221A (en) * | 1981-12-25 | 1985-04-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Reflex zoom lens having aperture scale |
JPH03210542A (en) * | 1990-01-16 | 1991-09-13 | Fuji Photo Optical Co Ltd | Zoom lens barrel |
US5381272A (en) * | 1992-01-27 | 1995-01-10 | Nikon Corporation | Lens barrel with improved drum arrangement |
-
1980
- 1980-02-29 JP JP2586680A patent/JPS6048004B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4511221A (en) * | 1981-12-25 | 1985-04-16 | Asahi Kogaku Kogyo Kabushiki Kaisha | Reflex zoom lens having aperture scale |
JPS5989306U (en) * | 1982-12-06 | 1984-06-16 | 株式会社リコー | zoom lens |
JPS59214819A (en) * | 1983-05-23 | 1984-12-04 | Canon Inc | Defogging device for optical lens |
JPH03210542A (en) * | 1990-01-16 | 1991-09-13 | Fuji Photo Optical Co Ltd | Zoom lens barrel |
US5381272A (en) * | 1992-01-27 | 1995-01-10 | Nikon Corporation | Lens barrel with improved drum arrangement |
Also Published As
Publication number | Publication date |
---|---|
JPS6048004B2 (en) | 1985-10-24 |
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