JPS5737306A - Lens barrel for high variable magnification zoom lens - Google Patents
Lens barrel for high variable magnification zoom lensInfo
- Publication number
- JPS5737306A JPS5737306A JP11295280A JP11295280A JPS5737306A JP S5737306 A JPS5737306 A JP S5737306A JP 11295280 A JP11295280 A JP 11295280A JP 11295280 A JP11295280 A JP 11295280A JP S5737306 A JPS5737306 A JP S5737306A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- helicoid
- barrel
- double
- zooming
- 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 simplify a zooming mechanism by driving the 1st lens group by double helicoid mechanisms for the purpose of zooming, and driving the other lens groups by means of the cams provided to a helicoid barrel. CONSTITUTION:A focusing ring 6 and a zoom ring 7 are held rotatably to a stationary barrel 1, and double helicoids are disposed between the inside and outside barrels thereof. The helicoid female 2 is engaged to the 3rd, 5th group lens frames 9 and the 4th group lens frame 10 by cam grooves 2-4, 2-5, and to the 2nd group lens frame 8 by a guide groove 2-3. A focus sliding shaft 4 secured with the 1st group lens is disposed on the inner side of the helicoid male 3, and a focus control ring 5 is held rotatably. Hence, by the use of the double helicoids for the purpose of zooming, the lens barrel length at the wide angle is shortened, and the movement of the lenses at the telephotographing is stabilized.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11295280A JPS5737306A (en) | 1980-08-19 | 1980-08-19 | Lens barrel for high variable magnification zoom lens |
GB8124964A GB2084346B (en) | 1980-08-19 | 1981-08-14 | A lens tube for a high vari-focal ratio zoom lens |
US06/586,652 US4534625A (en) | 1980-08-19 | 1984-03-08 | Lens tube for a high vari-focal ratio zoom lens |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11295280A JPS5737306A (en) | 1980-08-19 | 1980-08-19 | Lens barrel for high variable magnification zoom lens |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5737306A true JPS5737306A (en) | 1982-03-01 |
JPH0323889B2 JPH0323889B2 (en) | 1991-03-29 |
Family
ID=14599629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11295280A Granted JPS5737306A (en) | 1980-08-19 | 1980-08-19 | Lens barrel for high variable magnification zoom lens |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5737306A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6197612A (en) * | 1984-10-19 | 1986-05-16 | Mamiya Koki Kk | Zoom lens provided with lens shutter |
JPS63304216A (en) * | 1987-06-04 | 1988-12-12 | Nikon Corp | Extending device for photographing lens |
JPH027634U (en) * | 1988-06-27 | 1990-01-18 | ||
JPH02119610U (en) * | 1989-03-14 | 1990-09-26 | ||
US5469300A (en) * | 1989-10-27 | 1995-11-21 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens barrel |
KR100326541B1 (en) * | 1998-09-07 | 2002-09-27 | 삼성테크윈 주식회사 | Camera with zoom lens barrel drive system |
JP2010055124A (en) * | 2009-12-10 | 2010-03-11 | Tamron Co Ltd | Zoom lens |
-
1980
- 1980-08-19 JP JP11295280A patent/JPS5737306A/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6197612A (en) * | 1984-10-19 | 1986-05-16 | Mamiya Koki Kk | Zoom lens provided with lens shutter |
JPS63304216A (en) * | 1987-06-04 | 1988-12-12 | Nikon Corp | Extending device for photographing lens |
JPH027634U (en) * | 1988-06-27 | 1990-01-18 | ||
JPH0544806Y2 (en) * | 1988-06-27 | 1993-11-15 | ||
JPH02119610U (en) * | 1989-03-14 | 1990-09-26 | ||
US5469300A (en) * | 1989-10-27 | 1995-11-21 | Asahi Kogaku Kogyo Kabushiki Kaisha | Zoom lens barrel |
KR100326541B1 (en) * | 1998-09-07 | 2002-09-27 | 삼성테크윈 주식회사 | Camera with zoom lens barrel drive system |
JP2010055124A (en) * | 2009-12-10 | 2010-03-11 | Tamron Co Ltd | Zoom lens |
Also Published As
Publication number | Publication date |
---|---|
JPH0323889B2 (en) | 1991-03-29 |
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