JPS6433510A - Lens barrel of zoom lens - Google Patents
Lens barrel of zoom lensInfo
- Publication number
- JPS6433510A JPS6433510A JP18884387A JP18884387A JPS6433510A JP S6433510 A JPS6433510 A JP S6433510A JP 18884387 A JP18884387 A JP 18884387A JP 18884387 A JP18884387 A JP 18884387A JP S6433510 A JPS6433510 A JP S6433510A
- Authority
- JP
- Japan
- Prior art keywords
- cam
- cam groove
- groups
- iii
- group
- 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
Abstract
PURPOSE:To reduce the number of cam grooves and to reduce the-entire length of a cam cylinder, by fitting the cam followers of at least two movable lens groups with different travel quantities among plural movable lens groups in the same cam groove, and applying different travel control on them, respectively. CONSTITUTION:By giving turning on the cam cylinder centering an optical axis, prescribed travel quantities are given on a group I by the cam groove 1a for group I, and on the groups II and III by the cam groove 1b for the groups II and III, then, zooming are performed. At this time, the cam followers 3 and 4 for the groups II and III are fitted in the same cam groove 1b, and also, their holding frames are pressed with each other in the direction of the optical axis, therefore, the travel control are applied on the group II by the end face on the object side of the cam groove 1b, and on the group III by the end face on the image side. In such a way, it is possible to share the cam groove for plural lens groups, and to facilitate the layout of the cam groove, and also, to lower a cost by reducing the number of cam grooves resulting in the compactness of the cam cylinder.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62188843A JP2543713B2 (en) | 1987-07-30 | 1987-07-30 | Variable focal length lens barrel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62188843A JP2543713B2 (en) | 1987-07-30 | 1987-07-30 | Variable focal length lens barrel |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6433510A true JPS6433510A (en) | 1989-02-03 |
JP2543713B2 JP2543713B2 (en) | 1996-10-16 |
Family
ID=16230811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62188843A Expired - Fee Related JP2543713B2 (en) | 1987-07-30 | 1987-07-30 | Variable focal length lens barrel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2543713B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05241058A (en) * | 1992-02-28 | 1993-09-21 | Canon Inc | Lens frame moving mechanism for camera |
JP2011008046A (en) * | 2009-06-26 | 2011-01-13 | Hoya Corp | Linear guide mechanism of lens barrel |
WO2017134938A1 (en) * | 2016-02-02 | 2017-08-10 | ソニー株式会社 | Optical element drive device, interchangeable lens, and image pickup device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5810707A (en) * | 1981-07-13 | 1983-01-21 | Olympus Optical Co Ltd | Lens barrel having moving mechanism for lens group |
JPS6098805U (en) * | 1984-09-27 | 1985-07-05 | キヤノン株式会社 | Zoom lens cam mechanism |
-
1987
- 1987-07-30 JP JP62188843A patent/JP2543713B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5810707A (en) * | 1981-07-13 | 1983-01-21 | Olympus Optical Co Ltd | Lens barrel having moving mechanism for lens group |
JPS6098805U (en) * | 1984-09-27 | 1985-07-05 | キヤノン株式会社 | Zoom lens cam mechanism |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05241058A (en) * | 1992-02-28 | 1993-09-21 | Canon Inc | Lens frame moving mechanism for camera |
JP2011008046A (en) * | 2009-06-26 | 2011-01-13 | Hoya Corp | Linear guide mechanism of lens barrel |
WO2017134938A1 (en) * | 2016-02-02 | 2017-08-10 | ソニー株式会社 | Optical element drive device, interchangeable lens, and image pickup device |
JPWO2017134938A1 (en) * | 2016-02-02 | 2018-11-29 | ソニー株式会社 | Optical element driving device, interchangeable lens, and imaging device |
Also Published As
Publication number | Publication date |
---|---|
JP2543713B2 (en) | 1996-10-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
LAPS | Cancellation because of no payment of annual fees |