JPH0217705U - - Google Patents
Info
- Publication number
- JPH0217705U JPH0217705U JP9617788U JP9617788U JPH0217705U JP H0217705 U JPH0217705 U JP H0217705U JP 9617788 U JP9617788 U JP 9617788U JP 9617788 U JP9617788 U JP 9617788U JP H0217705 U JPH0217705 U JP H0217705U
- Authority
- JP
- Japan
- Prior art keywords
- cam ring
- groups
- movable
- movable lenses
- roller
- 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims 1
Landscapes
- Lens Barrels (AREA)
Description
第１図、第２図は本考案によるズームレンズの
ガタ除去装置の実施例を示す上半断面図で、第１
図は広角端、第２図は望遠端の状態を示している
。
１２……ガイドロツド、１３……前固定板（固
定部材）、１４……カムリング、１６……前群用
進退レンズ枠、１７，１９……ローラ、１８……
後群用進退レンズ枠、２０……前群用ズーミング
カム溝、２１……後群用ズーミングカム溝、３０
……円錐コイルばね。
FIGS. 1 and 2 are upper half sectional views showing an embodiment of the zoom lens backlash removal device according to the present invention.
The figure shows the state at the wide-angle end, and FIG. 2 shows the state at the telephoto end. 12...Guide rod, 13...Front fixing plate (fixing member), 14...Cam ring, 16...Movement/retraction lens frame for front group, 17, 19...Roller, 18...
Retractable lens frame for rear group, 20...Zooming cam groove for front group, 21...Zooming cam groove for rear group, 30
...Conical coil spring.
Claims (1)
合するローラを有する、少なくとも前後２群の可
動レンズを備え、カムリングの回動に伴ないこれ
ら可動レンズが光軸方向に移動してズーミングが
なされるズームレンズにおいて、上記前後２群の
可動レンズを支持する枠体の間に、円錐コイルば
ねを挿入したことを特徴とするズームレンズのガ
タ除去装置。 At least two groups of movable lenses, front and rear, each having a roller that engages with a cam groove provided in a rotationally driven cam ring are provided, and as the cam ring rotates, these movable lenses move in the optical axis direction to perform zooming. A backlash removal device for a zoom lens, characterized in that a conical coil spring is inserted between a frame supporting the two front and rear movable lens groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9617788U JPH0217705U (en) | 1988-07-20 | 1988-07-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9617788U JPH0217705U (en) | 1988-07-20 | 1988-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0217705U true JPH0217705U (en) | 1990-02-06 |
Family
ID=31321015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9617788U Pending JPH0217705U (en) | 1988-07-20 | 1988-07-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0217705U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006178361A (en) * | 2004-12-24 | 2006-07-06 | Kyocera Corp | Optical device and camera module |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6339205B2 (en) * | 1981-01-14 | 1988-08-04 | Mitsubishi Agricult Mach |
-
1988
- 1988-07-20 JP JP9617788U patent/JPH0217705U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6339205B2 (en) * | 1981-01-14 | 1988-08-04 | Mitsubishi Agricult Mach |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006178361A (en) * | 2004-12-24 | 2006-07-06 | Kyocera Corp | Optical device and camera module |
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