JPS6281917U - - Google Patents
Info
- Publication number
- JPS6281917U JPS6281917U JP17361485U JP17361485U JPS6281917U JP S6281917 U JPS6281917 U JP S6281917U JP 17361485 U JP17361485 U JP 17361485U JP 17361485 U JP17361485 U JP 17361485U JP S6281917 U JPS6281917 U JP S6281917U
- Authority
- JP
- Japan
- Prior art keywords
- holding frame
- lens holding
- rotating ring
- groove provided
- fixed cylinder
- 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図は本考案の一実施例のズームレンズ鏡筒
の縦断面図、第２図はそのズームレンズ鏡筒の広
角端状態における関係を示す要部展開図、第３図
は同じく望遠端状態における関係を示す要部展開
図である。
１……固定筒、１ａ，１ｂ……カム溝、２……
中間筒、２ｅ……周溝、４……操作部材、５……
第１レンズ保持枠、６……第２レンズ保持枠、６
ａ……キー部、６ｂ……係合ピン、７……回転リ
ング、７ａ……直進キー溝、７ｂ……係合ピン、
９……第３レンズ保持枠、Ｌ１……フオーカスレ
ンズ、Ｌ２……補正系レンズ、Ｌ３……リレーレ
ンズ群。
Fig. 1 is a vertical cross-sectional view of a zoom lens barrel according to an embodiment of the present invention, Fig. 2 is an exploded view of the main parts showing the relationship of the zoom lens barrel at the wide-angle end state, and Fig. 3 is the same at the telephoto end state. FIG. 1...Fixed tube, 1a, 1b...Cam groove, 2...
Intermediate cylinder, 2e... Circumferential groove, 4... Operation member, 5...
First lens holding frame, 6...Second lens holding frame, 6
a...key part, 6b...engaging pin, 7...rotating ring, 7a...straight key groove, 7b...engaging pin,
9...Third lens holding frame, L1 ...Focus lens, L2 ...Correction system lens, L3 ...Relay lens group.
Claims (1)
体的に直進する中間筒を有し、該固定筒の内径部
に回転リングとレンズ保持枠を嵌装し、該レンズ
保持枠に設けたキー部を該回転リングに設けた直
進キー溝と嵌合させ、該回転リングには該固定筒
に設けたカム溝を貫通して該中間筒に設けた周溝
の交点に係合する係合ピンを設け、該操作部材の
直進操作によつて該係合ピン及び該回転リングを
介して該レンズ保持枠に回動運動を与えるように
し、かつ該レンズ保持枠に設けた係合ピンを該固
定筒に設けた別のカム溝に係合させて該レンズ保
持枠の回動運動を光軸に沿う方向の運動に変換す
るようにしたズームレンズ鏡筒。 An intermediate cylinder is provided between the fixed cylinder and the single operating member, and a rotating ring and a lens holding frame are fitted to the inner diameter part of the fixed cylinder, and a rotating ring and a lens holding frame are provided on the lens holding frame. The key portion is fitted into a straight key groove provided on the rotating ring, and the rotating ring has a locking member that passes through a cam groove provided on the fixed cylinder and engages with an intersection of a circumferential groove provided on the intermediate cylinder. A dowel pin is provided, and rotational movement is applied to the lens holding frame via the engagement pin and the rotation ring by linear operation of the operating member, and the engagement pin provided on the lens holding frame is A zoom lens barrel configured to engage another cam groove provided in the fixed barrel to convert rotational movement of the lens holding frame into movement in a direction along an optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17361485U JPS6281917U (en) | 1985-11-13 | 1985-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17361485U JPS6281917U (en) | 1985-11-13 | 1985-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6281917U true JPS6281917U (en) | 1987-05-25 |
Family
ID=31111238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17361485U Pending JPS6281917U (en) | 1985-11-13 | 1985-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6281917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63304215A (en) * | 1987-06-04 | 1988-12-12 | Nikon Corp | Zoom lens barrel |
-
1985
- 1985-11-13 JP JP17361485U patent/JPS6281917U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63304215A (en) * | 1987-06-04 | 1988-12-12 | Nikon Corp | Zoom lens barrel |
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