JPS629224U - - Google Patents
Info
- Publication number
- JPS629224U JPS629224U JP9977885U JP9977885U JPS629224U JP S629224 U JPS629224 U JP S629224U JP 9977885 U JP9977885 U JP 9977885U JP 9977885 U JP9977885 U JP 9977885U JP S629224 U JPS629224 U JP S629224U
- Authority
- JP
- Japan
- Prior art keywords
- diaphragm
- lens
- cam member
- lenses
- correction
- 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
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
- Lenses (AREA)
Description
第１図は従来のズームレンズ鏡筒の断面図。第
２図ａは本考案のズームレンズ鏡筒の断面図。第
２図ｂは第２図ａに示したズームレンズのズーミ
ング時の移動軌跡を示す図。第２図ｃは第２図ａ
Ａ１―Ａ２方向断面図。第３図は本考案の他の実
施例の断面図。
Ｌ１…フオーカス用レンズ、Ｌ２…変倍用レン
ズ、Ｄ…絞りユニツト、Ｌ３…補正用レンズ、Ｌ
４…リレーレンズ、２２…固定筒、２３，２４…
レンズホルダー、２５…ガイドバー、３４…カム
筒。
FIG. 1 is a sectional view of a conventional zoom lens barrel. FIG. 2a is a sectional view of the zoom lens barrel of the present invention. FIG. 2b is a diagram showing a movement locus of the zoom lens shown in FIG. 2a during zooming. Figure 2c is Figure 2a
A 1 - A 2 direction sectional view. FIG. 3 is a sectional view of another embodiment of the present invention. L1 ...Focus lens, L2 ...variable magnification lens, D...aperture unit, L3 ...correction lens, L
4 ... Relay lens, 22... Fixed tube, 23, 24...
Lens holder, 25...guide bar, 34...cam tube.
Claims (1)
記第１・第２のレンズを保持する第１・第２のレ
ンズホルダーと、ズームリングと、 及び前記第１・第２レンズホルダーをズームリ
ングの操作によつて移動制御するカム部材と並び
に絞りを有し、 前記絞りは前記変倍用レンズと補正用レンズの
間に配し、前記カム部材は前記絞りの前側又は後
側の一方に配し、前記カム部材のカム軌跡は前記
第１・第２のレンズは前記絞りに対して前後移動
するように設けたことを特徴とするズームレンズ
鏡筒。[Claims for Utility Model Registration] First and second lenses for zooming or correction, first and second lens holders that hold the first and second lenses, a zoom ring, and A cam member for controlling the movement of the first and second lens holders by operating a zoom ring and a diaphragm are provided, the diaphragm is disposed between the variable power lens and the correction lens, and the cam member is A zoom lens barrel, characterized in that the cam member is disposed on either the front side or the rear side of the diaphragm, and the cam locus of the cam member is such that the first and second lenses move back and forth with respect to the diaphragm. .
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9977885U JPS629224U (en) | 1985-06-28 | 1985-06-28 | |
| US06/877,871 US4865433A (en) | 1985-06-27 | 1986-06-24 | Zoom lens incorporating diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9977885U JPS629224U (en) | 1985-06-28 | 1985-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS629224U true JPS629224U (en) | 1987-01-20 |
Family
ID=30968973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9977885U Pending JPS629224U (en) | 1985-06-27 | 1985-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS629224U (en) |
-
1985
- 1985-06-28 JP JP9977885U patent/JPS629224U/ja active Pending