JPS626711U - - Google Patents
Info
- Publication number
- JPS626711U JPS626711U JP9777685U JP9777685U JPS626711U JP S626711 U JPS626711 U JP S626711U JP 9777685 U JP9777685 U JP 9777685U JP 9777685 U JP9777685 U JP 9777685U JP S626711 U JPS626711 U JP S626711U
- Authority
- JP
- Japan
- Prior art keywords
- substantially vertically
- elongated shape
- diaphragm unit
- vertically elongated
- zoom lens
- 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 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Lens Barrels (AREA)
- Diaphragms For Cameras (AREA)
- Lenses (AREA)
Description
第１図ａは従来のズームレンズ鏡筒の断面図。
第１図ｂは従来の絞りユニツトの説明図。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ａＡ１
―Ａ２方向断面図。第２図ｄは絞りユニツトの平
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
用レンズ、Ｄ……絞りユニツト、Ｌ３……補正用
レンズ、Ｌ４……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. 1a is a sectional view of a conventional zoom lens barrel.
FIG. 1b is an explanatory diagram of a conventional aperture unit. 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 2 c is Figure 2 aA 1
-A Two -way sectional view. FIG. 2d is a plan view of the aperture unit. FIG. 3 is a sectional view of another embodiment of the present invention. L1 ... Focus lens, L2 ... Lens for zooming, D... Aperture unit, L3 ... Correction lens, L4 ... Relay lens, 22... Fixed tube, 23, 24... Lens holder, 25...guide bar, 34...cam tube.
Claims (1)
動レンズ群を共軸に保持する少なくとも２本のガ
イドバーと前記移動レンズ群の外周に固定鏡筒と
を有し、かつ前記ガイドバーに挾まれた空間内に
固定の絞りユニツトを有するズームレンズに於て
、 前記絞りユニツトは略縦長形状をしており、前
記固定筒に設けられたラジアル方向の貫通部から
前記ガイドバーを避けて光軸と絞り口径中心の一
致を保つように前記絞りユニツトを挿入して固定
する事を特徴とするズームレンズ鏡筒。 (2) 前記ズームレンズ鏡筒において、 前記絞りユニツトの取付板の一端に位置決め用
のピンを植設し、前記ピンは前記取付板を挿入す
る固定筒の開口部に設けた係合部と係合するよう
にしたことを特徴とする実用新案登録請求の範囲
第(1)項記載のズームレンズ鏡筒。[Claims for Utility Model Registration] (1) At least two guide bars that coaxially hold at least two movable lens groups that can be displaced in the optical axis direction, and a fixed lens barrel on the outer periphery of the movable lens groups. In a zoom lens having a fixed diaphragm unit in a space sandwiched by the guide bar, the diaphragm unit has a substantially vertically elongated shape, and the diaphragm unit has a substantially vertically elongated shape, and the diaphragm unit has a substantially vertically elongated shape, and the diaphragm unit has a substantially vertically elongated shape, and the diaphragm unit has a substantially vertically elongated shape, and the diaphragm unit has a substantially vertically elongated shape, and the diaphragm unit has a substantially vertically elongated shape, and the diaphragm unit has a substantially vertically elongated shape. A zoom lens barrel characterized in that the aperture unit is inserted and fixed so that the optical axis and the center of the aperture aperture are aligned while avoiding the guide bar. (2) In the zoom lens barrel, a positioning pin is embedded in one end of the mounting plate of the aperture unit, and the pin engages with an engaging portion provided in an opening of the fixed barrel into which the mounting plate is inserted. 1. A zoom lens barrel according to claim (1) of the utility model registration, characterized in that the zoom lens barrel is adapted to be aligned with each other.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9777685U JPS626711U (en) | 1985-06-27 | 1985-06-27 | |
| 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 |
|---|---|---|---|
| JP9777685U JPS626711U (en) | 1985-06-27 | 1985-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS626711U true JPS626711U (en) | 1987-01-16 |
Family
ID=30965082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9777685U Pending JPS626711U (en) | 1985-06-27 | 1985-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS626711U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63309933A (en) * | 1987-06-10 | 1988-12-19 | Matsushita Electric Ind Co Ltd | Photographing device |
| JP2007271670A (en) * | 2006-03-30 | 2007-10-18 | Nidec Copal Corp | Lens barrel and assembling method therefor |
-
1985
- 1985-06-27 JP JP9777685U patent/JPS626711U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63309933A (en) * | 1987-06-10 | 1988-12-19 | Matsushita Electric Ind Co Ltd | Photographing device |
| JP2007271670A (en) * | 2006-03-30 | 2007-10-18 | Nidec Copal Corp | Lens barrel and assembling method therefor |
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