JPS5973722U - Moving aperture of zoom lens - Google Patents
Moving aperture of zoom lensInfo
- Publication number
- JPS5973722U JPS5973722U JP16853782U JP16853782U JPS5973722U JP S5973722 U JPS5973722 U JP S5973722U JP 16853782 U JP16853782 U JP 16853782U JP 16853782 U JP16853782 U JP 16853782U JP S5973722 U JPS5973722 U JP S5973722U
- Authority
- JP
- Japan
- Prior art keywords
- group lens
- zoom lens
- lens
- zooming
- aperture
- 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
Landscapes
- Diaphragms For Cameras (AREA)
- Lens Barrels (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の一実施例における前後群レンー ズ及
び移動絞りのズーミングによる移動を示す説明図、第２
図、第３図、第４図は各々本考案の一実施例の広角端、
中間、望遠端のズーム位置にお： けるズームレンズ
の構成の説明図である。
： 図中、１・・・・・・固定筒、２・・回前群鏡
筒、３・・回前群移動環、４・・・・・・ガイドピン、
５・・曲後群移動、環、６・・・・・・ガイドピン、７
・・曲カム筒、８・・−−−−ス１ −ム操作リング、
９・・・・・・移動絞り、１ｏ・・曲スプリングである
。Figure 1 is an explanatory diagram showing the movement of the front and rear lens groups and the movable diaphragm during zooming in one embodiment of the present invention;
Figures 3 and 4 show the wide-angle end of an embodiment of the present invention, respectively.
FIG. 2 is an explanatory diagram of the configuration of a zoom lens at intermediate and telephoto end zoom positions. : In the figure, 1... fixed barrel, 2... front group lens barrel, 3... front group moving ring, 4... guide pin,
5... group movement after bending, ring, 6... guide pin, 7
・・Curved cam tube, 8・・・・・・S 1 -m operation ring,
9...Moving aperture, 1o...Curved spring.
Claims (3)
と後群レンズの相対的位置を変化させてズーミングを行
なうズームレンズにおいて、前記前群レンズと後群レン
ズとの間にズーミングの際に、 前記前群レンズ若しくは後群レンズの一方と共に光軸上
移動し、かつズーミングの途中より前記前群レンズ若し
くは後群レンズの他方と共に光軸上移動する移動絞りを
配置したことを特徴とするズームレンズの移動絞り。(1) In a zoom lens that has a front group lens and a rear group lens and performs zooming by changing the relative positions of the front group lens and the rear group lens, there is no zooming between the front group lens and the rear group lens. In this case, a movable diaphragm is disposed that moves along the optical axis together with one of the front group lens or the rear group lens, and moves along the optical axis together with the other of the front group lens or the rear group lens from the middle of zooming. The moving aperture of a zoom lens.
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
のズームレンズの移動絞り。(2) The movable diaphragm of a zoom lens according to claim 1, wherein the aperture of the movable diaphragm is changed with zooming.
スプリング等の弾性部材により一方向に付勢しているこ
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の移動絞り。(3) Movement of the zoom lens according to item 1 within the scope of the utility model registration claim, characterized in that the movable diaphragm is biased in one direction by an elastic member such as a spring from a fixed part of the zoom lens. Aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16853782U JPS5973722U (en) | 1982-11-06 | 1982-11-06 | Moving aperture of zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16853782U JPS5973722U (en) | 1982-11-06 | 1982-11-06 | Moving aperture of zoom lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5973722U true JPS5973722U (en) | 1984-05-18 |
Family
ID=30368421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16853782U Pending JPS5973722U (en) | 1982-11-06 | 1982-11-06 | Moving aperture of zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5973722U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025714U (en) * | 1988-06-24 | 1990-01-16 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677810A (en) * | 1979-11-28 | 1981-06-26 | Ricoh Co Ltd | Preventing device for internal reflection of zoom lens |
-
1982
- 1982-11-06 JP JP16853782U patent/JPS5973722U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677810A (en) * | 1979-11-28 | 1981-06-26 | Ricoh Co Ltd | Preventing device for internal reflection of zoom lens |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH025714U (en) * | 1988-06-24 | 1990-01-16 |
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