JPS62113332U - - Google Patents
Info
- Publication number
- JPS62113332U JPS62113332U JP1986001910U JP191086U JPS62113332U JP S62113332 U JPS62113332 U JP S62113332U JP 1986001910 U JP1986001910 U JP 1986001910U JP 191086 U JP191086 U JP 191086U JP S62113332 U JPS62113332 U JP S62113332U
- Authority
- JP
- Japan
- Prior art keywords
- aperture
- cam
- extension
- motor
- blades
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Exposure Control For Cameras (AREA)
- Diaphragms For Cameras (AREA)
Description
第１図は本考案を適用したレンズ鏡筒の断面図
。第２図は絞り駆動ユニツトの要部断面図。第３
図は第２図の展開斜視図。第４ａ図、第４ｂ図は
スイツチの作動説明図。第５図はカム部材の平面
図。第６ａ図、第６ｂ図はスイツチの動作説明図
。
FIG. 1 is a sectional view of a lens barrel to which the present invention is applied. FIG. 2 is a sectional view of the main parts of the aperture drive unit. Third
The figure is a developed perspective view of FIG. 2. Figures 4a and 4b are explanatory diagrams of the operation of the switch. FIG. 5 is a plan view of the cam member. FIGS. 6a and 6b are explanatory diagrams of the operation of the switch.
Claims (1)
絞り羽根を最小絞り口径から最大絞り口径に制御
する第１のカムを備えたカム部材と、前記カム部
材を作動するモータと、前記絞り羽根の最大絞り
口径を検出する手段を有し、前記カム部材の第１
のカムは絞り口径が最大絞り口径に達して更に絞
り羽根を回動する延長カムを設け、前記検出手段
は前記延長カム部で作動することを特徴とするモ
ータ駆動による絞り装置。 (2) 前記延長カムは前記第１のカムの最大絞り
口径位置より更に絞り口径を大きく開く開放カム
部を有したことを特徴とする実用新案登録請求の
範囲第(1)項記載のモータ駆動による絞り装置。 (3) 前記延長カムの前記開放カム部の先に該開
放カム部の位置と光軸までの距離を半径とする同
じ半径の延長部を設けたことを特徴とする実用新
案登録請求の範囲第(2)項記載のモータ駆動によ
る絞り装置。[Claims for Utility Model Registration] (1) A cam member comprising a plurality of aperture blades that determine an aperture aperture, a first cam that controls the aperture blades from a minimum aperture aperture to a maximum aperture aperture, and the cam member. a motor that operates, and means for detecting the maximum aperture diameter of the aperture blades,
A motor-driven aperture device, characterized in that the cam is provided with an extension cam that further rotates the aperture blades when the aperture diameter reaches the maximum aperture diameter, and the detection means is operated by the extension cam portion. (2) The motor drive according to claim 1, wherein the extension cam has an open cam portion that opens the aperture diameter further than the maximum aperture aperture position of the first cam. A squeezing device. (3) Utility model registration claim 1, characterized in that the extension cam is provided at the tip of the opening cam part with an extension part having the same radius as the position of the opening cam part and the distance to the optical axis. The motor-driven aperture device described in (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986001910U JPH0641224Y2 (en) | 1986-01-10 | 1986-01-10 | A diaphragm device driven by a motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986001910U JPH0641224Y2 (en) | 1986-01-10 | 1986-01-10 | A diaphragm device driven by a motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62113332U true JPS62113332U (en) | 1987-07-18 |
| JPH0641224Y2 JPH0641224Y2 (en) | 1994-10-26 |
Family
ID=30780259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986001910U Expired - Lifetime JPH0641224Y2 (en) | 1986-01-10 | 1986-01-10 | A diaphragm device driven by a motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0641224Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122522A (en) * | 1982-01-18 | 1983-07-21 | Canon Inc | Structure of photographic lens driven by electromagnetic force |
-
1986
- 1986-01-10 JP JP1986001910U patent/JPH0641224Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58122522A (en) * | 1982-01-18 | 1983-07-21 | Canon Inc | Structure of photographic lens driven by electromagnetic force |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0641224Y2 (en) | 1994-10-26 |