JPH03129938U - - Google Patents
Info
- Publication number
- JPH03129938U JPH03129938U JP3724490U JP3724490U JPH03129938U JP H03129938 U JPH03129938 U JP H03129938U JP 3724490 U JP3724490 U JP 3724490U JP 3724490 U JP3724490 U JP 3724490U JP H03129938 U JPH03129938 U JP H03129938U
- Authority
- JP
- Japan
- Prior art keywords
- blade
- position detection
- lever
- shutter
- closing
- 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 description 9
- 230000003287 optical effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Shutters For Cameras (AREA)
Description
第１図は本考案に係るズームレンズ用シヤツタ
ーの一実施例の要部平面図、第２図及び第３図は
ズームレンズ用シヤツターとレンズ繰り出し機構
の従来例を示す平面図及び断面図である。
１……前枠、２……基板、３……ガイド軸、４
……ズーム環、５……ステツピングモータ、６…
…ピニオン、７……伝達ギヤ群、８……レンズ繰
り出し用カム、９……ストツパーダボ、１０……
ガイド軸、１１……後レンズ筒、１２……バネ、
１３……前レンズ筒、１４……焦点調整ピン、１
６……アクチユエータ、１７……シヤツター羽根
開閉レバー、１７ａ……突起、１７ａ′……当接
面、１８，１９……シヤツター羽根、２０……光
検出素子、２１……レンズ位置検出レバー、２１
ｂ……突部、２２……バネ。
FIG. 1 is a plan view of a main part of an embodiment of a zoom lens shutter according to the present invention, and FIGS. 2 and 3 are a plan view and a sectional view showing a conventional example of a zoom lens shutter and a lens feeding mechanism. . 1... Front frame, 2... Board, 3... Guide shaft, 4
...Zoom ring, 5...Stepping motor, 6...
...Pinion, 7...Transmission gear group, 8...Cam for feeding out lens, 9...Stopper dowel, 10...
Guide shaft, 11... Rear lens barrel, 12... Spring,
13...Front lens barrel, 14...Focus adjustment pin, 1
6... Actuator, 17... Shutter blade opening/closing lever, 17a... Protrusion, 17a'... Contact surface, 18, 19... Shutter blade, 20... Photo detection element, 21... Lens position detection lever, 21
b...protrusion, 22...spring.
Claims (1)
め得る羽根開閉レバーと該羽根開閉レバーを往復
動せしめ得るアクチユエータとを装備したレンズ
筒を光軸方向へ移動可能に支持するズーミング用
の可動フレーム体と、該可動フレーム体上に装備
されていて上記レンズ筒を移動せしめ得る合焦用
カム部材と、上記レンズ筒又は可動フレーム体上
に枢着されていて一端が上記羽根開閉レバーに他
端が上記カム部材に当接可能に位置検出レバーと
、上記レンズ筒上に設けられていて上記シヤツタ
ー羽根を協働し得る位置検出センサーとを備えて
いて、上記カム部材が基準位置から回動した時上
記位置検出レバーの回動により上記羽根開閉レバ
ーが僅かに羽根閉鎖方向へ回動せしめられて上記
位置検出センサーからスタート位置検出信号が発
せられるようになつているズームレンズ用シヤツ
ターにおいて、上記羽根開閉レバーと上記位置検
出レバーとの当接関係が、上記位置検出レバーの
回動量とは無関係に上記羽根開閉レバーが所定の
一定量だけしか回動せしめられ得ないように選定
されていることを特徴とするズームレンズ用シヤ
ツター。 A movable frame body for zooming that supports a lens barrel movably in the optical axis direction, which is equipped with a shutter blade, a blade opening/closing lever capable of opening and closing the shutter blade, and an actuator capable of reciprocating the blade opening/closing lever; A focusing cam member that is mounted on the frame body and can move the lens barrel, and a focusing cam member that is pivotally mounted on the lens barrel or the movable frame body and has one end attached to the blade opening/closing lever and the other end attached to the cam member. a position detection lever that can be contacted and a position detection sensor that is provided on the lens barrel and that can cooperate with the shutter blade, and when the cam member rotates from a reference position, the position detection lever In a zoom lens shutter, the blade opening/closing lever is slightly rotated in the blade closing direction by the rotation of the lens, and a start position detection signal is emitted from the position detection sensor. A zoom lens characterized in that the contact relationship with the detection lever is selected such that the blade opening/closing lever can only be rotated by a predetermined constant amount, regardless of the amount of rotation of the position detection lever. Shutter for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3724490U JP2533650Y2 (en) | 1990-04-06 | 1990-04-06 | Shutter for zoom lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3724490U JP2533650Y2 (en) | 1990-04-06 | 1990-04-06 | Shutter for zoom lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03129938U true JPH03129938U (en) | 1991-12-26 |
| JP2533650Y2 JP2533650Y2 (en) | 1997-04-23 |
Family
ID=31544180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3724490U Expired - Fee Related JP2533650Y2 (en) | 1990-04-06 | 1990-04-06 | Shutter for zoom lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2533650Y2 (en) |
-
1990
- 1990-04-06 JP JP3724490U patent/JP2533650Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2533650Y2 (en) | 1997-04-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |