JPS63199234U - - Google Patents
Info
- Publication number
- JPS63199234U JPS63199234U JP8741287U JP8741287U JPS63199234U JP S63199234 U JPS63199234 U JP S63199234U JP 8741287 U JP8741287 U JP 8741287U JP 8741287 U JP8741287 U JP 8741287U JP S63199234 U JPS63199234 U JP S63199234U
- Authority
- JP
- Japan
- Prior art keywords
- electrostrictive element
- shutter
- driven
- opening area
- maximum opening
- 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
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Shutters For Cameras (AREA)
- Details Of Measuring And Other Instruments (AREA)
Description
第１図は本考案の一実施例を従来例と対比させ
て説明するための波形図、第２，３図は同実施例
の回路図、及び機構図である。
３……バイモルフ素子、４……軸、５……開閉
レバー、５ｂ，５ｃ……下向ピン、７，８……シ
ヤツタ羽根、１３……ナンド回路、１５……定電
流源、Ｓ１……レリーズスイツチ、Ｓ２……トリ
ガースイツチ、Ｄ１……ダイオード、Ｃ１……コ
ンデンサ。
FIG. 1 is a waveform diagram for explaining an embodiment of the present invention in comparison with a conventional example, and FIGS. 2 and 3 are a circuit diagram and a mechanism diagram of the embodiment. 3... Bimorph element, 4... Shaft, 5... Open/close lever, 5b, 5c... Downward pin, 7, 8... Shutter blade, 13... NAND circuit, 15... Constant current source, S 1 ... ...Release switch, S2 ...Trigger switch, D1 ...Diode, C1 ...Capacitor.
Claims (1)
械的な歪を駆動力源としてシヤツタ羽根７，８を
駆動し、露出量を制御する際にシヤツタ羽根７，
８の最大開口面積Ｆの変化を利用するようにした
カメラ用シヤツタにおいて、シヤツタ羽根７，８
の閉鎖時に電歪素子３に印加する逆電圧を、最大
開口面積が小さい時Ｆ１には高く−Ｖ３、最大開
口面積が大きい時Ｆ２，Ｆ３には低く−Ｖ２，−
Ｖ１、したことを特徴とする電歪素子駆動型のカ
メラ用シヤツタ。 (2) 前記最大開口面積が全開口径Ｆ３を含むと
き、前記電歪素子３に印加する逆電圧−Ｖ１が−
Ｖ１＝Ｏボルトである実用新案登録請求の範囲第
１項に記載の電歪素子駆動型カメラ用シヤツタ。[Claims for Utility Model Registration] (1) Shutter blades 7 and 8 are driven using the mechanical strain generated in the electrostrictive element 3 by the applied voltage V as a driving force source, and the shutter blades are used when controlling the amount of exposure. 7,
In a camera shutter that utilizes the change in the maximum opening area F of shutter blades 7 and 8,
When the maximum opening area is small, the reverse voltage applied to the electrostrictive element 3 is set to be high -V 3 for F 1 and low for F 2 and F 3 when the maximum opening area is large, -V 2 , -.
V 1 , an electrostrictive element-driven shutter for a camera. (2) When the maximum aperture area includes the entire aperture diameter F3 , the reverse voltage -V1 applied to the electrostrictive element 3 is -
An electrostrictive element-driven camera shutter according to claim 1, wherein V 1 =O volts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987087412U JPH073391Y2 (en) | 1987-06-05 | 1987-06-05 | Electrostrictive element drive type camera shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987087412U JPH073391Y2 (en) | 1987-06-05 | 1987-06-05 | Electrostrictive element drive type camera shutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63199234U true JPS63199234U (en) | 1988-12-22 |
| JPH073391Y2 JPH073391Y2 (en) | 1995-01-30 |
Family
ID=30944599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987087412U Expired - Lifetime JPH073391Y2 (en) | 1987-06-05 | 1987-06-05 | Electrostrictive element drive type camera shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073391Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62155030A (en) * | 1985-12-28 | 1987-07-10 | 三菱電機株式会社 | Plant culture apparatus |
| JPS6344642A (en) * | 1986-08-12 | 1988-02-25 | Minolta Camera Co Ltd | Shutter driving device |
-
1987
- 1987-06-05 JP JP1987087412U patent/JPH073391Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62155030A (en) * | 1985-12-28 | 1987-07-10 | 三菱電機株式会社 | Plant culture apparatus |
| JPS6344642A (en) * | 1986-08-12 | 1988-02-25 | Minolta Camera Co Ltd | Shutter driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH073391Y2 (en) | 1995-01-30 |