JPS6341133U - - Google Patents
Info
- Publication number
- JPS6341133U JPS6341133U JP13427186U JP13427186U JPS6341133U JP S6341133 U JPS6341133 U JP S6341133U JP 13427186 U JP13427186 U JP 13427186U JP 13427186 U JP13427186 U JP 13427186U JP S6341133 U JPS6341133 U JP S6341133U
- Authority
- JP
- Japan
- Prior art keywords
- shutter
- telephoto
- switched
- wide
- electrostrictive element
- 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
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Details Of Measuring And Other Instruments (AREA)
- Shutters For Cameras (AREA)
- Structure And Mechanism Of Cameras (AREA)
Description
第１図、第２図はそれぞれ本考案の一実施例を
示すプログラム線図、及び回路図である。第３図
は従来のプログラム線図である。
１……バイモルフ、２……電源、３……ＤＣ―
ＤＣコンバータ、４……コンパレータ、５……オ
ア回路、６……アンプ、Ｑ１〜Ｑ７……トランジ
スタ、Ｓ１〜Ｓ３……スイツチ、Ｒ１・Ｒｔ・Ｒ
ｗ……抵抗、Ｐ１〜Ｐ６……点、Ｖｃ……電源電
圧、ＶＨ……高電圧、ＳＰＤ……受光素子、Ｃ１
……コンデンサ。
FIGS. 1 and 2 are a program diagram and a circuit diagram, respectively, showing an embodiment of the present invention. FIG. 3 is a conventional program diagram. 1... Bimorph, 2... Power supply, 3... DC-
DC converter, 4...Comparator, 5...OR circuit, 6...Amplifier, Q1-Q7...Transistor, S1-S3...Switch, R1/Rt/R
w...Resistance, P1 to P6...Points, Vc...Power supply voltage, VH...High voltage, SPD...Photodetector, C1
...Capacitor.
Claims (1)
用するシヤツタにおいて、テレ、ワイド切換え時
に前記バイモルフ電歪素子に供給する駆動電流の
大きさを切換えるようにして、シヤツタの立上が
り特性をテレ、ワイドで切換えるようにした２焦
点カメラの可変プログラムシヤツタ。 In a shutter that uses a bimorph electrostrictive element as a shutter drive source, the magnitude of the drive current supplied to the bimorph electrostrictive element is switched when switching between telephoto and wide, so that the rise characteristics of the shutter can be switched between telephoto and wide. Variable program shutter for bifocal camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13427186U JPH0648495Y2 (en) | 1986-09-03 | 1986-09-03 | Variable program shutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13427186U JPH0648495Y2 (en) | 1986-09-03 | 1986-09-03 | Variable program shutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6341133U true JPS6341133U (en) | 1988-03-17 |
| JPH0648495Y2 JPH0648495Y2 (en) | 1994-12-12 |
Family
ID=31035360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13427186U Expired - Lifetime JPH0648495Y2 (en) | 1986-09-03 | 1986-09-03 | Variable program shutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648495Y2 (en) |
-
1986
- 1986-09-03 JP JP13427186U patent/JPH0648495Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648495Y2 (en) | 1994-12-12 |
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