JPH0344975U - - Google Patents
Info
- Publication number
- JPH0344975U JPH0344975U JP1989104856U JP10485689U JPH0344975U JP H0344975 U JPH0344975 U JP H0344975U JP 1989104856 U JP1989104856 U JP 1989104856U JP 10485689 U JP10485689 U JP 10485689U JP H0344975 U JPH0344975 U JP H0344975U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- iris
- oscillates
- braking
- lens
- 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
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例の回路図である。
１……輝度信号入力部、２……ドライバーアン
プ、３……アイリスモータ、４……コンパレータ
。
FIG. 1 is a circuit diagram of an embodiment of the present invention. 1... Brightness signal input section, 2... Driver amplifier, 3... Iris motor, 4... Comparator.
Claims (1)
発振する領域まで絞られた事を検出し、制御回路
の制動量を変ることにより発振を防止する事を特
徴とするアイリス制御回路。 An iris control circuit for a lens, which detects when the iris is narrowed down to a region where it oscillates, and prevents oscillation by changing the amount of braking in the control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989104856U JPH0344975U (en) | 1989-09-08 | 1989-09-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989104856U JPH0344975U (en) | 1989-09-08 | 1989-09-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0344975U true JPH0344975U (en) | 1991-04-25 |
Family
ID=31653636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989104856U Pending JPH0344975U (en) | 1989-09-08 | 1989-09-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0344975U (en) |
-
1989
- 1989-09-08 JP JP1989104856U patent/JPH0344975U/ja active Pending