JPS5843070U - Television camera lens aperture control circuit - Google Patents
Television camera lens aperture control circuitInfo
- Publication number
- JPS5843070U JPS5843070U JP1981137122U JP13712281U JPS5843070U JP S5843070 U JPS5843070 U JP S5843070U JP 1981137122 U JP1981137122 U JP 1981137122U JP 13712281 U JP13712281 U JP 13712281U JP S5843070 U JPS5843070 U JP S5843070U
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- television camera
- lens aperture
- circuit
- aperture control
- 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
- 238000001514 detection method Methods 0.000 claims 3
- 230000000630 rising effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Exposure Control For Cameras (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来のレンズ絞り制御回路を蔵回略図、第２図
は本考案によるテレビジョンカメラのレンーズ絞り制御
回路の一実施例を示す回路図、第３図は第第２図の動作
を説明する波形図、第４図は本考案による他の実施例を
示す回路図、第５図は第４図の一動作を説明する波形図
である。
２・・・・・・撮像管、Ｓｌ・・・・・・アナログスイ
ッチ、ＩＣｉ・・・・・・差動増幅器、Ｍｌ・・・・・
・モーター。Fig. 1 is a schematic diagram showing a conventional lens aperture control circuit, Fig. 2 is a circuit diagram showing an embodiment of the lens aperture control circuit of a television camera according to the present invention, and Fig. 3 shows the operation of Fig. 2. FIG. 4 is a circuit diagram showing another embodiment of the present invention, and FIG. 5 is a waveform diagram explaining one operation of FIG. 4. 2...Image tube, Sl...analog switch, ICi...differential amplifier, Ml...
·motor.
Claims (3)
ズ絞りを制御するテレビジョンカメラのレンズ絞り制御
回路において、 前記撮像管の立上り動作を検出する回路と、この検出回
路出力に応じて所定電位によってレンズ絞り動作を行な
う手段とを具備することを特徴とするテレビジョンカメ
ラのレンズ絞り制御回路。(1) In a lens aperture control circuit of a television camera that controls a lens aperture according to the video output level obtained from the image pickup tube, a circuit for detecting the rising operation of the image pickup tube and a predetermined potential depending on the output of this detection circuit are provided. 1. A lens diaphragm control circuit for a television camera, comprising means for performing a lens diaphragm operation.
出する回路としたことを特徴とする実用新案登録請求の
範囲第１項記載のテレビジョンカメラのレンズ絞り制御
回路。(2) A lens aperture control circuit for a television camera according to claim 1, wherein the detection circuit is a circuit for detecting a rise in cathode potential of an image pickup tube.
出する回路としたことを特徴とする実用新案登録請求の
範囲第１項記載のテレビジョンカメラのレンズ絞り制御
回路。(3) The lens aperture control circuit for a television camera according to claim 1, wherein the detection circuit is a circuit for detecting a rising edge of a video output signal from an image pickup tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981137122U JPS5843070U (en) | 1981-09-17 | 1981-09-17 | Television camera lens aperture control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1981137122U JPS5843070U (en) | 1981-09-17 | 1981-09-17 | Television camera lens aperture control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5843070U true JPS5843070U (en) | 1983-03-23 |
Family
ID=29930415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1981137122U Pending JPS5843070U (en) | 1981-09-17 | 1981-09-17 | Television camera lens aperture control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843070U (en) |
-
1981
- 1981-09-17 JP JP1981137122U patent/JPS5843070U/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5843070U (en) | Television camera lens aperture control circuit | |
| JPS6162467U (en) | ||
| JPS5819569U (en) | Synchronous signal stabilizer | |
| JPS617178U (en) | White balance correction device for television cameras | |
| JPS59180561U (en) | Image distortion correction circuit | |
| JPS5986770U (en) | tv jiyoung camera | |
| JPS5972071U (en) | Volume tracking variable zoom television camera | |
| JPS5986769U (en) | tv camera | |
| JPS61146071U (en) | ||
| JPS5984961U (en) | Video camera | |
| JPS6035680U (en) | Backlight correction device | |
| JPS5823461U (en) | tv jiyoung camera | |
| JPS60155277U (en) | color television camera | |
| JPS5891182U (en) | Visitor detection device | |
| JPS5950162U (en) | CRT drive circuit | |
| JPS5850563U (en) | video amplification circuit | |
| JPS60158807U (en) | Digital subtraction device | |
| JPS5882080U (en) | signal detection device | |
| JPS59114679U (en) | video environment monitoring equipment | |
| JPS6118685U (en) | Video signal amplification circuit | |
| JPS60108075U (en) | TV image projection device | |
| JPS60142570U (en) | television receiver | |
| JPS5848173U (en) | television receiver | |
| JPH0260374U (en) | ||
| JPS6144968U (en) | video camera equipment |