JPS6039034U - electromagnetic aperture camera - Google Patents
electromagnetic aperture cameraInfo
- Publication number
- JPS6039034U JPS6039034U JP10885384U JP10885384U JPS6039034U JP S6039034 U JPS6039034 U JP S6039034U JP 10885384 U JP10885384 U JP 10885384U JP 10885384 U JP10885384 U JP 10885384U JP S6039034 U JPS6039034 U JP S6039034U
- Authority
- JP
- Japan
- Prior art keywords
- input terminal
- output
- circuit
- comparator
- servo amplifier
- 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
Landscapes
- Exposure Control For Cameras (AREA)
- Details Of Cameras Including Film Mechanisms (AREA)
- Cameras In General (AREA)
- Diaphragms For Cameras (AREA)
- Shutters 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図は本考案の一実施例における電磁絞機構の一例を
示す斜視図、第２図は、本考案の一実施例を示す一眼レ
フレックスカメラの内部機構の斜視図、第３図は、上記
一実施例における復動動用レバーの一部を示す斜視図、
第４図は、上記第１．２図のカメラの電気回路の一例を
示す回路図。第５図は、撮影モード切換ノブによって切
り換えられるスイッチ群ＳＷ４〜５ＷＩＩの切換状態を
表にして示す図、第６〜９図は、各撮影モードにおける
電気回路の作動状態をそれぞれ示す電気回路図である。
Ｐｉ、Ｐ２・・・第１の受光素子、Ｐ３．Ｐ４・・・第
２図の受光素子、Ｆ・・・フィルム、１７・・・シャッ
ター速度設定器環、２５・・・シャッター先幕、２９・
・・シャッター後幕、７１・・・電源回路、７２・・・
先幕走行制御回路、７３・・・電磁絞機構駆動回路、７
４・・・後幕走行制御回路、７５・・・シャッター秒時
手動設定回路、７６・・・シャッター秒時自動決定回路
、７７・・・絞自動決定回路、７８・・・負帰還回路。FIG. 1 is a perspective view showing an example of an electromagnetic diaphragm mechanism in an embodiment of the present invention, FIG. 2 is a perspective view of an internal mechanism of a single-lens reflex camera showing an embodiment of the present invention, and FIG. A perspective view showing a part of the double-acting lever in the above embodiment,
FIG. 4 is a circuit diagram showing an example of the electric circuit of the camera shown in FIG. 1.2. Fig. 5 is a table showing the switching states of switch groups SW4 to SW5WII which are switched by the shooting mode switching knob, and Figs. 6 to 9 are electrical circuit diagrams showing the operating states of the electric circuits in each shooting mode. be. Pi, P2...first light receiving element, P3. P4... Light receiving element in Figure 2, F... Film, 17... Shutter speed setting ring, 25... Shutter front curtain, 29.
...Shutter rear curtain, 71...Power supply circuit, 72...
Leading curtain travel control circuit, 73... Electromagnetic diaphragm mechanism drive circuit, 7
4... Rear curtain travel control circuit, 75... Shutter time manual setting circuit, 76... Shutter time automatic determination circuit, 77... Aperture automatic determination circuit, 78... Negative feedback circuit.
Claims (1)
、他方の入力端に基準電圧を印加されたサーボアンプと
、 −レンズの鏡筒内に配設されていて、上記サーボアンプ
の出力により駆動される電磁絞機構と、非反転入力端を
上記サーボアンプの入力端に接、 続されていて、
反転入力端に基準電圧の印加された第１あコンパレータ
ーと、 反転入力端を上記サーボアンプの入力端に接続されてい
て、非反転入力端に基準電圧の印加された第２のコンパ
レーターと、 上記第１のコンパレーターの出力と第２のコンパレータ
ーの出力とが入力されるアンド回路と、上記アンド回路
の出力を受けて作動するシャッター先幕走行用電磁石と
、 を具備したことを特徴とする電磁絞り式カメラ。[Claims for Utility Model Registration] A servo amplifier having an output corresponding to the operating state of the diaphragm inputted to one input terminal and a reference voltage applied to the other input terminal; an electromagnetic diaphragm mechanism driven by the output of the servo amplifier, and a non-inverting input end connected to the input end of the servo amplifier;
A first comparator has a reference voltage applied to its inverting input terminal, and a second comparator has its inverting input terminal connected to the input terminal of the servo amplifier and has a reference voltage applied to its non-inverting input terminal. , an AND circuit into which the output of the first comparator and the output of the second comparator are input, and an electromagnet for running the shutter front curtain that operates in response to the output of the AND circuit. An electromagnetic aperture camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10885384U JPS6039034U (en) | 1984-07-18 | 1984-07-18 | electromagnetic aperture camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10885384U JPS6039034U (en) | 1984-07-18 | 1984-07-18 | electromagnetic aperture camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6039034U true JPS6039034U (en) | 1985-03-18 |
Family
ID=30253800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10885384U Pending JPS6039034U (en) | 1984-07-18 | 1984-07-18 | electromagnetic aperture camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6039034U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5099731A (en) * | 1973-12-31 | 1975-08-07 |
-
1984
- 1984-07-18 JP JP10885384U patent/JPS6039034U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5099731A (en) * | 1973-12-31 | 1975-08-07 |
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