JPS60140041U

JPS60140041U - camera electric drive

Info

Publication number: JPS60140041U
Application number: JP1984193228U
Authority: JP
Inventors: 渡辺　朔次
Original assignee: 株式会社ニコン
Priority date: 1984-12-20
Filing date: 1984-12-20
Publication date: 1985-09-17

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

[Brief explanation of the drawing]

第１図は自動露出制御の際の本考案になる制御回路の接
続を示す図であり、第２図はシャッタ押釦の動作を示す
図であり、そして第３図は手動露′出制御の際の本考案
になる制御回路の接続を示す図である。　　　　　　　
　　　− 〔主要部分の符号の説明〕第１の電源・・・Ｅ１自動露
出制御回路・・・１、シャッタ押釦・・・２、第１スイ
ッチ手段・・・ｓｗｌ、計数回路・・・Ｃ＝　Ｒ３、検
出出力回路・・・ｃｏｍｐ、第２スイッチ手段・・・Ｓ
Ｗ２、電動駆動手段・・・■。Fig. 1 is a diagram showing the connection of the control circuit according to the present invention during automatic exposure control, Fig. 2 is a diagram showing the operation of the shutter push button, and Fig. 3 is a diagram showing the operation of the shutter push button during manual exposure control. FIG. 3 is a diagram showing connections of a control circuit according to the present invention.
- [Explanation of symbols of main parts] First power supply...E1 Automatic exposure control circuit...1, Shutter push button...2, First switch means...swl, Counting circuit...C=R3 , detection output circuit...comp, second switch means...S
W2, electric drive means...■.

Claims

[Scope of utility model registration request]

In an electric drive device used in a camera, the electric drive device includes a first power source and an automatic exposure control circuit that is supplied with power from the first power source and is configured to take a picture with an appropriate exposure depending on the brightness of a subject at the time of shutter release. a first switch which is actuated by the first depression of the push button and allows full power supply from the first power supply to the automatic exposure control circuit; and a time counting is started by actuation of the first switch means. a counting circuit;
The automatic exposure control circuit operates when power is not supplied from the first power source, detects from the output of the counting circuit that a predetermined time required for the automatic exposure control circuit to reach a stable state has elapsed, issues a stability signal, and stabilizes thereafter. a detection output circuit that continues to output a signal and is set to have an output state in which the output when sufficient power is not supplied for operation from the first power source is equal to the stable signal output; and two of the shutter push buttons. a first switch means that continues to output a photographing signal as long as the step is pressed; a second power source different from the first power source; and a detection output circuit that is supplied with power from the second power source. As long as a stability signal is output from the second switch means and a photographing signal is output from the second switch means, an electric drive device for a camera is provided, comprising: - an electric means for sequentially repeating a reshaft release and a winding operation. .