JPS61155826U

JPS61155826U -

Info

Publication number: JPS61155826U
Application number: JP3779485U
Authority: JP
Priority date: 1985-03-15
Filing date: 1985-03-15
Publication date: 1986-09-27

Description

[Brief explanation of the drawing]

第１図乃至第４図は従来技術の背景及び問題点
を説明するための説明図、第５図乃至第７図は本
考案に係わるシヤツタ装置を説明するための説明
図である。尚、第５図はシヤツタ装置のシヤツタ
終了状態にあるフイルム側より見た要部平面図、
第６図は第５図を撮影レンズ側より見た背面図、
第７図はシヤツタ装置の制御回路図である。図中、Ｂ……レリーズレバー、Ｄ……絞り設定
部材（第２の部材）、Ｇ……電磁石（係止手段）
、Ｍ……受光素子、Ｒ……遮光部材（第１の部材
）、Ｃｒ……コンデンサー（遅延回路）。 FIGS. 1 to 4 are explanatory diagrams for explaining the background and problems of the prior art, and FIGS. 5 to 7 are explanatory diagrams for explaining the shutter device according to the present invention. In addition, FIG. 5 is a plan view of the main parts of the shutter device as seen from the film side when the shutter is finished.
Figure 6 is a rear view of Figure 5 seen from the photographing lens side.
FIG. 7 is a control circuit diagram of the shutter device. In the figure, B...Release lever, D...Aperture setting member (second member), G...Electromagnet (locking means)
, M... Light receiving element, R... Light shielding member (first member), Cr... Capacitor (delay circuit).

Claims

[Scope of utility model registration request]

The first one is activated by the release operation and gradually changes the exposed area of the light receiving element that detects the brightness of the subject.
a control circuit that operates a locking means when the output of the light receiving element reaches a preset value;
and a second member that follows the first member and is locked by the locking means to regulate the opening amount of the shutter, the timing of activation of the locking means being electrically delayed. A shutter device characterized in that the control circuit is provided with a delay circuit for causing the shutter to move.