MALFUNCTION DETECTOR FOR CAMERA,申请号JP19870063161-传众专利搜索

MALFUNCTION DETECTOR FOR CAMERA

申请公布号：JPS63229444(A)

申请号：JP19870063161

申请日期：1987.03.18

申请公布日期：1988.09.26

申请人：

NIKON CORP

发明人：MEGURO HIROSHI;OTANI TADASHI

分类号：G03B17/00

主分类号：G03B17/00

摘要：PURPOSE:To allow a photographer to know that a camera is defective and to prevent further defective photographing by providing a trigger member and an inhibiting circuit which inhibits the camera from entering next shutter releasing operation in a specified state. CONSTITUTION:A trigger switch abnormality detecting circuit 6 keeps on outputting an H signal to an AND circuit 7 when a trigger switch SW 1 changes within a specified time, but detects abnormality unless the signal is outputted within the specified time and outputs an L signal to the AND circuit 7. When the L signal is inputted to the AND circuit 7, namely, when the abnormality of the trigger switch SW 1 and a lens stop signal is detected, the output signal of the AND circuit 7 falls to an L level, an exposure controller 2 finishes shutter control, and the output signal of an AND circuit 8 is held at L continuously and a motor is not controlled and the photographer is warned.