| 摘要 |
PURPOSE:To make the quantitative detection of the camera shake possible by detecting the electromotive force of a group of movable conductors provided in magnetic space where the magnetic-flux density determined by a magnet and yokes varies linearly with variation in position. CONSTITUTION:Magnet 1 and two yokes 2a and 2b constitute a magnetic circuit and magnetic detecting element 3 composed of a group of conductors is held in this magnetic field by springs 4, 5, 7 and 8. When direction 6 is set equal to the moving direction of a camera with its shutter button pushed, the relative position of magnetic detecting element 3 in the magnetic space changes according to the movement of the camera body. Therefore, since the conductors, magnetic detecting element 3, generate electromotive force crossing the magnetic field, it can be led out from conductor 31 and a magnetic field varying linearly in magnetic flux density is used to provide the quantitative detection of the camera shake. |
