| 摘要 |
PURPOSE:To enhance the reduction of the number of parts and the drastic reduction of assembling stages because of a simple structure by turning both a lens driving member and a shutter driving member with electromagnetic force. CONSTITUTION:A permanent magnet 2b and 1st and 2nd coils 3a and 5a which are in the magnetic field of the permanent magnet 2b and respectively turn the lens driving member 3 and the shutter driving member 5 with the electromagnetic action with the permanent magnet 2b at the time of applying a current are provided on any one of a fixed member in the peripheral part of a lens barrel, the lens driving member 3 and the shutter driving member 5 and on other of them respectively. Moreover, a lens position control means for controlling the application of the current to the 1st coil 3a according to an object distance signal by a range-finder and a shutter control means for controlling the application of the current to the 2nd coil 5a according to an object luminance signal by a photometry device are provided too. Then, a spring charge at the time of photographing is not necessitated and a governor mechanism and a latch mechanism are made unnecessary. Thus, a precise and inexpensive device having small number of parts, whose assembly is simple, can be obtained. |
