| 摘要 |
PURPOSE:To realize a compact and light-weight constitution of a camera, by carrying out both the distance adjustment and the shutter control with one set of driving motor via a control rotor. CONSTITUTION:A motive gear 7 forming a control rotor is turned counterclockwise by a motor in response to the operation of a shutter release button, and the degree of rotation is controlled for the gear 7 via a detector 7c for the rotation of the gear 7 in accordance with the measured distance. As a result, a sector gear 34 is turned by a pin 36 of the gear 7, and the shift of the lens is controlled by a mirror frame 33 to perform the adjustment of distance. Thus the gear 7 is turned clockwise, and the shutter blade is opened via a trailing pin 6 of a shutter open/close lever 5 which is driven by a cam hole 7a of the gear 7. The photometry is carried out. Then the rotation of the gear 7 is stopped when a proper exposure is obtained. At the same time, an electromagnet 12 is put under the nonenergized state to close the shutter. In such way, both the distance and the shutter control can be carried out by just one set of driving notor to realize a compact and light-weight constitution of a camera. |
