Adapter ring capable of driving external lens aperture deflector rod

An adapter ring capable of driving an external lens aperture deflector rod comprises an adapter ring body, a circuit board, a stepping motor speed reduction device, a driving assembly, a light transmission inner cylinder, a lens connecting ring and a camera connecting ring. The device is provided with a reduction gear transmission device driven by a stepping motor, a reduction gear can be driven to be meshed with a driving rack to move conveniently and smoothly, aperture control is more stable and accurate during photographing, and the problem of poor film and television photo and image exposure caused by other step losing and idling is effectively avoided; the device can realize an automatically controlled adapter ring, not only can drive an external aperture deflector rod lens to realize automatic aperture and automatic focusing, but also can adapt to an electromagnetic aperture lens on the market and also can realize automatic focusing, and adapter lenses are richer and more diversified. 一种可驱动外置镜头光圈拨杆的转接环，