BARRIER DEVICE AND CAMERA

摘要: PROBLEM TO BE SOLVED: To transmit driving force with good transmission efficiency and to drive a barrier without making the constitution of lens barrel large by transmitting rotational rotating means, which rotates move means barrier. SOLUTION: The projection 2-c cam ring 2 rear 7-a lever 7 are extended in optical axis direction, so that both members abut on necessary relative position even when they relatively direction. When gear 3 is rotated counterclockwise, helicoid-coupled 4 moved forward In such case, integrally counterclockwise blade 10 opened opening spring 9, then interlocked clockwise. Thus, driven be opened/closed simultaneously collapsing action 4.