| 摘要 |
PURPOSE:To make the attaching and detaching of an interchangeable optical apparatus easy, and to prevent the damage of the engaging and disengaging part for driving power of an automatic focusing device and the members on the other side by constituting said apparatus in such a way that, while the body of an optical apparatus and the interchangeable optical apparatus are held separated, the engaging and disengaging part retreat automatically to a retreat position. CONSTITUTION:An engaging and disengaging part 15 which can be disengaged with an engaging and disengaging part 5 transmittably of driving power is formed to the shaft end of a driven shaft 14 which is made movable forward and backward in the axial direction toward a driving shaft 4 and is made rotatable. Said engaging and disengaging part is constituted so as to be made movable forward and backward to and form the engaging position from and to the inner side of a window 13. To remove an interchangeable lens 10 from a camera body 1, the user pushes an unlocking button which is not shown, then a mount lock pin 8 retreats from a seat plate face 6 of the body 1. Then, an operating lever 24 is turned counterclockwise by the energizing force of a spring 28, and a part 25 forked at the forward end moves the driven shaft 14 leftward against the spring 14, thereby moving the part 15 in the retreat position and retreating the same from a seat plate face 11. |
