| 摘要 |
PURPOSE:To reduce the size of a cam member for moving out a lens barrel through a bar, by setting the center of rotation of the cam member coincident with the center axis of the bar. CONSTITUTION:When the cam member 7a rotates, the lens barrel 2 which is disallowed to rotate by the bar through an infinite adjusting screw 4 abutting on the cam member is moved in an optical axis direction through the bar 3, moving out the lens barrel 2 through the bar. When the center of rotation of the cam 7a is coincident with the center axis of the bar 3, the size of the cam member is reduced and narrow space is utilized effectively, obtaining a small-sized camera. |
