PHOTOGRAPHIC DEVICE

摘要

PURPOSE:To prevent a lens holding frame from projecting from a fixed barrel and to improve the reliability by providing a cam part even at a cabinet side opposite a cam part provided to a lens frame at a constant interval. CONSTITUTION:The holding frame 11 for a focusing lens is rotated to move the cam 11a provided to the frame 11 in an optical-axis direction under the guidance of the cam 14a provided to the fixed barrel 14. Further, the cam 11a is pressed in the optical-axis direction by a pressure spring 16 fitted to the barrel 14 to control the frame 11 so that the frame 11 does not project from the barrel 14. When an impact exceeding the elastic force of a spring 16 is applied, the cam 11b provided to the frame 11 contacts the cam part 19 provided to the cabinet 18 to prevent the frame 11 from projecting from the barrel 14.