| 摘要 |
PURPOSE:To design the constitution of an optical system or the like in an outer body with a considerable tolerance by obtaining the driving force of a sector of a lens shutter block through a driving force transmitting means attached to the camera body side. CONSTITUTION:The first motor 2 which is attached to the camera body and is driven in a prescribed direction in accordance with exposure information by a prescribed extent and the first transmission shaft 8 which is driven by the driving force of a sector driving ring, to which the driving force of the motor 2 is transmitted, and is attached to a barrel fixing plate 7 fixed to the camera body are provided. A pinion gear 26 which is connected to the transmission shaft 8 and is moved freely in the direction of the optical axis of the optical system in accordance with movement of constituting parts of the optical system and drives the sector of the lens shutter block which switches the optical path of the optical system, an inner cylinder 18 where the lens shutter block and constituting parts of the optical system are held, and a cam ring 14 which has the inner cylinder attached internally movably in the direction of the optical axis of the optical system and is the outer body attached to the camera body are provided. |
