| 摘要 |
PURPOSE:To prevent generation of a looseness in the optical axis direction of a rod by forming a hole in at least one of a holding plate and an end plate side along the optical axis, placing an absorbing member of a dimensional error in this hole, and fixing the rod through this absorbing member. CONSTITUTION:An end plate 6 is placed on one end of a fixed cylinder 4, and also a holding plate 5 is placed on the other end. In this case, a hole is formed in at least one of the holding plate 5 and the end plate 6 side, and in this hole, for instance, a coil spring is placed as an absorbing member of a dimensional error, and a rod is fixed through this absorbing member 15. According to such a constitution, the rod can be pressed along the optical axis, therefore, even if a dimensional error is generated between the fixed cylinder and the rod, no looseness is generated in the optical axis direction, and this lens barrel is suitable for a mass production. |
