| 摘要 |
PURPOSE:To permit stable movement of a lens barrel by using one end of a guide shaft fixed to a main structural body as a reference for positioning and executing positioning of another one guide shaft based on said end in order to position two pieces of the guide shafts to each other. CONSTITUTION:A screw hole 1c and positioning hole 1d are formed to the projecting end face of a projecting part 1b which projects in the optical axis direction form the structural body 1. An aperture 5a for passing light is formed in the middle of a guide shaft supporting member 5 to be commonly used for positioning of the guide shaft 4. A positioning hole 5b to be fitted to one end of the guide shaft 2 and a blind hole 5c to be commonly used for positioning and stopping of the guide shaft 4 are formed; in addition, a positioning in 5d corresponding to the positioning hole 1d formed at the end of the projecting part 1b of the structural body 1 is formed. The guide shaft supporting member 5 is positioned by the guide shaft 2 coupled integrally to the structural body 1 and the positioning hole 1d formed to the structural body 1 in such a manner and, therefore, the guide shaft 4 is positioned by using the guide shaft 2 as a reference. The stable movement of the lens barrel is thus enabled.
|
