| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lens barrel capable of making the respective lens positions to a photographic optical axis viewed from the direction orthogonal to the photographic optical axis to be prescribed positions regardless of the proceeding/evading position. <P>SOLUTION: A lens barrel 10 includes: a lens group (12) composed of at least two or more lenses; a lens holding frame (22) for holding the lens groups; a holding barrel (23) for holding the lens holding frame (22) to be capable of proceeding/evading in the direction of the lens optical axis (OA) of the lens group; and a proceeding/evading mechanism for having the lens holding frame proceed to/evade from the holding barrel (23). The lens barrel is provided with three guide shafts (51, 52, 53) which are provided extending in the direction of the lens optical axis while surrounding the lens holding frame and fixed inside the holding barrel and energizing mechanisms (48, 54) held by the lens holding frame in between a reference guide shaft (51) and the lens holding frame with one of the respective guide shafts as the reference guide shaft for energizing the lens holding frame in the direction separating from the reference guide shaft and proceeding toward the remaining two guide shafts along a surface orthogonal to the lens optical axis direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
