| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lens barrel provided with an eccentricity adjusting mechanism which can reduce assembling man-hour and cost thereof by reduction of the number of components. <P>SOLUTION: In the lens barrel, in the an outer lens frame 50 for integrally holding respective lenses G1 to G6 of a rear-side master lens group 26B, a lens G2'is held and stored in an inner lens frame 90, which is positionally adjusted in a direction perpendicular to an optical axis for eccentricity adjustment, according to a screwing amount of a set screw 100 engaged in the radial direction. As for the inner lens frame 90 and the lens G2' held by the inner lens frame, the rear side thereof is engaged by an engaging portion 60 projectedly formed in the outer lens frame 50, the front side thereof is engaged by a leaf spring 66 mounted in the outer lens frame 50, and the inner lens frame and the lens are backwardly pressed by the leaf spring 66. The leaf spring 66 is inserted from a front-side opening of the outer lens frame 50, and can be easily mounted in a groove 72 formed on the inner peripheral surface of the outer lens frame 50, similarly to the inner lens frame 90. <P>COPYRIGHT: (C)2012,JPO&INPIT |
