| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lens barrel including a light shielding member which can be moved in an optical axis direction, in conjunction with the collapse and extension of the lens barrel, with a simple configuration. <P>SOLUTION: An imaging apparatus includes the lens barrel including a fixed barrel, a cam barrel, a linearly advancing barrel 501, and a moving mask 502. The cam barrel is cam fitted to the fixed barrel and extended while being rotated to an object side. The linearly advancing barrel 501 is fitted to and held by the cam barrel freely rotatably relative to the cam barrel and linearly extended in a direction along the optical axis of an imaging optical system, according to the extending operation of the cam barrel, in such a manner that the rotation of the linearly advancing barrel 501 is regulated by the fixed barrel. The moving mask 502 is fitted to the inner surface of the linearly advancing barrel 501, to reduce the opening of the linearly advancing barrel 501 and moved in the direction along the optical axis together with the linearly advancing barrel 501. <P>COPYRIGHT: (C)2013,JPO&INPIT |
