| 摘要 |
<P>PROBLEM TO BE SOLVED: To configure a lens barrel with a simple configuration and to easily adjust a focus position. <P>SOLUTION: A lens barrel includes a fixed barrel 108 movably holding a first group lens holding barrel 110 and a second group lens holding barrel 112 in an optical axis direction and a rotation barrel (an outer barrel 102, a middle barrel 104, and an inner barrel 106) provided to be rotatable with respect to the fixed barrel 108 and moving the first group lens holding barrel 110 and the second group lens holding barrel 112 in the optical axis direction according to the rotation. The rotation barrel includes the middle barrel 104 moving the first group lens holding barrel 110 in the optical axis direction, the outer barrel 102 and the inner barrel 106 moving the second group lens holding barrel 112 in the optical axis direction, and an adjustment part adjusting the angular positions around an optical axis of the outer barrel 102 and the inner barrel 106 with respect to the middle barrel 104. <P>COPYRIGHT: (C)2013,JPO&INPIT |
