| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lens barrel which increases posture accuracy of lens groups and has a compact size. <P>SOLUTION: In a lens barrel, a lens frame includes a first bearing part having a first insertion hole for inserting a guide shaft, and a second bearing part having a second insertion hole for inserting the guide shaft. The guide shaft comes into contact with the inner peripheral surface of the first insertion hole at a first contact point and a second contact point and with the inner peripheral surface of the second insertion hole at a third contact point and a fourth contact point. The first contact point and the second contact point are positioned on the opposite side of the third contact point and the fourth contact point relative to a parallel surface passing through the guide axial center of the guide shaft and parallel with the optical axis direction. <P>COPYRIGHT: (C)2012,JPO&INPIT |
