| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a scheme for improving optical performance of a lens unit by removing both of tilt component and eccentric component of the lens unit retreating from an imaging optical axis when a lens barrel is collapsed. <P>SOLUTION: A lens barrel comprises: a base cylinder 48 rotatably supporting a lens unit 3 via a rotation shaft 50 between a photographic position and a retreat position; a tilt adjustment member 51 embedded to the base cylinder 48 in a photographic optical axis direction; and a holding cylinder 14 holding the base cylinder 48. One end of the rotation shaft is fitted and fixed to the base cylinder 48 while the other end of the rotation shaft is fitted and fixed to a fitting hole 51b of the tilt adjustment member 51. After the tilt adjustment member 51 is moved in a direction orthogonal to the photographic optical axis with respect to the base cylinder 48 and tilt component with respect to the photographic optical axis of the lens unit 3 is removed via the rotation shaft 50, the tilt adjustment member 51 is fixed to the base cylinder 48, and after the base cylinder 48 is moved in a direction orthogonal to the photographic optical axis with respect to the holding cylinder 14 and eccentric component with respect to the photographic optical axis of the lens unit 3 is removed, the base cylinder 48 is fixed to the holding cylinder 14. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
