| 摘要 |
An optical device includes an advancing/retracting member, an anti-shake frame supported by the advancing/retracting member, an insertable/removable frame which holds an image-stabilizing insertable/removable optical element and is rotatably supported by the anti-shake frame, a through-hole formed through the anti-shake frame to allow the insertable/removable frame to move between the insertion and removed positions, the through-hole including a circular arc groove about a rotational center of the insertable/removable frame and an outer end of the through-hole formed as an open end, and a bridge portion formed on the anti-shake frame to connect opposed inner walls of the through-hole at the outer end. The bridge portion is offset from the anti-shake frame and overlaps the clearance through-hole, as viewed in the optical axis direction. |
