| 摘要 |
<p>There is provided a zoom lens unit excellent in shock resistance and space-saving. Second, third lens holders (29,30) have shaft holes, into which shafts (27,28) are inserted, so as to be movable along the optical axis. Thanks to a first and second helical springs (31,32) fitted to the shafts (27,28), the second lens holder (29) is biased to a wall member (18) provided on the object side while the third lens holder (30) is biased to a wall member (19) provided on the image pickup element (12) side. When the power is turned off, the second lens holder (29) moves toward the object side and, upon contact with the wall member (18), is stopped, while the third lens holder (30) moves toward the image side and, upon contact with the wall member (19), is stopped.</p> |
