| 摘要 |
<p>This lens barrel (100) is provided with a stationary frame (30), a cam frame (50) (an example of a mobile frame), and a drive mechanism (70) that rotationally drives the cam frame (50) with respect to the stationary frame (30). The stationary frame (30) has a plurality of guide protrusions (31) that guide the cam frame (50) in the direction of the rotational axis. The drive mechanism (70) has a plurality of drive gears (72). The cam frame (50) has a driven gear unit (52) and a guide groove (51). In the state of use, at least one of the drive gears (72) among the plurality of drive gears (72) is configured in a manner so as to engage the driven gear unit (52).</p> |
