| 摘要 |
<p>Provided is a lens barrel which can be made compact. The lens barrel (20) includes a fixed frame (100) which is cylindrical, a first straight movement frame (110) which is cylindrical, a first rotational frame (210) which is cylindrical, and a second straight movement frame (120) which is cylindrical. In the first rotational frame (210), a portion of a cam groove (b2) and a portion of a bayonet projection (E1) are located between two cam followers (B1) from among three cam followers (B1) in the circumferential direction around the shaft center (P) of the first rotational frame (210).</p> |
