| 摘要 |
<p>A lens barrel which can be produced at reduced production costs. The lens barrel (3) has a first lens group (G1), a second lens group (G2), a third lens group (G3), a first support frame (10) for supporting the first lens group (G1), a second support frame (20) for supporting the second lens group (G2), a third support frame (30) for supporting the third lens group (G3), a first drive unit (50), a second drive unit (60), and a shutter unit (29) fixed to the second support frame (20). The first lens group (G1) as a whole has a negative refractive power and includes a prism (PR). The second support frame (20) is driven along a second optical axis (A2) by the first drive unit (50). The third support frame (30) is driven along the second optical axis (A2) by the second drive unit (60).</p> |
