| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lens barrel which attains wide angle and small size. <P>SOLUTION: 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 first driving unit 50, a shutter unit 29, and an aperture unit 22. The first lens group G1 has an overall negative refractive power, and includes a prism PR. The second support frame 20 is driven along a second optical axis by the first driving unit 50. The shutter unit 29 has a shutter mechanism 29a, a shutter drive motor 27 configured to drive the shutter mechanism 29a, a neutral density filter, and a filter drive motor 28 configured to drive the neutral density filter. The shutter drive motor 27 and the filter drive motor 28 are disposed flanking the second optical axis A2 when viewed in a direction along the second optical axis. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
