| 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 third support frame 30 for supporting the third lens group G3, a first drive unit 50, and a second drive unit 60. 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 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. Part of a first movement region M21 in which the second support frame 20 moves overlaps a second movement region M31 in which the third support frame 30 moves. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
