| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrier driving apparatus that enables to suppress an increase in the number of parts constituting a lens barrier driving mechanism to the utmost and avoid light leakage from a penetrating portion, ghosts and the like which may degrade the optical performance, and to provide a lens barrel and an image pickup apparatus. SOLUTION: The lens barrel includes a first group lens barrel, the lens barrier 12, the lens barrier 13, a barrier driving lever 14, a barrier driving lever 15, a second group lens barrel 20, a transmission member 21 and a lens barrel base plate 30. The lens barrel base plate 30 includes a tapered cam portion 30a. The transmission member 21 includes a rib portion 21b penetrating the penetrating portion formed in the second group lens barrel 20 and a light shielding portion 21c for shielding at least a part of the penetrating portion. The penetrating portion of the second group lens barrel 20 is shielded from the light by the light shielding portion 21c of the transmission member 21 and the tapered cam portion 30a of the lens barrel base plate 30 in such a situation that the rib portion 21b of the transmission member 21 does not come into contact with the tapered cam portion 30a of the lens barrel base plate 30 (in a situation where photographing can be carried out by the image pickup apparatus). COPYRIGHT: (C)2007,JPO&INPIT
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