| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens barrel capable of securing the driving power of an actuator even when output from a fuel cell is low. SOLUTION: The lens barrel 200 detachably attached to a body 100 is equipped with: a member to be driven L; an actuator part 230 driving the member to be driven L; a lens-side power supply part 240 having a fuel cell part 242 generating power to be supplied to the actuator part 230; a gas supply part 270 driven to be interlocked with the member to be driven L by the actuator part 230 and supplying oxygen containing gas to the fuel cell part 242; and an auxiliary power supply part 260 supplying power supplied from the body 100 side to the actuator part 230 in accordance with output from the lens-side power supply part 240. COPYRIGHT: (C)2007,JPO&INPIT
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