| 摘要 |
Provided is a lens barrel comprising a cylinder that is provided on a base and that extends in a direction of the axis of the cylinder; a guide axle that slides in the direction of the axis of the cylinder along an inner peripheral surface of the cylinder; a first holding component that holds a first lens and is fixed to the guide axle; and a second holding component that holds a second lens, which is different from the first lens, and slides in the direction of the axis of the cylinder along an outer peripheral surface of the cylinder.
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