| 摘要 |
A lens barrel includes a fixed tube, a moving tube arranged to move in the direction of an optical axis over the outer circumference of the fixed tube and to have a cutout part, and a band-like circuit board disposed around the optical axis on the outside of the fixed tube and having a part located inside the moving tube within an area corresponding to the cutout part and a part located outside the moving tube within an area other than the area corresponding to the cutout part.
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