| 摘要 |
A lens barrel comprising a first member formed with a guide groove, and a second member having a main protrusion inserted into the guide groove and moving relative to the first member along the guide grove by moving the main protrusion within the guide groove. The lens barrel further comprises a displacement protrusion provided in a position, different from a position provided with the main protrusion, on the second member in a direction perpendicular to the guide groove. The displacement protrusion is inserted into the guide groove and contacts one side surface of the guide groove, thereby removing a play between the main protrusion and the guide groove.
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