| 主权项 |
1. A lens barrel, comprising:
a first frame including at least one first cam groove and at least one second cam groove, the at least one the first cam groove provided along a cylindrical face and including a first straight portion, the first straight portion formed in a first direction in a state in which the cylindrical face is spread out in a plane, the at least one second cam groove provided along the cylindrical face, formed in a second direction that intersects the first direction in a state in which the cylindrical face is spread out in a plane, and including a second straight portion that intersects the first straight portion; a second frame including at least one first cam protrusion, the at least one first cam protrusion configured to engage with the first cam groove; and a third frame including at least one second cam protrusion, the at least one second cam protrusion configured to engage with the second cam groove, the depth of the first cam groove is substantially the same as the depth of the second cam groove, the length of the first cam protrusion in the first direction is greater than the length of the second straight portion in the first direction, and the length of the second cam protrusion in the second direction is greater than the length of the first straight portion in the second direction. |
