Lens barrel

摘要

A lens barrel includes a first lens, a second lens, a first frame body, a second frame body, and a retracting lens frame. The retracting lens frame is configured to move so that a position of the second optical axis of the second lens changes from a position on the first optical axis of the first lens to a position that is outside the first optical axis, during the transition period between the imaging enabled state and the housed state. A contact portion is formed on the inner peripheral part of the first frame body. A protrusion of the retracting lens frame is configured to engage with and guided by the contact portion during movement of the retracting lens frame. The thickness of a region constituting the side wall of the contact portion is increased over the thickness of the other region toward the inside of the cylindrical part.

主权项

1. A lens barrel, comprising:
a first lens including a first optical axis; a second lens including a second optical axis; a first frame body; a frame group including a main frame, a support frame, and a retracting lens frame, the support frame configured to be supported by the main frame movably in a plane that is perpendicular to the first optical axis, the retracting lens frame configured to support the second lens and be supported by the support frame, and configured to move with respect to the first frame body in a first optical axis direction; and a retraction shaft configured to be substantially parallel to the first optical axis and rotatably support the retracting lens frame with respect to the support frame; wherein a contact portion is formed in an inner peripheral part of the first frame body, the contact portion including at least one side wall, the retracting lens frame includes a protrusion, the protrusion configured to engage with the contact portion and be guided by the contact portion, the protrusion moves along the contact portion when the frame group moves with respect to the first frame body in the first optical axis direction, the retracting lens frame rotates around the retraction shaft by the movement of the protrusion during a transition period between an imaging enabled state and a housed state, a position of the second optical axis changes from a position on the first optical axis to a position outside the first optical axis during the transition period.