Lens barrel and image capturing device

摘要

A lens barrel includes a fixed frame, a rotational frame, a first straight advance frame, a first lens retaining frame, and a first drive. The rotational frame engages with the fixed frame. The first straight advance frame engages with the rotational frame. The first lens retaining frame retains a first lens group and engage with the rotational frame. The first drive unit is attached to the first straight advance frame and drives rotationally the rotational frame around an optical axis. The first drive unit and the first straight advance frame move integrally with respect to the fixed frame in an optical axis direction according to a rotation of the rotational frame driven by the first drive unit. The first lens retaining frame further move with respect to the first straight advance frame in the optical axis direction, when the first straight advance frame moves such as above state.

主权项

1. A lens barrel comprising:
a fixed frame; a rotational frame configured to engage with the fixed frame; a first straight advance frame provided on an inner circumferential side of the rotational frame and configured to engage with the rotational frame; a first lens retaining frame configured to retain a first lens group and engage with the rotational frame, the first lens group including at least one lens; a first drive unit provided on an inner circumferential side of the first straight advance frame and configured to rotationally drive the rotational frame around an optical axis; and a second straight advance frame configured to be restricted from rotating by engaging with the fixed frame, engage with the rotational frame, and move in the optical axis direction while maintaining a predetermined distance from the rotational frame in the optical axis direction, wherein: the first drive unit and the first straight advance frame are configured to move integrally with respect to the fixed frame in an optical axis direction according to a rotation of the rotational frame driven by the first drive unit; the first lens retaining frame is configured to further move with respect to the first straight advance frame in the optical axis direction, when the first straight advance frame moves with respect to the fixed frame according to the rotation; the first lens retaining frame is restricted from rotating by engaging with the second straight advance frame; and the first straight advance frame is configured to engage with any one of the first lens retaining frame, the fixed frame, and the second straight advance frame, and is restricted from rotating by any one of the frames.