Patent ID: 7961410

Claim:
A lens barrel, comprising: a plurality of lens groups; a plurality of lens-retaining frames that retain the plurality of lens groups, respectively; a lens-retaining frame driving device that drives the plurality of lens-retaining frames and moves at least one of the plurality of lens groups between a collapsed state and a photographing state; and a movable lens cylinder that retains therein the plurality of lens-retaining frames, wherein the plurality of lens-retaining frames includes: a first retractable lens-retaining frame that retains at least one of the plurality of lens groups and retracts to a position located outside an inner radius of the movable lens cylinder in the collapsed state; a second retractable lens-retaining frame that retains at least one of the plurality of lens groups and retracts to a position located outside an inner radius of the movable lens cylinder in the collapsed state; a first retractable lens-moving member that retains and moves the first retaining frame; and a second retractable lens-moving member that retains and moves the second retractable lens-retaining frame, wherein at least one of the first and second retractable lens-retaining frames are retained to be movable relative to the respective retractable lens-moving member along an axis parallel to an optical axis direction in the collapsed state, and wherein at least one of the first and second retractable lens-retaining frames includes a contact portion which makes at least one of the first and second retractable lens-retaining frames move along the axis parallel to the optical axis direction when the lens-retaining frames contact each other in the collapsed state.