초록 ▼

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 le

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.

대표청구항 ▼

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 p

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; anda 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; whereina 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. 2. The lens barrel according to claim 1, further comprising: a second frame body configured to rotate around the first optical axis with respect to the first frame body, whereinthe main frame includes a first cam follower,the second frame body includes a first cam, the first cam engaged with the first cam follower,the first cam follower moves along the first cam when the second frame body rotates with respect to the first frame body, and the frame group moves with respect to the first frame body in the first optical axis direction by the movement of the first cam follower. 3. The lens barrel according to claim 2, further comprising: a third frame body configured to support the first lens and move with respect to the first frame body in the first optical axis directionat least a part of the first lens and at least a part of the second lens overlap in the housed state when viewed from a direction orthogonal to the first optical axis direction. 4. The lens barrel according to claim 3, wherein the third frame body includes a second cam follower,the second frame body includes a second cam, the second cam engaged with the second cam follower,the second cam follower moves along the second cam when the second frame body rotates with respect to the first frame body, and the third frame body moves with respect to the first frame body in the first optical axis direction by the movement of the second cam follower. 5. The lens barrel according to claim 1, wherein the contact portion is formed in a groove shape, the contact portion including two opposing side walls. 6. The lens barrel according to claim 1, wherein the main frame includes a shutter structure. 7. The lens barrel according to claim 1, wherein 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 first frame body. 8. The lens barrel according to claim 1, wherein the region constituting the side wall of the contact portion includes the area near the portion where the contact portion is formed.