Lens drive device

摘要

The lens drive device is equipped with a first supporting body that holds the lens and is movable in the direction of the optical axis, a second supporting body that holds the first supporting body, a fixed body that holds the second supporting body in a manner enabling movement in directions that are roughly orthogonal to the optical axis direction, a first drive mechanism for driving the first supporting body, a second drive mechanism for driving the second supporting body in a first direction, and a third drive mechanism for driving the second supporting body in a second direction. The first supporting body is supported by the second supporting body by means of first supporting members which are formed from an elastic material; and the second supporting body is supported by the fixed body by means of second supporting members, which are formed from an elastic material.

主权项

1. A lens drive device comprising:
a first holding body which holds a lens and is movable in an optical axis direction of the lens; a second holding body which holds the first holding body so that the first holding body is movable in the optical axis direction; a fixed body which holds the second holding body so that the second holding body is movable in a first direction and a second direction, the first direction and the second direction being substantially mutually perpendicular and substantially perpendicular to the optical axis direction; a first drive mechanism which is structured to drive the first holding body in the optical axis direction; a second drive mechanism which is structured to drive the second holding body in the first direction; a third drive mechanism which is structured to drive the second holding body in the second direction; a plurality of wires which connects the second holding body with the fixed body; a buckling prevention member for preventing buckling of the wire; and a plate spring which connects the first holding body with the second holding body, wherein the wire is formed in a straight line shape, wherein the second holding body is supported by the fixed body so as to be movable in the direction substantially perpendicular to the optical axis direction through the plurality of the wires,
wherein a part of the plate spring is the buckling prevention member; wherein the plate spring is provided with a first fixing part which is fixed to the first holding body, a second fixing part which is fixed to the second holding body, an arm part which connects the first fixing part with the second fixing part, and a wire fixing part which is formed so as to be protruded from the second fixing part and to which one end side of the wire is fixed, and wherein the wire fixing part is the buckling prevention member; and wherein the buckling prevention member is formed of elastic material and is elastically deformed in the optical axis direction by a force smaller than a buckling load of the wire.