Lens driving device, camera module, and camera mounting device

A lens driving device comprising a shake-correcting driving part, the shake-correcting driving part including:

• a shake-correcting magnet part disposed at a periphery of a lens part;
• a shake-correcting coil part disposed separately from the shake-correcting magnet part;
• and
• a shake-correcting supporting part configured to support a shake-correcting movable part including the shake-correcting magnet part with respect to a shake-correcting fixing part including the shake-correcting coil part in a state where the shake-correcting movable part is separated from the shake-correcting fixing part in an optical axis direction,
• wherein the shake-correcting driving part performs shake correction by swaying the shake-correcting movable part with respect to the shake-correcting fixing part in a plane orthogonal to the optical axis direction by use of a driving force of a shake-correcting voice coil motor including the shake-correcting coil part and the shake-correcting magnet part,
• wherein the shake-correcting supporting part is made of an elastomer material, and has a biaxial hinge structure for supporting the shake-correcting movable part such that the shake-correcting movable part is movable in the plane orthogonal to the optical axis direction, and
• wherein the shake-correcting movable part includes an auto-focusing driving part, the auto-focusing driving part including:
• an auto-focusing coil part disposed at a periphery of the lens part,
• an auto-focusing magnet part disposed separately from the auto-focusing coil part in a radial direction, and
• an auto-focusing supporting part configured to support an auto-focusing movable part including the auto-focusing coil part with respect to an auto-focusing fixing part including the auto-focusing magnet part,
• wherein the auto-focusing driving part performs automatic focusing by moving the auto-focusing movable part in the optical axis direction with respect to the auto-focusing fixing part by use of a driving force of an auto-focusing voice coil motor including the auto-focusing coil part and the auto-focusing magnet part, and wherein the auto-focusing supporting part includes a supporting part main body and a stiffening part,
• wherein the supporting part main body includes a fixed end which is connected to the auto-focusing fixing part, a free end which is connected to the auto-focusing movable part, and an arm which couples the fixed end and the free end,
• wherein the arm includes two hinge parts formed of an elastomer material, each of the two hinge parts being thinner than a part surrounding the each of the two hinge parts, each of the two hinge parts being configured to operate about a direction orthogonal to the optical axis direction, the arm being configured to be bent along with movement of the auto-focusing movable part in the optical axis direction such that bending directions of the two hinge parts are opposite directions, and
• wherein the stiffening part is formed of a material having a rigidity higher than a rigidity of the elastomer material, the stiffening part being configured to be disposed between the two hinge parts of the arm.