Optical unit with shake correction function with magnetic rolling drive mechanism

An optical unit with a shake correction function, the optical unit comprising:

• an optical module structured to hold an optical element;
• a swing support mechanism structured to swingably support the optical module between a reference posture where a predetermined axial line and an optical axis are coincided with each other and an inclined posture where the optical axis is inclined with respect to the axial line;
• a holder structured to hold the optical module through the swing support mechanism;
• a turnable support mechanism structured to turnably support the holder around the axial line;
• a fixed body structured to support the holder through the turnable support mechanism;
• a magnetic swing drive mechanism structured to swing the optical module;
• and
• a magnetic rolling drive mechanism structured to turn the holder;
• wherein the magnetic swing drive mechanism comprises:
• a swing drive magnet which is fixed to one of the optical module and the fixed body;
• and
• a swing drive coil which is fixed to an other of the optical module and the fixed body so as to face the swing drive magnet;
• and
• wherein the magnetic rolling drive mechanism comprises:
• a rolling drive magnet which is fixed to one of the holder and the fixed body;
• and
• a rolling drive coil which is disposed on an other of the holder and the fixed body so as to face the rolling drive magnet;
• wherein the turnable support mechanism comprises a turnable bearing structured to support the holder on an object side with respect to the swing support mechanism;
• wherein
• the magnetic swing drive mechanism comprises a first magnetic swing drive mechanism and a second magnetic swing drive mechanism respectively structured to swing the optical module,
• when two directions perpendicular to the axial line and intersecting each other are referred to as a first direction and a second direction, the swing support mechanism swingably supports the optical module around a first axial line along the first direction and around a second axial line along the second direction,
• the rolling drive magnet and the rolling drive coil face each other in at least one of the first direction and the second direction, and
• the magnetic rolling drive mechanism is disposed between the first magnetic swing drive mechanism and the second magnetic swing drive mechanism around the axial line;
• wherein the first magnetic swing drive mechanism comprises a first swing drive coil fixed to the optical module and a first swing drive magnet fixed to the fixed body
• wherein the second magnetic swing drive mechanism comprises a second swing drive coil fixed to the optical module and a second swing drive magnet fixed to the fixed body, and
• wherein the rolling drive coil is fixed to the holder and the rolling drive magnet is fixed to the fixed body;
• wherein the optical module comprises a lens barrel which holds the optical element,
• wherein the swing support mechanism comprises:
• a frame body which surrounds the lens barrel around the axial line;
• an optical module side support part structured to swingably support the frame body on a side of the optical module;
• and
• a holder side support part structured to swingably support the frame body on a side of the holder,
• wherein the optical module side support part and the holder side support part are located between the first magnetic swing drive mechanism and the second magnetic swing drive mechanisms around the axial line;
• wherein the frame body structuring the swing support mechanism is a gimbal spring comprising a frame part and supporting point parts provided in the frame part at four positions around the optical axis;
• wherein the supporting point part comprises a convex face in a hemispheric shape;
• wherein the optical module side support part and the holder side support part respectively comprise a contact point part formed of a recessed part in a hemispheric shape;
• and
• wherein the optical module side support part is swingably supported by the holder side support part by contacting the convex face in the hemispheric shape of the supporting point part with the contact point part formed in the recessed part in the hemispheric shape.