Lens driving mechanism, camera module, and optical device

A camera module comprising:

• a base;
• a mover configured to move in an optical axis direction;
• a ball disposed between the base and the mover;
• a first magnet disposed on the mover;
• a substrate disposed on the base;
• and
• a first coil disposed on the substrate and facing the first magnet,
• wherein the mover comprises a bobbin, a lens module coupled to the bobbin, and an iris unit coupled to the lens module,
• wherein the iris unit comprises first and second blades, a second magnet and a second co it facing the second magnet.

A camera module comprising:

• a housing;
• a bobbin disposed in the housing;
• a first magnet disposed on the bobbin;
• a first coil disposed on the housing and facing the first magnet;
• a plurality of lenses coupled to the bobbin;
• an iris unit coupled to the bobbin;
• and
• a flexible substrate elastically connecting the bobbin and the housing,
• wherein the plurality of lenses comprises first and second lenses,
• wherein at least a portion of the iris unit is disposed between the first lens and the second lens,
• wherein the iris unit comprises a second magnet, a second coil facing the second magnet, and first and second blades interacting with the second magnet,
• wherein the flexible substrate comprises a first coupling part coupled to the housing, a second coupling part coupled to the bobbin, and a connection part connecting the first coupling part and the second coupling part, and
• wherein the connection part comprises first to third extension parts disposed in parallel between the first coupling part and the second coupling part, and a round part roundly connecting the first to third extension parts.