Lens driving device, camera module, and optical device

A camera module, comprising:

• a PCB (Printed Circuit Board);
• an image sensor coupled to the PCB;
• a housing;
• a bobbin so disposed as to move in a first direction at an inside of the housing;
• a first coil disposed at an outer circumferential surface of the bobbin;
• a driving magnet disposed at the housing to face the first coil;
• a base interposed between the housing and the PCB;
• a substrate including a circuit member having a second coil to face the driving magnet between the housing and the base;
• an upper elastic member disposed at an upper side of the bobbin and coupled to the bobbin and the housing, and
• a bottom elastic member disposed at a bottom side of the bobbin and coupled to the bobbin and the housing,
• wherein the bottom elastic member includes a first outer portion coupled to the housing, a second outer portion coupled to the housing and spaced apart from the first outer portion, a first inner portion coupled to the bobbin and a second inner portion coupled to the bobbin and spaced apart from the first inner portion, a first elastic portion connecting the first outer portion to the first inner portion, a second elastic portion connecting the second outer portion to the second inner portion, and an inner connection portion connecting the first inner portion to the second inner portion.

An optical device comprising a main body, a camera module for photographing a subject, and a display portion disposed at one surface of main body to output an image photographed by the camera module,

• wherein the camera module comprises:
• a PCB (Printed Circuit Board);
• an image sensor coupled to the PCB;
• a housing;
• a bobbin so disposed as to move in a first direction at an inside of the housing;
• a first coil disposed at an outer circumferential surface of the bobbin;
• a driving magnet disposed at the housing to face the first coil;
• a base interposed between the housing and the PCB;
• a substrate including a circuit member having a second coil to face the driving magnet between the housing and the base;
• an upper elastic member disposed at an upper side of the bobbin and coupled to the bobbin and the housing, and
• a bottom elastic member disposed at a bottom side of the bobbin and coupled to the bobbin and the housing,
• wherein the bottom elastic member includes a first outer portion coupled to the housing, a second outer portion coupled to the housing and spaced apart from the first outer portion, a first inner portion coupled to the bobbin and a second inner portion coupled to the bobbin and spaced apart from the first inner portion, a first elastic portion connecting the first outer portion to the first inner portion, a second elastic portion connecting the second outer portion to the second inner portion, and an inner connection portion connecting the first inner portion to the second inner portion.