a holder comprising an upper plate and a side plate extending from the upper plate;

a liquid lens disposed on the upper plate of the holder;

a magnet coupled to the liquid lens;

a substrate disposed on the side plate of the holder; and

a coil coupled to the substrate and facing the magnet,

wherein the liquid lens comprises:

a transparent and elastically extendable membrane;

a body forming a cavity with the membrane therebetween;

a liquid disposed in the cavity; and

a lens forming member in direct contact with the membrane and configured to adjust a curvature of the membrane,

wherein the side plate of the holder comprises a first side plate and a second side plate disposed opposite to the first side plate,

wherein the substrate comprises a first substrate disposed on the first side plate of the holder and a second substrate disposed on the second side plate of the holder, and

wherein the coil comprises a first coil and a second coil both disposed on the first substrate, and a third coil and a fourth coil both disposed on the second substrate,

wherein the magnet comprises a first magnet disposed on the lens forming member and facing the first coil, a second magnet disposed on the lens forming member and facing the second coil, a third magnet disposed on the lens forming member and facing the third coil, and a fourth magnet disposed on the lens forming member and facing the fourth coil,

wherein an upper portion of the first magnet has an N-pole polarity, and a lower portion of the first magnet has an S-pole polarity, and

wherein an upper portion of the second magnet has an S-pole polarity, and a lower portion of the second magnet has an N-pole polarity.