LAMP FOR VEHICLE

A lamp for a vehicle, and a system therefor are provided. The lamp includes a lamp housing part having an internal space to accommodate a light source; an outer lens part coupled to one side of the lamp housing part and to cover the internal space; and a vibration part fixed to the lamp housing part or the outer lens part. The vibration part includes a first module including a first magnet, fixed to one side of the outer lens part, and a second module facing the first module and including a second magnet facing the first magnet, a second magnet fixing portion to accommodate the second magnet, and a coil member provided at one side of the second magnet and accommodated in the second magnet fixing portion. A groove region is formed in an inner surface of either the outer lens part or the lamp housing part.