Image shake correcting module

An image shake correcting module comprising:

• an optical module;
• a first holder having the optical module mounted therein, the first holder having side surfaces surrounding the optical module, an upper surface and a lower surface, the first holder having inner space open at upper and lower surfaces of the first holder;
• a first drive unit comprising a first drive ball, a first magnet and a first coil for primary driving of the first holder;
• a second holder having the first holder mounted therein such that the side surfaces of the first holder are surrounded by the second holder;
• a second drive unit comprising a second drive ball, a second magnet, and a second coil for secondary driving of the second holder;
• a third holder having the second holder mounted therein;
• a housing having the third holder mounted therein;
• an outer cover covering at least an upper portion of the housing and having an opening through which the optical module passes;
• and
• a substrate disposed on the housing and supplying electric current to the first coil and the second coil,
• wherein the primary driving comprises movement of the first holder in one horizontal direction,
• the secondary driving comprises movement of the second holder in another horizontal direction perpendicular to the one horizontal direction, and
• the first drive ball is placed on one of the side surfaces of the first holder and the second drive ball is placed on one side surface of the second holder, the one side surface of the second holder facing another of the side surfaces of the first holder adjacent to the one of the side surfaces of the first holder.