Camera module

A camera module, comprising:

• a first lens group that transmits light;
• a first lens block that holds the first lens group and has a first face;
• a second lens group that transmits the light;
• and
• a second lens block that holds the second lens group, has a drive mechanism to drive the second lens group in an optical axis direction, and has a second face opposite the first face, wherein
• a first hole having a first inner peripheral surface having a circumferential shape is formed in one of the first face and the second face,
• the first inner peripheral surface has a central axis that coincides with an optical center of the first lens group when the first hole is formed in the first face, and has a central axis that coincides with an optical center of the second lens group when the first hole is formed in the second face,
• a first shaft having a first outer peripheral surface having a circumferential shape and being fitted into the first hole is formed in another of the first face and the second face, and
• the first outer peripheral surface has a central axis that coincides with the optical center of the second lens group when the first shaft is formed in the second face, and has a central axis that coincides with the optical center of the first lens group when the first shaft is formed in the first face.