Camera module and electronic device

A camera module comprising:

• a fixed base;
• a movable carrier disposed on the fixed base;
• a guiding ball disposed between the fixed base and the movable carrier, wherein the guiding ball provides a degree of freedom of movement of the movable carrier relative to the fixed base;
• a lens system fixed to the movable carrier;
• an image sensor disposed on an image surface of the camera module and configured to receive optical image signal from the camera module;
• an auto focus driving device comprising a first magnet element and a first coil element disposed corresponding to each other, wherein the auto focus driving device is configured to provide a driving force for auto focusing of the lens system;
• and
• an image stabilization driving device configured to provide a driving force for image stabilization of the image sensor;
• wherein each of the fixed base and the movable carrier has a guiding structure, the guiding structure of the fixed base and the guiding structure of the movable carrier correspond to each other and are in physical contact with the guiding ball, so that the movable carrier is movable in a direction parallel to an optical axis of the lens system;
• wherein the camera module further comprises a reflection element, and an object-side surface and an image-side surface of the reflection element respectively correspond to the lens system and the image sensor;
• and
• wherein a distance between a center of the image sensor and the optical axis is D, and the following condition is satisfied:
• 4 mm<D<18 mm.