Voice Coil Motor for Driving Liquid Lens and Lens Assembly having Voice Coil Motor

A lens assembly, comprising:

• a liquid lens;
• and
• a voice coil motor configured to drive the liquid lens and comprising:
• a plurality of sub motor parts that is capable of being independently controlled, wherein each of the sub motor parts comprises:
• an unmovable part;
• a movable part capable of moving along an optical axis direction relative to the unmovable part;
• a drive circuit part configured to control a moving distance of the movable part;
• and
• a connection elastic piece coupled to the liquid lens and the movable part,
• wherein the connection elastic piece is a plate spring,
• wherein a first stiffness coefficient of the connection elastic piece in the optical axis direction is greater than a second stiffness coefficient of the connection elastic piece in a direction perpendicular to the optical axis direction, and
• wherein the movable part is configured to drive the connection elastic piece to squeeze the liquid lens when a force is applied to the movable part in the optical axis direction.