Lens assembly and optical image stabilization method for same

A lens assembly, comprising:

• a lens;
• a first substrate attached to the lens, including a first side plate placed at one side of the lens and a second side plate placed at another side of the lens;
• a first memory alloy wire having a first fixing end fixed on the first side plate, a first extension section extending from the first fixing end in a direction of the second side plate and suspended above the lens, a second fixing end fixed to one side of the lens close to the second side plate, a second extension section reversely extending from the second fixing end in a direction of the first side plate and suspended above the lens, and a third fixing end connected with the second extension section and fixed to the first side plate;
• a second memory alloy wire having a fourth fixing end fixed on the second side plate, a third extension section extending from the fourth fixing end in the direction of the first side plate and suspended above the lens, a fifth fixing end fixed to the side of the lens close to the first side plate, a fourth extension section reversely extending from the fifth fixing end in the direction of the second side plate and suspended above the lens, and a sixth fixing end connected with the fourth extension section and fixed to the second side plate;
• a restoring structure arranged between the lens and the first substrate to cooperate with the first memory alloy wire and the second memory alloy wire to restore deviated lens to an original position, wherein
• a symmetry axes of the first extension section and the second extension section are perpendicular to an optical axis of the lens;
• and
• a symmetry axes of the third extension section and the fourth extension section are perpendicular to the optical axis of the lens.