Suspension system for a camera lens element

摘要

A camera lens element is suspended on a support structure by balls that allow movement of the camera lens elementorthogonal to the optical axis and plural flexures connected between the support structure and the camera lens element to bias them against the balls while permitting said movement of the camera lens elementorthogonal to the optical axis. Lateral movement is driven by a lateral actuation arrangement comprising plural SMA actuator wires. The flexures provide a lateral biasing force that biases the camera lens element towards a central position. An electrical connection is made through the flexures from the support structure to the camera lens element. The flexures may be connected to laminated structures.

主权项

1. A suspension system for suspending a camera lens element comprising at least one lens in a manner allowing movement orthogonal to the optical axis of the at least one lens, the suspension system comprising:
a support structure; a camera lens element comprising at least one lens having an optical axis; at least one ball disposed between the support structure and the camera lens element allowing movement of the camera lens element relative to the support structure orthogonal to the optical axis; a biasing arrangement comprising at least one flexure connected between the support structure and the camera lens element, wherein the at least one flexure is arranged to bias the support structure and the camera lens element against the at least one ball whilst permitting said movement of the camera lens element relative to the support structure orthogonal to the optical axis and is arranged to provide a lateral biasing force that biases the camera lens element towards a central position from any direction around the central position; and a lateral actuation arrangement comprising plural shape memory alloy actuator wires connected between the support structure and the camera lens element in an arrangement wherein the shape memory alloy actuator wires are arranged, on selective driving, to move the movable element relative to the support structure in any direction orthogonal to the optical axis of the at least one lens.