Patent ID: 7988370

Claim:
A camera with an electroactive telescopic shutter module comprising: a lens module; an image sensor; and a shutter module comprising a frame and an electroactive telescopic unit received in the frame; wherein the centers of the image sensor and the shutter module are on an optical axis of the lens module, and the electroactive telescopic unit comprises: a first electroactive polymer layer; two compliant electrode layers positioned on opposite surfaces of the first electroactive polymer layer; and two second electroactive polymer layers positioned on opposite sides of the respective compliant electrode layers to the first electroactive polymer layer; wherein a thickness of the first electroactive polymer layer is greater than that of the second electroactive polymer layer, the center of the electroactive telescopic unit has a through hole through the first electroactive polymer layer, the two compliant electrode layers, and the two second electroactive polymer layers, a central axis of the through hole and the optic axis of the lens module are coaxial, and the electroactive telescopic unit is contractible or expandable along a direction perpendicularly to the optic axis of the lens module in response to a change in a voltage applied between the two compliant electrode layers, thus changing the diameter of the through hole and controlling the amount of the light passing through the through hole.