Lens assembly for optical image stabilization and focus adjustment

An optical lens assembly comprising:

• a frame, a bendable transparent lens cover and a transparent back window connected to the frame;
• a transparent, deformable, non-fluid lens body sandwiched between the lens cover and the back window to form a lens having an optical axis and a first optical power;
• an actuator system configured to apply force to the lens cover to change an overall shape of the lens, the actuator system comprising a plurality of individually addressable actuators each being connected to the frame and configured to apply force to the lens cover in a direction at least substantially along the optical axis the lens cover being connected to the frame via the actuator system;
• wherein the actuator system has a focus adjustment mode where the plurality of actuators are addressed to apply force to the lens cover in the same direction to adjust the optical power/Sag of the lens;
• and/or
• wherein the actuator system has an optical image stabilisation mode where each of the one or more plurality of actuators are addressed to apply different forces to the lens cover in a manner that varies along the rim of the lens cover to tilt the optical axis of the lens,
• wherein the lens cover comprises one or more stiffeners, on its circumferential section serving to distribute strain and non-symmetrical deformations around the optical axis resulting from the applied forces over larger areas of the lens cover,
• wherein the actuator system is configured to operate in in the focus adjustment mode and the image stabilisation mode simultaneously by addressing each actuator to apply a force being at least substantially a sum of the forces that would be applied in these modes, and
• wherein the actuator system is configured to displace at least a part of the edge of the lens cover with respect to the frame.