Fluid-Filled Tunable Lens

A tunable lens having a periphery, the tunable lens comprising:

• a first lens element;
• a second lens element;
• a fluid-filled chamber that is interposed between the first and second lens elements;
• and
• a single fluid-filled bladder that extends around the entire periphery,
• wherein the single fluid-filled bladder is configured to selectively adjust a displacement of the first lens element relative to the second lens element.

A tunable lens having a periphery, the tunable lens comprising:

• a lens element that forms part of a fluid-filled chamber;
• a chassis that extends in a ring around the periphery;
• actuators positioned along the periphery between the chassis and the lens element, wherein each actuator is configured to adjust a displacement between the chassis and the lens element at a respective position along the periphery;
• and
• a fluid-controlling component that is configured to adjust an amount of fluid in the fluid-filled chamber to cause a displacement between the chassis and the lens element to remain fixed at multiple positions along the periphery while a shape of the lens element is changed by the actuators.