Tunable Lens with Actuators

A tunable lens comprising:

• a lens element having a periphery;
• a lens shaping element attached to the periphery of the lens element;
• and
• a rotating ring having a plurality of recesses distributed around the periphery, wherein the rotating ring is configured to rotate along a first direction, wherein each one of the plurality of recesses is configured to adjust a position of the lens shaping element in a second direction that is different than the first direction, and wherein at least two of the plurality of recesses have different shapes.

A tunable lens comprising:

• a lens element having a periphery;
• a lens shaping element attached to the periphery of the lens element;
• a chassis;
• and
• flexures distributed around the periphery, wherein each flexure has first and second opposing ends, wherein the first end of each flexure is attached to the chassis and wherein the second end of each flexure is attached to the lens shaping element;
• and
• a common wire that is configured to displace the second ends of the flexures along a first direction and wherein the displacement of the second ends of the flexures along the first direction causes displacement of the second ends of the flexures along a second direction that is different than the first direction.

A head-mounted device, comprising:

• a frame including a nose bridge;
• a temple coupled to the frame;
• a pulley system coupled to the frame;
• and
• a tunable lens in the frame, wherein the tunable lens comprises:
• a lens element having a periphery,
• a lens shaping element attached to the periphery of the lens element and
• a plurality of actuators distributed around the periphery, wherein each actuator in the plurality of actuators is configured to adjust a position of the lens shaping element, each one of the plurality of actuators is controlled by a common wire, and the common wire is wrapped around the pulley system.