Abstract: The disclosed device may include a lens stack. The lens stack may include a first gradient-index liquid crystal lens and a second gradient-index liquid crystal lens in tandem with the first gradient-index liquid crystal lens. The lens stack may be configured to reach a target optical power based on a first optical power of the first gradient-index liquid crystal lens and a second optical power of the second gradient-index liquid crystal lens. Various other devices, systems, and methods are also disclosed.

Abstract: A lens system may include a lens having a liquid crystal layer and a driving electrode array disposed on a first side of the liquid crystal layer, the driving electrode array including a plurality of driving zones that are independently operable. The plurality of driving zones may each include a plurality of driving electrodes consecutively arranged along a radial direction extending from a central region of the lens. The lens system may include a controller that is configured to independently operate each of the plurality of driving zones via a separate plurality of bus lines coupled to each of the plurality of driving zones. The controller may be configured to operate at least one of the driving zones based on a gaze direction of the user. Various other devices, systems, and methods are also disclosed.

Abstract: A lens system may include a lens and a leakage-reduction element overlapping the lens. The lens may include a driving electrode array, a common electrode, and a lens liquid crystal layer disposed between the driving electrode array and the common electrode. The leakage-reduction element may include a guest-host liquid crystal layer having dye molecules in a liquid crystal solution. A display device may include a display screen, which has a plurality of light emitting elements, and a lens system that receives light emitted from the display screen. Various other devices, systems, and methods are also disclosed.

Abstract: The disclosed system may include at least one gradient-index liquid crystal lens. The system may include a selection module that selects a viewing angle. The system may also include an adjustment module that dynamically adjusts a phase reset property of the gradient-index liquid crystal lens in response to the selected viewing angle. Various other devices, systems, and methods are also disclosed.

Abstract: The disclosed device may include a lens stack. The lens stack may include a first gradient-index liquid crystal lens and a second gradient-index liquid crystal lens in tandem with the first gradient-index liquid crystal lens. The lens stack may be configured to reach a target optical power based on a first optical power of the first gradient-index liquid crystal lens and a second optical power of the second gradient-index liquid crystal lens. Various other devices, systems, and methods are also disclosed.

Abstract: A lens system may include a lens having a liquid crystal layer and a driving electrode array disposed on a first side of the liquid crystal layer, the driving electrode array including a plurality of driving zones that are independently operable. The plurality of driving zones may each include a plurality of driving electrodes consecutively arranged along a radial direction extending from a central region of the lens. The lens system may include a controller that is configured to independently operate each of the plurality of driving zones via a separate plurality of bus lines coupled to each of the plurality of driving zones. The controller may be configured to operate at least one of the driving zones based on a gaze direction of the user. Various other devices, systems, and methods are also disclosed.

Abstract: A method of removing an aluminide diffusion coating from a gas turbine engine component having a nickel alloy base material may comprise: disposing the gas turbine engine component in a solution, the solution including an acid between 5% and 15% vol./vol. and water between 85% and 95% vol./vol.; placing the gas turbine engine component in electrical contact with a graphite plate; and removing the aluminide diffusion coating from the gas turbine engine component in response to placing the gas turbine engine component in electrical contact with the graphite plate and disposing the gas turbine engine component in the solution.