High-speed varifocal imaging with a tunable acoustic gradient index of refraction lens

摘要: Fluidic lenses allow for varifocal optical elements, but current approaches are limited by the speed at which focal length can be changed. Here we demonstrate use of a tunable acoustic gradient (TAG) index refraction lens as fast element. The power TAG varies continuously, allowing rapid selection and modification effective time scales 1 μs shorter. wavefront curvature applied to incident light is experimentally quantified function time, single-frame imaging demonstrated. Results indicate that successfully employed perform high-rate multiple locations.