A fluidic variable focal length optical lens has a sealed housing having a first fluidic chamber filled with a first fluidic medium and a second fluidic chamber filled with a second fluidic medium, the first and the second fluidic chamber being separated from each other by an elastic membrane, wherein the first and the second fluidic medium have different refractive indices, and a deformator configured to deform the membrane laterally within a pump zone, thereby laterally displacing the first fluidic medium from the pump zone to a lens zone and the second fluidic medium from the lens zone to the pump zone, so that the membrane also deforms in the lens zone and changes a focal length of the lens zone along a normal direction.