Fig. 4From: A liquid progressive multifocal lens adjusted by the deformation of a non-uniform elastic membrane due to the variation of liquid pressureThe deformation displacement contour maps of the non-uniform PDMS membrane: a horizontal view and longitudinal view in half section on the pressure of 104Â Pa, horizontal view and longitudinal view on the pressure of (b) 90Â Pa, c 100Â Pa and (d) 110Â PaBack to article page