the present invention provides a method of fabricating at least one lens . the method comprises providing a substrate with a surface coating . the surface coating is deformable and the method comprises imprinting a structure into the surface coating . the method also comprises etching at least a region of the imprinted structure and the substrate to remove at least a portion of the imprinted structure and the substrate . the structure is shaped so that the etching forms at least a portion of the at least one lens in the structure .