An electrode film, comprising: a transparent film of dielectric material having first and second surfaces (54, 55); a first electrode pattern disposed on the first surface of the transparent film including a first set of parallel conductive electrodes, wherein each of the conductive electrodes in the first set of parallel conductive electrodes is connected to a first bus; a second electrode pattern disposed on the first surface of the transparent film including a second set of parallel conductive electrodes, wherein each of the conductive electrodes in the second set of parallel conductive electrodes is connected to a second bus; wherein elements of the first electrode pattern do not cross over elements of the second electrode pattern and wherein the first set of parallel conductive electrodes and the second set of parallel conductive electrodes are arranged in an interlaced pattern on said first surface; a third electrode pattern disposed on the second surface of the transparent film including a third set of parallel conductive electrodes, wherein each of the conductive electrodes in the third set of parallel conductive electrodes is connected to a third bus; wherein the conductive electrodes in the first, second and third sets of parallel conductive electrodes (50a, 50b, 50c) are all parallel to each other in a y-direction; wherein the first, second and third sets of parallel conductive electrodes (50a, 50b, 50c) are arranged in a further interlaced pattern such that they form a repeating sequence in an x-direction on the first surface and the second surface; and wherein the first, second and third buses (53a, 53b, 53c) are configured to be connected to respective sources of electrical power supplying respective waveforms, such that the supplied waveforms generate a time-varying electric field pattern above a surface of the electrode film to remove dust therefrom; characterized in that the conductive electrodes are conductive mesh patterns including a pattern of open areas; and in that the conductive mesh patterns include a plurality of parallel rails interconnected by a pattern of rungs. a transparent film of dielectric material having first and second surfaces (54, 55); a first electrode pattern disposed on the first surface of the transparent film including a first set of parallel conductive electrodes, wherein each of the conductive electrodes in the first set of parallel conductive electrodes is connected to a first bus; a second electrode pattern disposed on the first surface of the transparent film including a second set of parallel conductive electrodes, wherein each of the conductive electrodes in the second set of parallel conductive electrodes is connected to a second bus; wherein elements of the first electrode pattern do not cross over elements of the second electrode pattern and wherein the first set of parallel conductive electrodes and the second set of parallel conductive electrodes are arranged in an interlaced pattern on said first surface; a third electrode pattern disposed on the second surface of the transparent film including a third set of parallel conductive electrodes, wherein each of the conductive electrodes in the third set of parallel conductive electrodes is connected to a third bus; wherein the conductive electrodes in the first, second and third sets of parallel conductive electrodes (50a, 50b, 50c) are all parallel to each other in a y-direction; wherein the first, second and third sets of parallel conductive electrodes (50a, 50b, 50c) are arranged in a further interlaced pattern such that they form a repeating sequence in an x-direction on the first surface and the second surface; and wherein the first, second and third buses (53a, 53b, 53c) are configured to be connected to respective sources of electrical power supplying respective waveforms, such that the supplied waveforms generate a time-varying electric field pattern above a surface of the electrode film to remove dust therefrom; characterized in that the conductive electrodes are conductive mesh patterns including a pattern of open areas; and in that the conductive mesh patterns include a plurality of parallel rails interconnected by a pattern of rungs.