The lens elements are semi-cylindrical, vertical features on the front of the screen. By optimizing the design of the lenticular lens elements, a very wide horizontal viewing angle can be obtained in combination with a high screen gain.
These lens arrays are an achievement of micro engineering. On the dnp NWA screen there are four lenses per millimetre (also described as a pitch of 0.25mm). This means images of the highest resolutions can be displayed on even the smallest screen sizes.