The luminous flux is measured in lumens (lm) and it indicates the quantity of luminous energy emitted by a source. In our products the lighting surface can reach the edges, creating a typical frameless lighted profile. In our products light comes from one or more LED strips installed on the perimeter. To reach perfect uniformity on the lighting surface two intermediate stages are required. In the first stage the light passes the slab with micro-prism incisions and is uniformly distributed over the whole area. In the second one the light is further distributed by the thin layer of an opal diffuser that completely hides the micro prisms, reduces light intensity, hides the LED strip and expands the light up to the edges.