Datasensor LD46 luminescence sensors emit ultraviolet light and detect only visible light converted and reflected from fluorescent objects or marks, independent from the background color and surface. Datalogic LD46 sensors can reach a 100mm operating distance and a 2kHz switching frequency, thanks to the UV high-power emission using 6 LEDs. The high power and definition of the LD46 sensor light spot enable the detection of critical targets with a very poor or non-homogeneous or discontinued luminescent level, as for example on raw wood, corrugated carton, fabric, ceramic tiles.