MEASURING TECHNOLOGY FOR LED SYSTEMS
W/cm² has become the established unit of measurement in LED systems. This value indicates the maximum intensity per unit of area. However, since the intensity decreases with increasing distance, the value directly below the exit window is often cited. For comparable measurements, the location at which the power was measured is decisive. Values can vary depending on whether measurements are taken at the chip surface, at the exit window of the emission or at the substrate level. The spatial and temporal distribution in the measuring field must also be taken into account.
Furthermore, it is important to ensure that a suitable UV measuring system is used. This is characterised by a high and as uniform a sensitivity as possible in the wavelength range emitted by the LED. Please contact us for more information.
