PHOTOMETRIC MEASUREMENT OF ROAD LIGHTING LUMINAIRES (PO60, 1007-1011)

For the calculation of the photometric parameters of the road lighting are needed photometric data of the used luminaires. These data are in the form of an intensity table (I-table) which gives the distribution of luminous intensity emitted by the luminaire in all relevant directions. A goniophotometer is needed to measure the luminous intensity distribution of luminaires. We know the various goniophotometers which adopting different test methods for testing luminous distribution. The results from goniophotometric measurements are very important for lighting engineers who are using these results in lighting calculation of photometric parameters of the various lighting systems. Especially in road lighting calculation distance between angles should be measured as much as possible providing sufficient photometric data for the calculation. Some new optical systems and some LED luminaires which as found by measurement may contain various local extremes in the luminous intensity distribution curve.