30 Sep 2009 The PM-NFMS near-field goniophotometer provides a more accessible and affordable solution for those developing the next generation of ultra efficient lighting, enhancing their ability to innovate. The Radiant Imaging PM-NFMS combines a motorised goniometer stage with a ProMetric CCD imaging photometer / colorimeter to perform a near-field angular measurement of the luminance and colour from LEDs, luminaires and solid state lighting. PM-NFMS software fully automates the data acquisition and ProSource software then scales this to far-field luminous intensity values from which standard photometric files are generated (IES, EULUMDAT). So-called “photometric data” defines how much light a luminaire emits and in what direction; lighting designers use this standardised data with lighting design programmes to determine the number and positioning of luminaires in order to create the desired illuminance (lux levels). | 
