Near-Field Goniophotometer to Aid the Development of Ultra Efficient Lighting Sep 30, 2009

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).

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