Spectroradiometric measurement system for scotopic and mesopic luminance - illuminance measurements

The spectroradiometric measurement system has been designed to be installed at the INRIM goniophotometer for the characterization of light sources and luminaires, but can be also used on site. The proposed solution consists in measuring both the photopic luminous intensity (in lab is possible to measure the luminous intensiti) and the relative spectral distribution of the light in each measured direction. Using the appropriate algorithms, these two set of data permit to evaluate also mesopic and scotopic quantities in lighting engineering applications