Design and implementation of multispectral band gonioradiometer for ultraviolet light sources measurements

Abstract

The aim of this study is to design a multispectral band gonioradiometer that can measure the distribution of irradiance from ultraviolet (UV) light sources using different band spectrum detectors. One detector is sensitive to UVA, while the other is sensitive to UVC. The gonioradiometer can also acquire signals from both detectors simultaneously, including the UVC/blue spectral band. The system is driven by software developed in LabVIEW, which allows for interactive front-panel user interfaces to record the signals. The uncertainty associated with the angular irradiance distribution measurements using the gonioradiometer system was evaluated to be approximately 2% for UVA, 2.4% for UVC, and less than 1.8% for blue light measurements (at k = 2).