Research note: Measurement of blue light hazard risk level using a hyperspectral camera

Abstract

Using a calibrated hyperspectral camera, we evaluated the hazard risk level of blue light illumination using the IEC TR 62778:2014 method. The risk levels obtained using the hyperspectral camera were compared with those obtained using the method described in the IEC 62471:2006 guidelines. The IEC TR 62778:2014 risk level of each test product was the same as that obtained using the IEC 62471:2006 method. Compared with the evaluation method implemented using a conventional single-point measurement, our approach using a hyperspectral camera obtained spectral radiance measurements in a much shorter time, of the order of several seconds, via two-dimensional measurements.