CIE 250:2022

This Technical Report provides basic measurement principles and practical guidance on spectroradiometry of optical radiation sources in the ultraviolet, visible and near-infrared regions of the electromagnetic spectrum in the wavelength range from 200 nm to 2 500 nm.
The document primarily deals with spectral measurements of irradiance, radiance, radiant intensity, radiant flux and derivative quantities. The document provides a detailed overview of relevant terminology and basic measurement principles, including those for instrument calibration. It provides practical guidance for identifying, understanding and quantifying relevant measurement uncertainty components.