Imaging light measurement devices

Abstract

This section introduces state-of-the-art light measurement devices with optics in general (spot meters) and then presents aspects that are specific to the class of imaging light measurement devices. Their structure is described in detail with focus on critical aspects and artifacts that are typical to this class of instruments. Characterization of the performance of the instruments as a basis for correction of nonideal properties is described. Precautions for the user of imaging light measurement devices are provided in the next subsection in order to assure highquality measurements. This section concludes with a listing of measurement tasks where application of imaging light measurement devices has proven to be convenient and new measurements that would - without imaging light measurement devices - require much more instrumental efforts.