Measuring system for determining the spectrally resolved directional reflectance of mirror specimens

摘要

Measuring system (1) for determining the spectrally resolved directional reflectance of mirror specimens (3), comprising a radiation generator (5) for generating collimated electromagnetic radiation (7) of defined wavelength and a radiation detector device (21) with a radiation collector (22) and at least one Radiation detector (27a, 27b), wherein the collimated electromagnetic radiation (7) is irradiated on the mirror sample (3) and radiation (7a) reflected from the mirror sample (3) is detected by the radiation detecting device (21), and wherein the radiation collector (22 ) has an inlet opening (23) of a predetermined size and a radiation concentrator (19) of the mirror sample (3) reflected collimated electromagnetic radiation (7a) concentrated on the inlet opening (23), characterized in that the inlet opening (23) has an adjustable aperture (25).