Photometric characteristics measurement device, especially for use with road surfaces, comprises an arrangement for generating insolation light beams and means for measurement and analysis of the reflected luminance

摘要

Device for measuring the photometric characteristics of a material (22) that comprises: an arrangement for creating N collimated and homogenous secondary light beams (IV), each beam of which insolates a given surface (20, 28) of the material with a given angle of incidence (gamma) relative to the normal (eta) and at a second angle of incidence (approximatelyB) defined in a plane (P) of the insolation surface; a luminance sensor (24) for measuring the reflected luminance (V) from each insolated surface and; means for acquisition and processing of the luminance sensor signal.