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
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 no...
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Format: | Patent |
Sprache: | eng ; fre |
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