Painted car surface property determination unit, has optical divider with cross shaped openings with absorbing conical walls to provide controlled illumination

摘要

A painted car surface property determination unit has an optical divider (11) with cross shaped openings (15) with absorbing conical walls at about 45 degrees to its thickness and several light sources (1) with matt glass, diffusing screen or disc scatterers and different spectra in a hemispherical housing (5) having a comparator (6) with a direct light block and detectors (20) in a lower housing. Independent claims are included for procedures using the unit.