We present for quality control in R2R-production an inline-imaging-ellipsometer based on a polarization camera, The system, without any moving parts, can be used for full quality control of thin layers with thickness up to 500nm on foil-widths up to 2m. Typical problems like foil-vibrations and backside-reflection are solved via a measurement directly on a roll, which yields a stable image of a line along the roll, with a length equal to the full width of the foil. Due to the foil movement a complete 2D-view of the thickness-distribution can be obtained in-line and in-time. The system was tested with different layer materials, e.g. SiO2, P3HT, PEDOT and Al2O3, all on PET-foils.