We present for quality control in R2R-production an inline-imaging-ellipsometer based on a polarization camera. The polarization measurement is done with a segmented nano-grid-polarisator in front of the CMOS-sensor of the camera. The measured polarisations are oriented at 0°, 45°, 90°, and 135°. The illumination is quasi-monocromatic, using collimated light from an LED. The angle of incidence is fixed, typically near the Brewster-Angle of the substrate. The system can be used for full quality control of thin layers with a thickness of up to 500nm. The full foil width up to several meters can be imaged with 1200 points along the line to be examined in parallel with a frame rate of 24fps. Typical problems with foil-vibrations and backside-reflection are solved via a measurement directly on a roll. This 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. For a multi-layer production line the simple system can be easily installed after each production step, to control every layer in-time.