Maximum miniaturisation in coating thickness measurement OptiSense is the world's leading provider of photothermal measuring systems for coating thicknesses on a wide variety of substrates. All good things ... come in threes. Our OptiSense portfolio proves that the best things usually come in threes. Whether industrial test systems, mobile measurement devices or services, our solutions are guaranteed to get to grips with any measurement task, no matter how demanding. Since the PaintChecker sensors are developed and manufactured in-house, we can also offer you tailor-made solutions for the most unusual applications. Success takes experience We start as a spin-off of the Fraunhofer-led Optics Centre NRW in Bochum. Now we are at home in Haltern am See for over 10 years