Optical measurement method for high-speed quality control of viscous materials based on fluorescence

This study presents an innovative approach of high-speed measurement for online quality control of viscous materials in a manufacturing process. The measurement method is based on fluorescence imaging and works on a non-contact basis. The measurement system captures three similar fluorescence images of a moving viscous object in different optical paths. The maximum speed of the objects being evaluated is 5 m/s. The main areas of application of this system are the detection of mixing ratios and the identification of impurities in the fluorescing viscous materials. Using the presented measurement setup, it is possible to detect very small variances in particular and unwanted components in viscous materials.