Glass is one of the most popular material for buildings all over the world. It provides high comfort and ambience for daily living and the working environment. Combined with sophisticated coating technologies, glass has very useful characteristics: Heat transfer is reduced for highest energy efficiency in housing and offices. This helps to protect the environment and to save costs. High transmittance creates bright, light-filled rooms. For a neutral appearance or customized design, colors can also be adjusted in the glass pane.
The complexity of these coatings requires a steady and reliable control of the production process. Parameters like reflectance and transmission spectra, color values and layer thickness have to be accurately monitored over long periods with a high measurement frequency. This requires reliable in-line monitoring systems and robustness in harsh environments, e.g. in float lines or within the coater under vacuum conditions.