#Product Trends
Characterizing precision surfaces
Evaluating surface flatness, step-height and more
Infrared spectroscopy, encompassing both mid-infrared (MIR) and near-infrared (NIR) techniques, measures the absorption, transmission, or reflection of infrared light as it interacts with molecular vibrations. By analyzing the received light, infrared-spectroscopy can provide highly accurate information regarding fat content and protein concentration in milk and dairy products. The cuvette within the spectroscope is a critical component consisting of high-quality optically transparent materials with an accurate position in the assembly using very precise mechanical fixtures. TopMap whitelight-interferometers (WLI or CSI Coherence Scanning Interferometers) measure the respective parameters of position and orientation of the window in relation to the fixture but also the surface flatness of the fixture as well as vertical step heights between different levels of the cuvette.
Scanning Interferometers offer a non-contact characterization of form, step height and texture providing best vertical resolution independently of the field of view. Covering an aerea of interest of 45 mm x 34 mm in a single shot even without stitching allows to measure the entire cuvette in a single measurement within only seconds. Compared to tactile measurement techniques which mechanically touch the surface at dedicated measurement positions, the optical full-field measurement of the cuvette contains almost a million measurement points.
