Filmetrics has announced an online reflectance calculator for simulation of reflectance spectra. It calculates the optical response of thin-film structures consisting of up to 20 individual layers in the spectral range between 200 nm and 2000 nm. It can be used to design functional materials such as anti-reflection and high-reflectance coatings and optical filters. With already well over 1,500 visitors per month, the calculator enjoys great popularity.read more