World class optical thin films Delta is a world-leading manufacturer of optical thin film coatings with more than fifty years of experience. In the 1960s, Delta pioneered optical monitoring techniques to control deposition. With its unique and advanced optimisation software to match customers' particular optical specifications, Delta ensures a fast and efficient design process.
All our filters are Ultra Hard coatings manufactured on one glass substrate using an advanced plasma process. This process secures unsurpassed environmental and optical stability, highest optical flatness and extreme durability. Our R&D team, offering extensive experience in implementing optical filters and other optical components in bio-tech and analytical instrumentation, will assist in transforming your requirements into real and working products. Choose from our broad range of Linear Variable Filters, fluorescence filter sets, bandpass filters, beam splitters (flats and cubes), laser line filters and mirrors or request a quotation for custom design according to your needs.