Delta Optical Thin Film A/S is a privately owned manufacturer of advanced optical thin film components. We focus on designing and manufacturing custom parts for our OEM customers. Being one of the pioneers in the Optical Thin Film industry, we use our knowledge to interact with our customers and find the right solution for their volume applications at the right price. 

Since the 1970’s Delta provided specialized, custom designs and the manufacturing of high performance custom optical filters for discerning OEM customers. We offer both Homogenous Bandpass, Edge and Blocking Filters, and Beamsplitters as well as Continuously Variable Filters. With our proprietary design and deposition control software, we meet or exceed our customers’ requirements, and ensure a fast and efficient process.