More than coloured glass

Optical Filters — high-tech products

Delta Optical Thin Film's filters are much more than coloured glass. What appears to the eye as a piece of coloured glass is actually a highly engineered product. To fulfill our customers' challenging requirements we master all the complex aspects of designing optical thin film filters that contain up to 400 hundred dielectric layers. We also have full control over the deposition process that often lasts more than 40 hours.

On the pages in this section you find valuable and interesting background information about filter technology in general and Delta Optical Thin Film's filters specifically.

Did you know that Delta Optical Thin Film was amongst the first to introduce Ultra-Hard-Coated technology to optical filters?