FNDU-20C02-60 20 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm

OptoSigma's FNDU-20C02-60 is a 20 mm diameter, unmounted UVFS reflective neutral density filter, designed for use in the ultraviolet spectrum. This filter is part of the OptoSigma family of reflective neutral density filters, which are known for their high-quality optical performance and durability.

The filter is made from UVFS material, which is specifically designed for use in the ultraviolet spectrum, providing excellent transmission and blocking characteristics. The filter has a thickness of 2mm, providing robustness and stability.

The front and back surfaces of the filter are coated with Opt FNDU-60, a specialized coating that enhances the filter's performance in the ultraviolet spectrum. This coating helps to reduce reflections and increase transmission, improving the overall quality of the image.

The filter has a circular shape and a thin lens geometry, making it suitable for use in a wide range of optical systems. It is unmounted, providing flexibility in its integration into existing optical systems.

The FNDU-20C02-60 is currently in stock and available for purchase through the OptoSigma website. With its high-quality construction, specialized materials, and advanced coatings, this filter is an excellent choice for any application that requires precise control of ultraviolet light.