FNDU-20C02-92 20 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm

The FNDU-20C02-92 is a 20 mm diameter, unmounted Neutral Density Filter, sourced from the renowned optical component manufacturer, OptoSigma. This filter is designed for use in the ultraviolet range, specifically between 200-400nm, making it an ideal choice for applications requiring precise control of UV light intensity.

The filter is constructed with a base shape of a circle, a common choice for its ease of integration into various optical systems. It features a thickness of 2mm, providing sufficient structural integrity while maintaining a compact profile. The material used in this filter is UVFS Mal-1965, a unique choice that caters specifically to UV applications.

The FNDU-20C02-92 is coated with OptoSigma's proprietary FNDU-92 coating on both the front and back surfaces. This coating enhances the filter's performance by reducing unwanted reflections and increasing transmission, thereby improving the overall quality of the optical system.

The filter's geometry is shaped as a thin lens, a design that minimizes optical aberrations and distortions, ensuring the highest quality output. This filter is currently in stock and available for immediate purchase through the OptoSigma website, as indicated by its weblink status.