FNDU-20C02-10 20 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm

OptoSigma's FNDU-20C02-10 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's extensive catalog of optical elements, sourced from vendors worldwide, and is available on their official website.

The filter is of the sub-type 'Neutral Density Filter', which means it reduces the intensity of all wavelengths of light equally, making it ideal for applications where light intensity needs to be controlled without altering the color balance. The 'Reflective' nature of the filter implies that it reflects a portion of the incident light, while transmitting the rest, which is a unique feature compared to traditional absorptive neutral density filters.

The filter is made from UVFS material, identified as 'UVFS mal- 1965'. This material is specifically designed for use in the ultraviolet spectrum, making it suitable for applications such as UV imaging and spectroscopy. The filter has a thickness of 2mm, providing durability and rigidity.

The filter's geometry includes a diameter of 20mm, making it compatible with a wide range of optical systems. The coating on both the front and back surfaces of the filter is 'opt fndu-10', which likely contributes to its reflective properties and overall performance.

The filter's shape is 'Thin Lens', suggesting that it is designed to minimize optical aberrations and distortions, ensuring high-quality images. The filter is currently in stock and available for purchase on the OptoSigma website.