OptoSigma's MFNDU-25-40 is a 25 mm diameter, thin mounted Neutral Density Filter, designed for use in the ultraviolet spectrum. This filter is part of the UVFS series, identified by the material ID "uvfs mal- 1965".
The filter boasts a thickness of 2mm, providing a robust and durable construction. It features a Reflective Neutral Density coating on both the front and back, specifically the "opt fndu-40" coating. This coating is designed to maintain a consistent neutral density across the entire spectrum, ensuring accurate and reliable results.
The filter is designed in a Thin Lens shape, which helps to minimize optical aberrations and distortions. This makes it an ideal choice for applications that require high precision and accuracy.
The MFNDU-25-40 is currently in stock and available for purchase through the OptoSigma website. The product's webpage provides further technical specifications and purchasing information.