FND-25C02-92 25 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter

OptoSigma's FND-25C02-92 is a 25 mm diameter, unmounted Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This filter is made from N-BK7 Schott, a high-quality borosilicate glass known for its excellent optical properties, making it an ideal choice for a wide range of applications.

The filter features a thickness of 2mm, which is thin enough to minimize optical distortion while providing sufficient durability. It is coated on both the front and back with Opt FND-92, a reflective neutral density coating that reduces light intensity without altering the color balance. This coating is designed to provide a high level of optical performance, ensuring accurate and reliable results.

The FND-25C02-92 is shaped as a thin lens, allowing it to be easily integrated into various optical systems. It is currently in stock and available for immediate purchase through the OptoSigma website, making it a convenient choice for those needing a high-quality, neutral density filter.