FND-15C02-70 15 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

OptoSigma's FND-15C02-70 is a 15 mm diameter, unmounted Neutral Density Filter, designed for use within the visible light spectrum, specifically between 400-700nm. This filter is made from N-BK7, a high-quality borosilicate glass, known for its excellent transmittance and low auto-fluorescence, making it an ideal choice for a wide range of optical applications.

The filter features a thickness of 2mm, which is relatively thin, reducing the risk of unwanted optical distortions. It is coated with an Opt FND-70 coating on both the front and back surfaces, which provides a high level of neutral density, ensuring consistent light reduction across the entire visible spectrum.

This filter is designed in a thin lens shape, which not only provides a sleek aesthetic but also allows for easy integration into various optical systems. The unmounted design offers flexibility in terms of integration, allowing users to pair it with their preferred mounting solution.

The FND-15C02-70 is currently in stock and available for immediate purchase through the OptoSigma website. With its reliable performance, high-quality materials, and versatile design, this Neutral Density Filter is a valuable addition to any optical setup.