FND-50C02-92 50 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

OptoSigma's FND-50C02-92 is a high-quality Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This unmounted filter boasts a circular shape with a generous 50mm diameter, making it a versatile choice for a wide range of optical applications.

The filter is constructed from N-BK7 Schott, a renowned optical glass known for its excellent transmittance and low auto-fluorescence. This material ensures high-fidelity light transmission, minimizing distortions and aberrations. The filter's thickness is a mere 2mm, contributing to its compact design and ease of integration into various optical systems.

The FND-50C02-92 is coated with Opt FND-92 on both the front and back surfaces. This reflective neutral density coating is designed to reduce the intensity of incident light without altering its color balance. The coating provides a broadband attenuation, ensuring consistent performance across the entire visible spectrum.

The filter's shape is that of a Thin Lens, which not only aids in its integration into optical systems but also minimizes unwanted optical effects such as ghosting and flaring. The filter is currently in stock and available for immediate purchase through the provided weblink.