FND-20C02-92 20 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

OptoSigma's FND-20C02-92 is a high-quality Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This unmounted filter, with a 20mm diameter and a thickness of 2mm, is made from N-BK7 Schott, a renowned optical glass known for its excellent transmittance and low auto-fluorescence.

The filter features a reflective Neutral Density coating on both the front and back surfaces, denoted as 'opt fnd-92'. This coating is designed to reduce the intensity of light passing through the filter without altering its color balance, making it an ideal choice for applications requiring precise light control, such as photography, beam shaping, or laser applications.

The filter's thin lens shape ensures minimal distortion and maintains the integrity of the light path. The unmounted design offers flexibility, allowing users to integrate it into their existing optical systems or mount it using their preferred method.

For more information, including pricing and availability, please refer to the vendor's website using the provided weblink.