FND-30C02-1 30 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

This is the FND-30C02-1, a 30 mm diameter, unmounted Neutral Density Filter from OptoSigma. It is designed for use in the visible light spectrum, specifically between 400 and 700 nanometers. The filter is made from N-BK7 Schott, a high-quality borosilicate glass known for its excellent optical properties.

The filter features a reflective coating on both the front and back surfaces, identified as 'opt fnd-1'. This coating is a neutral density type, designed to reduce the intensity of light without altering its color balance. The thickness of the filter is 2 millimeters, which is considered thin in the context of optical components, making it suitable for applications where space is a constraint.

The FND-30C02-1 is currently in stock and available for immediate purchase. For more information, you can refer to the product's webpage at https://www.optosigma.com/us_en/optics/filters/neutral-density-filters/reflective-neutral-density-filter-unmounted-visible-30mm-diameter-1i1-4-FND-30C02-1.html.