MFND-52-20 52 mm Dia. Mounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

The MFND-52-20 is a Neutral Density Filter, specifically designed for use in the visible light spectrum, with a wavelength of 550nm. This filter is manufactured by OptoSigma, a renowned vendor in the optical industry, and is available for purchase on their official website. The filter is currently in stock, as indicated by its weblink status.

The filter is mounted and has a diameter of 52mm, making it suitable for use with a variety of optical systems. It features a thickness of 2mm, providing a balance between durability and precision. The filter is made from N-BK7, a high-quality glass material produced by Schott, ensuring excellent optical performance.

The filter's coating is another notable feature. Both the front and back surfaces of the filter are coated with Opt FND-20, a reflective neutral density coating. This coating is designed to reduce the intensity of light without altering its color balance, making it ideal for applications that require precise control over light intensity.

The shape of the filter is thin lens, which is a design that minimizes optical aberrations and distortions. This ensures that the filter provides clear, undistorted images, making it suitable for a wide range of optical applications.