MFND-52-40 52 mm Dia. Mounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

The MFND-52-40 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 leading vendor in the optical industry, and is available for purchase on their official website. The catalog number for this product is MFND-52-40.

This filter is mounted and has a diameter of 52mm, making it suitable for use in a variety of optical systems. The thickness of the filter is 2mm, which is designed to provide stability and durability. The filter is made from N-BK7, a high-quality glass material produced by Schott, ensuring excellent optical performance.

The filter features a Reflective Neutral Density coating on both the front and back surfaces. This coating, identified as 'opt fnd-40', is designed to reduce the intensity of light without altering its color balance. This makes it an ideal choice for applications where light intensity needs to be controlled, such as in photography, cinematography, and scientific research.

The geometry of the filter is that of a Thin Lens, which is designed to minimize optical aberrations and distortions. This ensures that the filter provides clear, high-quality optical performance.