FNM0313 12.5 mm Dia. Metallic Neutral Density Filter 546nm

The FNM0313 is a Neutral Density Filter with a diameter of 12.5 mm and a thickness of 2 mm, sourced from the reputable vendor Knight Optical. This filter is designed to reduce the intensity of all wavelengths of light equally, making it an ideal choice for applications where a uniform decrease in light is required.

The filter is made from N-BK7 Schott, a high-quality borosilicate glass known for its excellent optical properties. This material ensures high transmittance and low dispersion, making it suitable for a wide range of optical applications.

The FNM0313 features a coating on both the front and back surfaces, denoted as 'kni fnm03'. This coating is designed to enhance the filter's performance and durability, providing protection against environmental factors and ensuring consistent optical performance.

The filter's geometry is defined as a Thin Lens, which is a lens with a thickness much smaller than its diameter. This design ensures minimal optical distortion and maintains the integrity of the light path.

The filter is currently in stock and available for purchase on Knight Optical's website. For more information, you can visit the following link: https://www.knightoptical.com/stock/default/0-3-od-nd-filter-12-5mmdia-2mmthk.html