FNG4013 12.5 mm Dia. Absorptive Glass Neutral Density Filter 546nm

The FNG4013 is a high-quality Neutral Density Filter, boasting a 12.5 mm diameter and a thickness of 3.9 mm. This filter is sourced from Knight Optical, a renowned vendor known for their extensive catalog of optical elements. The filter is designed to absorb light evenly across the spectrum, making it an ideal choice for a wide range of applications.

The filter's material ID is UVFS MAL-1965, indicating its specific composition and properties. It features a wavelength of 546nm, which is typically used in applications such as colorimetry and fluorescence measurements. The filter's geometry, including its diameter and thickness, is designed to provide optimal performance while minimizing optical aberrations.

The FNG4013 is coated with KNI FNG40 on both the front and back surfaces. This coating enhances the filter's performance and durability, providing excellent resistance to scratches and other forms of damage. The filter's shape is thin lens, further contributing to its high optical quality.

The filter is currently in stock and available for purchase on Knight Optical's website. With its superior optical performance and robust design, the FNG4013 is an excellent choice for users seeking a reliable and high-performance Neutral Density Filter.