FNU0225 25 mm Dia. Metallic Neutral Density Filter 546nm

The FNU0225 is a 25 mm diameter Neutral Density Filter, sourced from Knight Optical, a leading vendor in the optical industry. This filter is designed with a base shape of a Circular Thin Lens, making it suitable for a wide range of optical applications.

The filter is made from UVFS MAL-1965, a material known for its durability and optical clarity. It has a thickness of 2 mm, providing sufficient structural integrity while minimizing optical distortion.

The FNU0225 features a Neutral Density coating on both the front and back surfaces, identified as KNI FNU02. This coating is designed to uniformly reduce the intensity of incident light, without altering its color composition. This makes the filter ideal for applications requiring light control, such as in photography, beam attenuation, or laser applications.

The filter's central wavelength is 546 nm, which is within the visible light spectrum. This wavelength corresponds to the greenish-yellow color in the spectrum, often associated with high-pressure sodium lamps. This specific wavelength selection can be beneficial in applications where selective filtering is required.

The FNU0225 is currently in stock and available for immediate purchase. For more information, you can visit the product page at https://www.knightoptical.com/stock/default/0-2-od-metallic-nd-filter-uv-grade-25mmdia.html.