47-208 25 mm Dia. UV-VIS Metallic Based Neutral Density Filter; OD 1.3 250-700nm

The 47-208 is a Neutral Density Filter with a 25 mm diameter, sourced from the reputable optical vendor, Edmund Optics. This filter is designed for use in the UV-VIS spectrum, specifically catering to wavelengths between 250 and 700nm.

The filter boasts an Optical Density (OD) of 1.3, which translates to approximately a 20% transmission rate. This makes it an ideal choice for applications requiring a significant reduction in light intensity, without altering the color balance of the incident light.

The filter is constructed with a Metallic Based Neutral Density material, ensuring consistent attenuation across the entire UV-VIS spectrum. This is crucial in applications where color accuracy is paramount, such as in imaging or spectroscopy.

The geometry of the filter includes a diameter of 25mm and a thickness of 3mm, making it compatible with most optical systems. The front and back surfaces of the filter are coated with EDM 48-621, a coating type known for its durability and resistance to environmental factors.

The filter's shape is classified as a Thin Lens, which is beneficial in applications where minimal optical path deviation is required. This filter is currently in stock and available for purchase through the Edmund Optics website.