AND-40C-40 40 mm Dia. Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

OptoSigma's AND-40C-40 is a high-quality Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This unmounted filter, with a diameter of 40mm and a thickness of 2mm, is a circular filter made of optical glass, offering excellent optical clarity and durability.

The filter is coated with an Absorptive Neutral Density coating on both the front and back surfaces, identified as 'opt and-40'. This coating is designed to reduce the intensity of light without altering its color balance, making it an ideal choice for a wide range of applications, including photography, cinematography, and scientific research.

The filter's geometry, with a diameter of 40mm, is designed to fit into most standard optical systems. The thin lens shape ensures minimal distortion and maintains the integrity of the optical path. The filter is identified by the Material ID 'uvfs mal- 1965', indicating its specific composition and properties.

The filter is currently in stock and available for purchase through the vendor's website. The catalog number AND-40C-40 can be used to locate the product on the website, where more detailed specifications and purchasing information can be found.