AND-20S-01 20 x 20 mm Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

OptoSigma's AND-20S-01 is a 20 x 20 mm Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This filter is unmounted, providing users with the flexibility to integrate it into their existing optical systems.

The filter is of the Absorptive Neutral Density type, which means it reduces the intensity of light without altering its color composition. This is achieved through the use of a special coating on both the front and back surfaces, labeled 'opt and-01'. This coating is designed to maintain a high level of transmittance while effectively reducing the light intensity.

The filter's geometry is rectangular, with dimensions of 20 x 20 mm, and a thickness of 2mm. This thin lens shape ensures minimal interference with the light path, making it suitable for a wide range of applications. The filter is made from UVFS Mal-1965 material, a type of optical glass known for its excellent optical properties and durability.

The filter's catalog number is AND-20S-01, and it can be found on the OptoSigma website, where it is currently in stock. This information, along with a direct weblink to the product page, is provided to assist users in quickly locating and purchasing this item.