AND-40C-13 40 mm Dia. Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

OptoSigma's AND-40C-13 is a high-quality Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This filter is unmounted, offering flexibility for integration into various optical systems.

The filter boasts a circular shape with a diameter of 40mm, making it suitable for a wide range of applications. It has a thickness of 2mm, ensuring durability and stability within your optical setup. The filter's material ID is UVFS MAL-1965, providing a reliable reference for material properties and compatibility.

The front and back of the filter are coated with Opt AND-13, a specialized coating that enhances the filter's performance and longevity. This coating is designed to work seamlessly with the filter's material, ensuring optimal light absorption and minimal distortion.

The filter's geometry is shaped as a Thin Lens, which is beneficial for applications requiring minimal optical path deviation. This feature, combined with its Neutral Density properties, makes the AND-40C-13 an excellent choice for various optical applications.

According to the provided item data, the filter's wavelength is 550nm. This suggests that the filter is designed to operate effectively in the green light spectrum. However, its broad spectral range (400-700nm) allows it to be used across a wide range of visible light applications.