AND-25S-25 25 x 25 mm Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

The AND-25S-25 is a high-quality Neutral Density Filter, offered by the renowned optical components manufacturer, OptoSigma. This filter is designed to minimize the intensity of light passing through the optical path, without altering its color composition. The filter is unmounted, providing flexibility for integration into various optical systems.

The filter boasts a base shape of 25 x 25 mm, making it suitable for a wide range of applications. It is made from UVFS MAL-1965 optical glass, a material known for its excellent optical properties and durability. The filter's thickness is 2 mm, ensuring robustness and resistance to mechanical stress.

The AND-25S-25 filter features a coating on both the front and back surfaces, denoted as 'opt and-25'. This coating enhances the filter's performance by reducing reflections and increasing transmission, thereby improving the overall efficiency of the optical system.

The filter's wavelength is centered at 550 nm, falling within the visible light spectrum (400-700 nm). This makes it ideal for applications that require light attenuation within the visible range, such as photography, beam shaping, and laser applications.

In terms of geometry, the filter follows a Thin Lens shape, which is advantageous in reducing optical aberrations and improving image quality. The filter's catalog number is AND-25S-25, and it is currently in stock, according to the vendor's website.

In conclusion, the AND-25S-25 is a versatile and reliable Neutral Density Filter, offering excellent light control and high-quality optical performance. Its unmounted design, robust construction, and wide spectral range make it a valuable addition to any optical system.