AND-25S-30 25 x 25 mm Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

The AND-25S-30 is a high-quality Neutral Density Filter, offered by the renowned optical components manufacturer, OptoSigma. This filter is designed for use in the visible light spectrum, specifically absorbing light within the wavelength range of 400-700nm.

The filter is rectangular in shape, with dimensions of 25 x 25 mm, making it suitable for a wide range of optical applications. It boasts a thickness of 2mm, ensuring durability and stability during use. The filter is unmounted, providing users with the flexibility to integrate it into their existing optical systems.

The AND-25S-30 features a coating of 'opt and-30' on both the front and back surfaces. This coating enhances the filter's performance, providing consistent and reliable neutral density across the entire visible light spectrum. The coating also helps to reduce surface reflections, improving the overall transmission efficiency of the filter.

The filter's geometry is designed in a 'Thin Lens' shape, which is beneficial for applications where space is a constraint. This shape also helps to minimize optical aberrations, ensuring the highest quality of light transmission.