AND-25S-70 25 x 25 mm Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

The AND-25S-70 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 400-700nm range.

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 2 mm, ensuring durability and stability during use. The filter is unmounted, providing users with the flexibility to integrate it into their existing optical systems.

The filter's coating is a key feature, with both the front and back surfaces coated with OptoSigma's proprietary 'opt and-70' coating. This coating enhances the filter's performance, providing consistent and reliable neutral density across the specified wavelength range.

The filter's geometry is defined as a 'Thin Lens', suggesting that it has been designed to minimize optical aberrations and distortions. This is particularly beneficial in applications where high-resolution imaging or precise light control is required.