This is a Plano-Convex Lens, type of spherical lens, offered by EKSMA Optics. The lens has a circular base shape with a diameter of 76.2 mm and a thickness edge of 2.5 mm. The effective focal length (EFL) of this lens is 254 mm. The lens is made of Zinc Selenide (ZnSe) material, specifically the ZnSe Marple-1964 variant.
The lens is designed to operate at a wavelength of 10600nm. It comes with Anti-Reflective (AR) coating on both the front and back surfaces, specifically the EKS ZnSe AR 10600 coating. This coating is intended to reduce reflection and increase transmission of light through the lens.
The lens is currently in stock and more information about it can be found on the EKSMA Optics website. The link to the product page is provided in the item data.