This 561-6388 optical lens, sourced from EKSMA Optics, is a Spherical Lens of the Plano-Convex subtype. The lens has a base shape of Circular, with a diameter of 38.1 mm and a thickness edge of 2.5 mm. The effective focal length (EFL) of the lens is 190.5 mm, and it has an inner radius of 0 mm and an outer radius of 0 mm.
The lens is made of Zinc Selenide (ZnSe) material, specifically the ZnSe Marple-1964 variant. It is designed to work with a wavelength of 10600 nm. The lens features Anti-Reflective (AR) coating on both the front and back surfaces, specifically the EKS ZnSe AR 10600 coating.
The lens's geometry, material, and coating make it suitable for use in UV and IR optics, as indicated by its vendor's website link: https://eksmaoptics.com/optical-components/uv-and-ir-optics/zinc-selenide-znse-lenses/. The link also confirms that the lens is in stock, making it readily available for immediate use.