This is a Germanium Plano-Convex lens, sourced from Alkor Technologies, with a diameter of 25.4 mm. The lens is uncoated and features a spherical shape, designed for use in optical systems that operate at a wavelength of 10600 nm.
The lens has a thickness of 2 mm at the edge and 3 mm at the center, with an effective focal length (EFL) of 25.4 mm. The inner radius of the lens is 0, while the outer radius is not specified, indicating a plano surface.
The lens is available for purchase directly from Alkor Technologies' website, where it is currently listed as in stock. For more detailed information about this lens and its specifications, please refer to the vendor's website.