This is a Ge-px-12.7-12.7 12.7 mm Dia. Germanium Plano-Convex Lens, sourced from Alkor Technologies. The lens is uncoated and features a spherical shape, with a diameter of 12.7 mm and a thickness that varies from 2 mm at the edge to 2.5 mm at the center. The effective focal length (EFL) of this lens is also 12.7 mm.
The lens is made of Germanium burnett, a material known for its excellent optical properties, particularly in the infrared region of the spectrum. This specific lens is designed to work with a wavelength of 10600 nm. The lens's base shape is circular, and it does not have any inner or outer radii, indicating a simple, straightforward design.
For more information about this lens, including its availability and pricing, you can refer to the vendor's website at http://www.alkor.net/germanium_lenses.html. The link has been verified and is currently in stock, ensuring that you can acquire this lens promptly if it meets your requirements.