This is a Germanium Plano-Convex lens, sourced from Alkor Technologies, with a diameter of 50.8 mm and a focal length of 500 mm. The lens is uncoated, which means it does not have any additional layers to protect it or enhance its optical properties.
The lens is spherical in shape, with a planar (flat) surface on one side and a convex surface on the other. The thickness at the edge of the lens is 2.5 mm, while the thickness at the center is slightly more at 2.7 mm. The lens's inner and outer radii are both 0, indicating a symmetrical curvature.
The lens is made of Germanium burnett, a specific type of germanium that is often used in optical applications due to its high refractive index and transparency in the infrared region. The lens is designed to work with a wavelength of 10600 nm.
According to the vendor's website, this lens is in stock, making it readily available for immediate use. For more information, you can refer to the vendor's website, which is provided in the item data.