This is a 76.2 mm diameter Germanium Plano-Convex lens, sourced from Alkor Technologies. The lens is uncoated and features an effective focal length (EFL) of 254mm. The lens's geometry includes a 3mm thickness at the edge and a 4mm thickness at the center.
The lens's inner radius is 0, while the outer radius is not specified, indicating a potentially flat outer surface. The lens is made of Germanium burnett material and is designed to work with a wavelength of 10600nm.
This lens is a spherical type, and its sub-type is a Plano-Convex lens, which means one side is flat while the other side is curved. The curvature of the lens is defined by a radius of 748.2mm on the curved side.
According to the vendor's website, this item is currently in stock, making it readily available for immediate use. For more detailed information, you can refer to the vendor's website through the provided weblink.