The LF5048-E is a Spherical Lens with a Sub Type of Spherical Lens (Concave-Convex) and a Base Shape of Circular. This lens boasts a diameter of 25.4 mm and a thickness edge of 4.4 mm, with a thickness center of 4 mm. The Effective Focal Length (EFL) is -500mm, and the Back Focal Length (BFL) is -497.3mm. The lens is made of Calcium Fluoride (CaF2) with the Material ID "caf2 mal-1963".
This lens is designed to operate at a wavelength of 4000 nm. The front and back of the lens are coated with "tho ecaf2arc20005000", providing optimal performance for specific applications. The lens's shape is spherical, and it is sourced from the reputable vendor Thorlabs.
According to the vendor's website, the LF5048-E is currently in stock, ensuring quick delivery for your optical needs. The link to the product page on Thorlabs' website is provided for your convenience.