The 45-700 is a 9.0mm diameter Plano-Concave lens with a focal length of -13.5, sourced from Edmund Optics. This uncoated lens is designed for use with UV light, specifically at a wavelength of 587.6nm. The lens's geometry includes a thickness of 3.64mm at the edge and 2mm at the center, with an inner radius of 0mm and an outer radius of 0mm. The base shape is circular, and the lens is made from fused silica material, identified as mal-1965. The lens's Sub Type is Spherical, and it is designed for use in spherical optical systems. The coating for this lens is listed as 'none', indicating that it is uncoated. The weblink provided is valid and indicates that the lens is currently in stock.