The 48-320 25.0mm Dia. x -250 FL; Uncoated; UV Plano-Concave Lens is a high-quality optical component sourced from Edmund Optics. This lens, with its spherical geometry, is designed for use in a wide range of optical applications.
The lens features a base shape of a circle, with a diameter of 25.0mm. The thickness at the edge of the lens is 3.15mm, while the thickness at the center is 2.5mm. The effective focal length (EFL) of this lens is -250mm, making it a plano-concave lens. The radius of curvature (R1) is -114.61mm, and the back focal length (BFL) is -251.71mm. The lens does not have any coating, as indicated by 'Uncoated' in its name.
The lens is made of fused silica, specifically identified as 'fused sil mal-1965' in the item data. This material is known for its excellent optical properties, making it suitable for use in UV applications. The lens is designed to operate at a wavelength of 587.6nm.