SLB-15-20NM 15.0 mm Dia. x -20.0 mm FL; Coated; Plano-Concave Lens 400-700nm

The SLB-15-20NM is a Plano-Concave Spherical Lens, 15.0 mm in diameter, with a focal length of -20.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. It is designed for use within the wavelength range of 400-700nm, making it suitable for a wide range of optical applications.

The lens is constructed from n-bk7 Schott, a popular optical glass due to its excellent optical properties and versatility. The base shape of the lens is circular, and it features a planar surface on one side and a concave surface on the other. The edge thickness of the lens is 5.2 mm, while the center thickness is 2 mm.

The SLB-15-20NM is coated with Opt M on both the front and back surfaces. This coating enhances the lens's performance by reducing reflection and increasing transmission, thereby improving the overall efficiency and quality of the optical system.

The lens's geometry includes an inner radius of 0 mm and an outer radius of 0 mm. The back focal length (BFL) is -21.3 mm, and the effective focal length (EFL) is -20 mm. This lens is currently in stock and available for immediate purchase.