SLB-10B-20PM 10.0 mm Dia. x 20.5 mm FL; Coated; Double-Convex Lens 400-700nm

The SLB-10B-20PM is a high-quality double-convex lens offered by OptoSigma, a leading vendor in the optical industry. This lens, with a diameter of 10.0 mm and a focal length of 20.5 mm, is designed for use in the visible light spectrum, specifically between 400-700nm.

The lens is made from n-bk7 schott, a popular material in the optical industry due to its excellent optical properties. The base shape of the lens is circular, and it features a spherical geometry. The center thickness of the lens is 3.2 mm, while the edge thickness is 2 mm. The back focal length (BFL) is 19.5 mm, and the effective focal length (EFL) is 20.5 mm.

The SLB-10B-20PM is coated with opt m on both the front and back surfaces, enhancing its performance in the specified wavelength range. This coating helps to reduce reflection and increase transmission, making the lens ideal for various applications.

Please note that the inner and outer radii of the lens are not specified in the provided data. However, the first radius of curvature (r1) is 20.76 mm, and the second radius of curvature (r2) is -20.76 mm, indicating a biconvex lens.