SLB-10B-15NM 10.0 mm Dia. x -14.7 mm FL; Coated; Double-Concave Lens 400-700nm

The SLB-10B-15NM is a high-quality double-concave lens, designed and manufactured by OptoSigma. This lens, with a base shape of a circle, is specifically designed for use within the wavelength range of 400-700nm, making it suitable for a wide range of optical applications.

The lens has a diameter of 10.0 mm and a center thickness of 2.0 mm, ensuring a compact and efficient design. The edge thickness is 3.6 mm, providing robustness and durability. The effective focal length (EFL) of this lens is -14.7 mm, and the back focal length (BFL) is -15.3 mm, indicating a strong converging power.

The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and chemical resistance. The lens surface is coated with Opt M, a broadband anti-reflection coating that enhances transmission and reduces surface reflections, thereby improving overall system performance.

This lens is a spherical lens, which means it has a spherical surface with a constant radius of curvature. The first radius of curvature (R1) is -15.57 mm, and the second radius of curvature (R2) is 15.57 mm, indicating a biconcave lens. The inner and outer radii are both 0 mm, indicating a uniform curvature across the lens surface.