SLB-25.4-70NM 25.4 mm Dia. x -70.0 mm FL; Coated; Plano-Concave Lens 400-700nm

The SLB-25.4-70NM is a Plano-Concave Spherical Lens, a high-quality optical component sourced from OptoSigma. This lens boasts a diameter of 25.4 mm and a focal length of -70.0 mm, making it suitable for a wide range of optical applications.

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 planoconcave geometry. The center thickness of the lens is 2 mm, while the edge thickness is 4.3 mm, providing a robust structure for various applications.

The SLB-25.4-70NM is coated with opt m on both the front and back surfaces, enhancing its performance in the 400-700nm wavelength range. This coating ensures high transmission and low reflection, making it an ideal choice for applications that require high-quality imaging or light transmission.

The lens has an effective focal length (EFL) of -70.0 mm and a back focal length (BFL) of -71.3 mm. The inner and outer radii are 0 mm, indicating a uniform curvature. The radius of curvature (R1) is -36.33 mm.