SLB-25B-80NM 25.0 mm Dia. x -79.7 mm FL; Coated; Double-Concave Lens 400-700nm

The SLB-25B-80NM is a high-quality double-concave lens, designed with a base shape of a circle and a diameter of 25.0 mm. This lens is sourced from the reputable vendor, OptoSigma, and is currently in stock. The lens features a significant thickness at the edge, measuring 4.0 mm, and a reduced thickness at the center, measuring 2.0 mm. The effective focal length (EFL) of this lens is -79.7 mm, making it suitable for a variety of optical applications.

The lens's first radius of curvature (R1) is -83.04 mm, while the second radius of curvature (R2) is 83.04 mm, indicating its double-concave nature. The back focal length (BFL) is -80.3 mm. The lens is made from the renowned material, n-bk7 schott, which is known for its excellent optical properties.

The SLB-25B-80NM is coated with an opt m coating on both the front and back surfaces, enhancing its performance in the wavelength range of 400-700nm. This coating ensures high transmission and low reflection, making it ideal for use in a wide range of applications, including but not limited to, imaging systems, beam shaping, and laser applications.