The SLB-25-170NIR2 is a Plano-Concave Spherical Lens, part of OptoSigma's extensive catalog of optical elements. This lens, with a diameter of 25.0 mm, is designed for use in the infrared spectrum, specifically between 750-1550nm.
The lens features a base shape of a circle, with a thickness at the edge of 3mm and a center thickness of 2mm. The effective focal length (EFL) is -170.0 mm, indicating a concave lens. The radius of curvature (R1) is -88.23 mm, and the back focal length (BFL) is -171.3 mm. The lens does not have an inner or outer radius.
The lens is made of n-bk7 schott, a popular material for optical lenses due to its excellent optical properties. The lens is coated with opt ir2 on both the front and back, a coating designed for use in the infrared spectrum.
This lens is currently in stock and available for purchase. For more information, please visit the vendor's website using the provided weblink.