SLB-25-170N 25.0 mm Dia. x -170.0 mm FL; Plano-Concave Lens Uncoated

The SLB-25-170N is a Plano-Concave Lens with a diameter of 25.0 mm and a focal length of -170.0 mm, making it a negatively powered lens. This lens is sourced from OptoSigma, a renowned vendor in the optical industry, and is uncoated. The lens is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number.

The geometry of the lens includes a thickness edge of 3.0 mm and a thickness center of 2.0 mm. The inner and outer radii are both 0.0 mm, indicating a flat surface on one side and a curved surface on the other. The curvature of the lens is defined by a radius of 88.23 mm on the curved side. The back focal length (BFL) of the lens is -171.3 mm.

This lens is designed for use at a wavelength of 546.1 nm. It is important to note that the lens is uncoated, which means it does not have any anti-reflective coatings. This may result in unwanted reflections, especially when working with high-intensity light sources or when the lens is used at a large angle of incidence.