SLB-20-120N 20.0 mm Dia. x -120.0 mm FL; Plano-Concave Lens Uncoated

The SLB-20-120N is a Plano-Concave Lens with a 20.0 mm diameter and a focal length of -120.0 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 homogeneity.

The lens's geometry includes a thickness edge of 2.8 mm and a thickness center of 2 mm. The inner radius is 0 mm, and the outer radius is also 0 mm, indicating a flat surface on both sides of the lens. The back focal length (BFL) is -121.3 mm. The lens's shape is spherical, and it is designed to operate at a wavelength of 546.1 nm.

This lens is suitable for various applications, including imaging systems, beam shaping, and laser applications. Its uncoated surface allows for custom coatings based on specific application requirements. The lens's robustness, excellent optical quality, and versatility make it a valuable addition to any optical system.