SLB-50-80NIR2 50.0 mm Dia. x -80.0 mm FL; Coated; Plano-Concave Lens 750-1550nm

The SLB-50-80NIR2 is a Plano-Concave Spherical Lens, 50.0 mm in diameter with a focal length of -80.0 mm, specifically designed for use within the wavelength range of 750-1550nm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry.

The lens is fabricated from n-BK7 Schott, a popular material for optical components due to its excellent optical properties. The Plano-Concave geometry, characterized by a flat front surface and a curved back surface with a radius of curvature of -41.52mm, contributes to its unique optical properties.

The lens has a central thickness of 3mm and an edge thickness of 11.4mm, providing robustness and durability. The back focal length (BFL) is -82mm, slightly longer than the effective focal length (EFL), which is -80mm. The lens does not have any inner or outer radius, indicating a uniform curvature across the surface.

The lens is coated with Opt IR2 on both the front and back surfaces, enhancing its performance within the specified wavelength range. This coating reduces reflection and increases transmission, making the lens suitable for various applications, including but not limited to, imaging, beam shaping, and laser systems.