49-533 20.0mm Dia. x -50 FL; NIR I Coated; Plano-Concave Lens 600-1050nm

This is a 20.0mm diameter Plano-Concave Lens, offering a focal length of -50 and manufactured by the renowned optical vendor, Edmund Optics. The lens is sourced from the N-BK7 Schott material, a popular choice for its high refractive index and low dispersion properties, making it ideal for a wide range of optical applications.

The lens features a plano-concave geometry, characterized by its flat front surface and curved back surface. The back surface has a radius of curvature of -25.84mm, contributing to the lens's negative focal length. The lens's center thickness is 3.5mm, while the edge thickness measures at 5.21mm, providing structural integrity and resistance to deformation.

The lens is coated with the EDM NIR-I Standard Curve coating on both the front and back surfaces. This anti-reflection coating is specifically designed for the near-infrared (NIR) spectrum, spanning 600-1050nm, enhancing transmission and reducing surface reflections. The coating ensures optimal performance in NIR applications, such as thermal imaging, spectroscopy, and telecommunications.