16-975 20mm Dia. N-SF5 Precision Aspheric Lens; EFL=20mm; NA=0.5 NIR-Plus 600-1050nm

The 16-975 is a high-precision aspheric lens, designed and manufactured by Edmund Optics. This lens is characterized by its 20mm diameter and a numerical aperture (NA) of 0.5, specifically designed for use within the near-infrared spectrum of 600-1050nm.

The lens is constructed from N-SF5 Schott, a high-refractive index glass that is well-suited for use in the infrared region. The aspheric design of the lens helps to minimize spherical aberration, a common issue in traditional spherical lenses, thereby improving the overall image quality.

The lens features an effective focal length (EFL) of 20mm, which is the distance from the lens's principal point to its focal point. This EFL makes the lens suitable for a wide range of applications, including imaging and beam shaping.

The lens is coated with Edmund Optics' NIR-Plus 600-1050nm coating, which is specifically designed to enhance the lens's performance within the near-infrared spectrum. This coating helps to reduce surface reflections, thereby improving the lens's transmission and overall efficiency.

The lens has a thickness of 7.23mm at the edge and 11.2mm at the center. The front and back surfaces of the lens are coated with the same NIR-Plus 600-1050nm coating, ensuring optimal performance from both sides.